of specimens. Infestations of R. e. evertsi are similar to those of Equatoria but heavier and more widely spread than those of Bahr El Ghazal. H. truncatum is represented by only a single collection from Makier. SHEEP and GOATS have furnished specimens of A. lepidum, R. e. evertsi, R. s. sanguineus, and R. s. simus. DARFUR PROVINCE* Northward from the Bahr El Arab (River) that separates Darfur from Bahr El Ghazal Province, the landscape gradually changes from tall to short grasslands with fewer and fewer trees and thence to desert scrub and extreme desert conditions. Few big game animals exist across the Bahr El Arab and those that do are confined to the southern periphery of Darfur. Camels make their first appearance here and horses and donkeys are considerably more common than here tofore. Cattle and sheep abound. Volcanic, fertile, terraced Jebel Marra, with an altitude of almost 10,000 feet, is unexplored for ticks. Differences in the tick faunae of plains, hills, and mountains, and various kinds of grasslands remain to be investigated. MAMMALIA A FOX was infested by R. s. simus and another (Vulpes pallida) by R. s. sanguineus. DOMESTIC FOWLS A. persicus has been found at Fasher. *Most data for Darfur are from material collected by Sudan Veterinary Service personnel from domestic animals in six areas in the central part of the Province during the dry season. Scattered records in Sudan Government collections have also been obtained. DOMESTIC MAMMALS CAMELS, common in the north, graze down to the southern grass lands in the dry season but not to the Bahr El Arab toich. These animals transport goods throughout northern and central Sudan. They are infested chiefly by H. rufipes, possibly the most common tick of Darfur, and frequently by smaller numbers of H. dromedarii, H. impeltatum, H. impressum, and H. truncatum. O. savignyi also occurs and R. s. simus is present in a single collection. Few specimens of H. dromedarii from camels are included but most collections from Darfur cattle include several specimens of this tick. DOMESTIC RABBITS are parasitized by R. s. sanguineus. DOGS carry R. s. sanguineus and a single lot of H. 1. leachii has been obtained. HORSES, DONKEYS, and MULES are common and of good breeds. CATTLE and goats and sheep are numerous in Darfur. It is said that sheep are more common and important than goats here. Cattle migrate over a wide area, feeding on the Bahr El Arab toich during the dry season and grazing up to 13°N. during the rains. Herds in each of the areas represented are most heavily par asitized by H. rufipes, the total number of specimens of which equal those of all other species. Also common but fewer in num bers are H. dromedarii, H. truncatum, H. impressum, and H. impel tatum. A few specimens of A. lepidum, A. variegatum, B. decola ratus and R. s. sanguineus are also present. GOATS and SHEEP include R. e. evertsi in all collections but this tick has not been found on other Darfur hosts. Less numerous but frequent are R. s. sanguineus, H. rufipes, and H. truncatum. Single collections contain H. dromedarii from goats and B. decolo ratus from sheep. KORDOFAN PROVINCE* The very few available data from Kordofan are divided between collections from El Obeid, in the short grass scattered acacia region, and from various localities in the southwestern Nuba Mountain area. The Nuba Mountains, which reach an altitude of some 5000 feet, with permanent water supplies in the mountains and nearby plains, influence the area sufficiently to allow the survival of such tropical ticks as A. variegatum and R. s. simus. The gradual gradation of the plains from acacia tall grass forest to desert scrub in the north is similar to that of Darfur. REPTILIA A. brumpti infests the LIZARD Agama colonorum in the Nuba Mountains; A. exornatum has been taken from Varanus e. exanthe maticus at Khuwei, and A. nuttalli is known from a LAND TORTOISE at Talodi. AVES GUINEA FOWL examined for A. brumpti were free of this tick (page 84). A BUSTARD in the Kōalib Hills provided R. s. sangui neus. MAMMALIA The presence of A. brumpti in the Nuba Mountains infers parasitism of small mammals. R. s. sanguineus has been found on HEDGEHOGS at Heiban, and Delami (numerous in both localities), on a HARE at Delami, on a FOX in the Koalib Hills, and on a KUDU on Jebel Tabuli. DOMESTIC FOWLS A. persicus occurs at Delami. *Kordofan data were obtained largely by Mr. C. Karrar of the Sudan Veterinary Service. The few wild animal records are from Sudan Government and the HH collections. DOMESTIC MAMMALS CAMELS bear H. dromedarii, H. excavatum, and H. impressum, and 0. savignyi also feeds on them. PIGS at Tabanga are infested by R. s. sanguineus and R. s. simus. HORSES provide H. excavatum at El Obeid and R. s. simus at Talodi. MULES at Talodi yield R. e. evertsi. CATTLE populations and movements are comparable to those of Darfur. Herds at El Obeid and northwards are infested by B. decoloratus, H. dromedarii, H. excavatum, H. marginatum, H. rufipes, and R. s. sanguineus. B. decoloratus is probably chiefly transported this far north. In the south herds are parasitized by A. variegatum, B. annulatus, B. decoloratus, H. impressum, H. rufipes, H. truncatum, and R. s. simus. A Tew B. annulatus and H. detritum have been taken from Kordofan cattle at Quarantine Stations. SHEEP and GOATS have provided specimens of H. excavatum from El Obeid and of H. dromedarii, R. e. evertsi, R. s. sangui and R. s. simus from the west and south. BLUE NILE PROVINCE* The chief tick species and a few of the more uncommon ones are known from this Province but collections have been sparse, scattered, and uneven. Careful surveying should show differences between tick faunae in the sparse grass semidesert north of Wad Medani, the acacia short grass scrub southwards that becomes *Most Blue Nile data were supplied by Sudan Government veterina rians and by the writer's collections from Wad Medani. Specimens from wild animals are from Sudan Government collections, Mr. D. J. Lewis, and Museum of Comparative Zoology. acacia tall grass forest south of Singa, and the heavily cultivated, irrigated fields of the Gezira Scheme. REPTILIA Infestation of LIZARDS by A. brumpti, specimens of which have been secured at Gebelein and in Blue Nile districts", appears likely. A. exornatum has been taken from monitor lizards at Singa and Hassa Heissa. AVES A male and two female R. s. sanguineus parasitized a "large VULTURE at Wad Medani. MAMMALIA A. brumpti is assumed to infest a variety of small mammals in this Province but definite records are lacking. HEDGEHOGS at Hodft and Hosh provided several pairs of R. s. sanguineus. A CHEETAH in the Sennar area has been reported to be in fested by A. lepidum and specimens of H. 1. leachii were taken from a CARACAL. At Wad Medani, eight H. Teachii muhs ami and several R. s. sanguineus occurred on a MONGOOSE. GROUND SQUIRRELS at Roseires parasitized by H. houyi have been reported. MAN A male A. lepidum was taken at Wad Medani feeding between the toes of a man. DOMESTIC FOWLS A. persicus is present in several localities. |