Non Sudanese species of Hyalomma.

Brief key to all presently recognized species..

Hyalomma aegyptium.

Hyalomma albiparmatum..

Hyalomma hussaini and remarks on the

Key to Sudan species of Ixodes.

Ixodes nairobiensis.

Ixodes rasus ?subspecies.

Ixodes schillingsi..

Ixodes simplex simplex.

Ixodes vespertilionis.

...

Margaropus reidi sp. nov........

Key to Sudan species of Rhipicephalus.

Rhipicephalus appendiculatus.

Rhipicephalus arnoldi.

Rhipicephalus bequaerti..

620

Rhipicephalus compositus.

.623

Rhipicephalus cuspidatus

..631

Rhipicephalus ?distinctus.

..636

Rhipicephalus evertsi evertsi

642

..655

Rhipicephalus longicoxatus.

..661

Argas reflexus, A. brumpti

..863

Ornithodoros annulatus, 0. capensis, 0. foleyi.

Ornithodoros lahorensis, 0. moubata.

Ornithodoros savignyi, 0. tholozani

..867

Amblyomma cohaerens, A. lepidum, A. marmoreum (group)867

Amblyomma nuttalli, A. pomposum, A. rhinocerotis.....868

Amblyomma tholloni, A. variegatum.

..868

Haemaphysalis leachii leachii, H. leachii muhsami....871

Hyalomma detritum and H. scupense

..871

Hyalomma dromedarii

..876

Rhipicephalus pravus, R. s. sanguineus

Rhipicephalus simpsoni

896

899

906

908

908

Rhipicephalus e. evertsi, R. longus, R. mühlensi......909

Rhipicephalus s. simus, R. s. senegalensis.

Rhipicephalus supertritus, R. tricuspis.

BIBLIOGRAPHY...

MAPS AND ILLUSTRATIONS

PLATE FIGURES

I

SUBJECT

Subdivisions of Ethiopian Faunal Region......
Political Divisions of Africa....

PAGE

24

2228

The Sudan. Principal Collecting Sites....... 25
Ixodidae. Key Morphological Characters...... 38

ARGASIDAE

Key Morphological Characters (0. savignyi 50
Key Morphological Characters (0. savignyi).. 51

A. (Argas) persicus and A. (Argas) reflexus.. 58
A. (Ogadenus) brumpti.

57

81

A. (Chiropterargas) boueti.

90

Sagittal Views, Unengorged and Engorging...158 Capitulum. Vertical Section...

...163

A. cohaerens

..210

A. lepidum.

.216

A. marmoreum (group).

..224

A. nuttal

..233

A. pomposum...

..240

A. rhinocerotis.

..248

A. tholloni...

.253

A. variegatum.

.259

APONOMMA

A. exornatum.
A. Tatum.

...281 .287

...297

...305

.317

.318

.328

.332