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Non-Sudanese species of Hyalomma 504, 



Brief key to all presently recognized species 504 



Hyalomma aegyptium 51^ 



Hyalomma albiparinatiim 5X8 



Hyalomma hussalni and remarks on the 



subgenvis Hyalommina 520 



Hyalomma schulzei . 525 



Hyalomma turanicum 528 



Hyalomma ?species. 53^^ 



Ixodes 535 



Introdiiction 535 



Key to Sudan species of Ixodes 536 



Ixodes cavipalpus 5^ 



Ixodes nairobiensis 54.6 



Ixodes rasus ?sub3pecies 55O 



Ixodes schillingsi 558 



Ixodes simplex simplex 563 



Ixodes vespertilionis . 568 



Margaropus cyji^ 



Introduction 57/^^ 



Key to genus 57^ 



Margaropus reidi sp. nov 577 



Rhipicepnalus . .' 583 



Introduction 583 



Key to Sudan species of Rhipicephalus 586 



Rhipicephalus appendiculatus 6OO 



Rhipicephalus arnoldi 617 



Rhipicephalus bequaerti 620 



fehipicephalus compositus 623 



Rhipicephalus cuspidatus 631 



Rhipicephalus ? dlstinctus 636 



Rhipicephalus evertsi evertsi 6A? 



Rhipicephalus kochi . ♦ 655 



Rhipicephalus longicoxatus 661 



Rhipicephalus long us 665 



Rhipicephalus muhlensi 670 



Rhipicephalus pravus 674 



Rhipicephalus saji'^iuneus sanguineus 686 



Rhipicephalus simpsoni 726 



Rhipicephalus simus simus 730 



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