the legs are a deep liver-red. The female scutum is lightly punc- 

 tate, largely pale in color with two submedian longitudinal blaick 

 stripes and a pair of vertical black stripes near the posterior 

 margin. The dorsal surface of the female posterior of the scutum 

 is dull crimson with two large nearly circxilar, slightly elevated 

 orange spots near the lateral margin. The apex and lateral mar- 

 gin of the peilpi are dull crimson. The last tarsal segment and 

 ventral surfaces of the legs are colored as in the male. This all 

 but extinct beast should not be difficult to recognize. 



Another species, D, niveus Nevimann, 1897, parasitizes wild 

 boars in Tunisia, Algeria, and Spanish Morocco (Senevet, Colas- 

 Belcour, and Gil Collado 1933), and various other animals in Eu- 

 rope and Asia. 



It Is difficult to determine what '"D, reticvilatus Neumann," 

 listed by Stella (l938A,1939A,19i;0) from-Ethiopia and by Niro 

 (1935) from Somaliland, actually is, D, reticulatus , which does 

 not appear to be a synonym of D, marginatus Sulz., 1776, as stated 

 by Schvilze (1933C), inhabits Europe and Asia, If its range does 

 extend into the Ethiopian mountains, it wo\ild represent a unique 

 ixodid distributional pattern, but conceivable on the basis of 

 geographic distribution of other invertebrates. 



Although it has not been our policy to discuss non-SManese 

 species, the above remarks and a few additional taxonomic notes 

 are inserted inasmuch as no review of the genus Dermacentor in 

 Africa is available, Extra-Sudan species have not been demons- 

 trated to be of medical importance and will not be Included in 

 subsequent volumes of this undertaking. 



In varioTis papers on Dermacentor , Schvilze has divided the 

 genus into several genera that show intenrelationships within a 

 closely circumscribed group and can, by contemporary concepts, 

 be considered at most only as subgenera. These are of only slight 

 interest in Africa, especially as the moot subject of subgenera 

 will be further revised in futiure studies, D, circumguttatils was 

 placed in the subgenus Puncticentor , which was subsequently syno- 

 nymized (Zumpt 1951) under the subgenus Amblyo center , in which D, 

 rhinocerinus had been placed. The usefulness of the latter cate- 

 gory is questionable in the absence of study of the entire genus. 

 These same remarks are possibly pertinent to the subgenus Cosmiomma , 

 originally proposed as a £\ill genus embracing only D. hippopotamensis , 



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