28 



Genus Argas 



small (275-300 /j. 1.) ; digit (see Fig. 34) ; hypostome (Fig. 35) tapering 

 and slightly rounded at the tip ; two long post-hypostomal hairs on the 

 basis capituli. Females attain 8x5 mm., and the males are only slightly 

 smaller. 



Fig. 34. Fig. 35. 



Argas hermanni. 



Fig. 34. Left digit, x 225 (after Nn. 1896, fig. 12, modified). 

 Fig. 35. Hypostome, x 135 (Nn. 1896, fig. 13). 



Nymphs show great variation in size, ranging from 1*5 x 1 mm. up 

 to the size of the male. 



Neumann identified a tick collected by Raffray (E. Simon's Coll.) 

 in N. Abyssinia as belonging to this species on collating it with the 

 numerous specimens, of unknown origin, in the Paris Museum. 

 Subsequently, three specimens were brought from Egypt by Klunzinger 

 (Neumann, 1901, p. 253). Neumann separates this species from rejlexus 

 chiefly on account of " the fineness of the texture of its integument, 

 and the minute size and details of its capitulum." We regard it as 

 a doubtful species. 



ARGAS CUCUMERINUS Neumann, 1901. 



Lit. : Neumann, 1901, p. 254. 



Male : Body flat, long oval, 10x5 mm., almost as broad in front as 

 behind. Integument rather finely wrinkled. Margin striate, rather 

 narrow. Venter: anus almost circular, central, well behind the spiracles, 

 which are less than the anal width. Capitulum small and anterior ; 

 hypostome 2 | 2. Legs long ; coxa I slightly separated from coxa II ; 



