32 



Genus Argas 



being somewhat more posterior. Spiracles crescentic, less than the 

 width of the anal ring, which is oval. Hairs rather more abundant than 

 on the dorsum. Capitulum (Figs. 42, 43) : with very thick base ; palps 

 tapering, the first two articles (especially art. 2) long, the 3rd and 

 4th short; four strong hairs on the outer surface of 1st article. 

 Chelicerae: see digit, Fig. 44; hypostome (Fig. 42) long, narrow, 

 lanceolate, bearing two long hairs at its base; dentition 2 | 2, 14 — 15 teeth 

 per file, the inner teeth widely separated. Legs yellowish, relatively 



Fig. 44. Fig. 45. 



Fig. 44. Digit, x 210. Nn. 1907, fig. 13. 

 Fig. 45. Tarsi I and IV, x 14. Nn. 1907, fig. 14. 



Fig. 46. Fig. 47. 



Argas hrumpti. 



Fig. 46. Detail of dorsal integument, x 11. 

 Fig. 47. Marginal integument, x 25. 

 (Neumann, 1907, figs. 11 and 10.) 



