36 



Genus Argas 



indented at the tip, with small inconspicuous teeth, apparently all 

 marginal. Palps : article 1 comparatively large and massive, the other 

 articles very small and narrow. Legs: coxae sub-conical, coxa I 

 separated from coxa II ; coxae II, III and IV contiguous ; tarsi abruptly 

 tapering, almost humped. 



The descriptions of the nymph and larva given below are condensed 

 from Neumann (1896, pp. 22-24). 







Fig. 49. Argas vetpertilionis. One of two curious grooved organs lying posterior to 

 anus as indicated in key-figure above and highly magnified below. Present in adults 

 and nymphs. Drawn from large nymph (opaque object) and only indicated by a 

 line in Fig. 48 of ? . Original, N. and W. 



Fig. 50. Fig. 51. 



Argas vespertilionis. 



Fig. 50. Nymph, ventral aspect, x28 (Nn. 1896, fig. 22). 

 Fig. 51. Nymph, ventral aspect, x 13 (Wheler, 1906, fig. 8). 

 We regard these as 1st and 2nd stage nymphs. 



