125 



very different; the anterior claw is distinctly curved terminally and bears a mode- 

 rately small ventral tooth in the distal half, while the posterior one is long, slender, 

 only slightly curved, and with the tip distinctly curved, but without any tooth. 

 A similar structure is found in the claws of Ch. siiperbus n. sp., but the posterior 

 claw of the tarsi in the first pair of legs in the male is swollen near the middle 

 and with a backwards directed tooth or eminence; Ch. Mortensenii n. sp. show in 

 the structures of the claws of the hindmost pair of legs no difTerence from the 

 previously mentioned (PI. Ill, fig. 1 i, c), but in the female the claws of the first pair 

 of legs appear bifurcate on account of the big teeth, while in the male the anterior 

 claw shows the described structure (PI. III. fig. 1 h, ci) and the posterior differs only 

 by the presence of an indistinct anterior tooth (ce). Ch. Socotrensis With shows 

 again an other modification, for the anterior claw of the first pair of legs has in 

 the female a foremost big tooth in contrast to the posterior claw, which bears a 

 long ventral tooth (cf. 21. pi. VII, fig. 4 h), and of the corresponding claws in the 

 male the anterior one is fairly slender and scarcely curved without a tooth, while 

 the posterior claw is much more slender, distally curved and provided with an 

 insignificant anterior tooth. This structure leads directly to that found in Ch. 

 graniilatus C. K.; the claws of the fourth pair of legs bear in this species small 

 anterior teeth, while those of the first pair of legs bear in the female long and 

 ventral teeth and in the male show a most abnormal structure; the anterior claw 

 of this is rather clumsy and distinctly curved without any distinct tooth (PI. Ill, 

 fig. 4a, ci), while the posterior consists of a basal and a distal portion, almost 

 vertical on each other, and is distinctly and suddenly widened out, where the two 

 portions meet; it is here provided with a distinct anterior, almost dorsal and partly 

 upwards directed tooth and prolonged into the very slender, distinctly pointed and 

 forwards directed tip (ce). The claws of the fourth pair of legs are toothless in 

 Ch. hiinpropsalis L. K. as well as in a bigger species nearly related to it from Spain 

 and so are the claws of the first pair of legs in the female of both these species; 

 the anterior claw of this pair is in the male of the latter species completely tooth- 

 less, while it in the former shows traces of a ventral tooth (figs. 5 a — 6 d, ci); the 

 posterior claw is in both species more slender and much better curved and 

 pointed than the anterior, and provided with a well pointed, but rather small tooth 

 beyond the middle anteriorly (ce). Ch. lampropsalis L. K. is besides remarkable by 

 the dorsal terminal conical projection of the tarsus of the first pair in the male 

 as well as by the abnormal shape of the posterior claw in a single specimen (c?), 

 having the anterior tooth projecting beyond dorsal surface of claw and directed 

 upwards (fig. 5a). The claws of Ch. sculphiratus Lewis do not bear any teeth, and 

 in Ch. Borneonensis Eli. they are according to Ellingsen also wanting (18. p. 206). 



IV. Terminal Lateral Tarsal Hair. 



Croneberg has in one of his figures (45. taf. X, fig. 13) representing the fourth 

 pair of legs in Ch. cimicoides F. drawn a strongly curved hair, placed laterally 



