Morphological Notes. 



35 



more or less ovate except in Stebbi iigella (fig. 60), where it has a 

 trapezoid form. 



The f/enu is always short and not dilated. 



The tibia is tolerably long, except in the first two pairs of peraso- 

 poda; in the third and fourth pairs in G lossocephal us, and in the third 

 and three following in Xiphocephalus it is much elongated. In the 

 female of this last genus it is sometimes, and I think periodically, enor- 

 mously inflated owing to the strong development of the glands within it. 

 In the former genus it is much dilated, resembling that joint in Phor- 

 corhapliis and Lycceopsis. The tibia is often provided with hairs or 



FUj. 60. Stebhingella Théeli. Fig. 61. TiiUhergelln ciispidnta. Fig. 63. Streetsia carinata. 



spines along the hind margin — in the third and and fourth pairs — 

 or on the front margin — in the fifth and sixth. 



The carpus. The development of the carpus 

 in the first and second pairs has been spoken of above 

 (p. 31 — 33). In the third and fourth pairs the carpus 

 is never dilated, as it is for instance in the genera 

 Parathemisto and Euthemisto; it is often spiniferous or 

 serrated, and in Xiphocephalus sometimes inflated, 

 but not in the same degree as the tibia. In Glosso- 

 cephalus it is dilated as well as the tibia. The 

 carpus of the fifth and sixth pairs is usually serrated or set with spines; 

 in Xiphocephalus it carries a series of ovate discs or plates armed 





W 



Fiq. 63 Fig. 64. 

 JUphocepluilun Whitei. 



