Tlielyphonidee in the British Museum. 127 



than a lateral eye ; flagellum bearing short setse. The poste- 

 rior sterna bearing laterally a few low granules, their median 

 portion sparsely punctured. 



The genital operculum (first sternite) marked with a very 

 deep transversely oval impression in its anterior half, upon 

 each side of which, that is posteriorly and laterally, there is a 

 groove which, rising at a point on a level with the middle of 

 the lateral side of the depression above mentioned, is directed 

 obliquely inwards and backwards, but falls considerably short 

 of the posterior border, which is distinctly emarginate on each 

 side of the middle line, the external angle of each emargina- 

 tion marking the place where a horny process projects 

 upwards on each side of a median membranous portion of the 

 second ; the second mesially very narrow, with its posterior 

 border straight ; third also with its posterior border straight. 

 Chelce rather short ; the coxa minutely and closely punc- 

 tured and also coarsely and sparsely ; the anterior processes 

 without secondary teeth, and diverging from each other at an 

 angle of about 50°. Trochanter (third segment) sharply 

 granular in front, its inferior edge armed with 2 teeth, its 

 upper edge with 4 (1 large angular, 2 small lateral, and 1 

 large anterior, the latter in one case bearing a minute external 

 basal spinule) ; the upper surface roughened with small smooth 

 crescentic elevations, which are situated behind setiferous 

 pores. The /Bm«<r provided in front above with a small tubercle, 

 below with a sharp spine, ornamented above, below, and 

 externally with crescentic impressions, passing into squami- 

 form granules. Tihia somewhat coarsely punctured; its process 

 stout, pointed apically, and almost as long as the terminal 

 digital segment; its anterior border convex and serrate, its 

 posterior border very lightly concave and armed with 1 

 prominent spine (rarely 2) behind the apex. Tarsal segment 

 coarsely punctured, armed below with a single spine; its 

 apophysis serrate along both its margins, the serrations on its 

 anterior or inner margin continued from the corresponding- 

 border of the segment ; digit with evenly arched external and 

 internal edge, the latter longitudinally bisulcate. 



Legs with femora ornamented in front with squamiform 

 granules, behind with large punctures. Patellce and tibice 

 similarly but much more finely ornamented ; the tibia (fifth 

 segment) armed below with a single spine at its distal end, 

 the segment following it furnished distally on each side with 

 a single spine; the/ee^ (terminal three segments) armed below 

 with two parallel series of stout blunt spines, of which the 

 distal two on each segment are the longest. Tarsus of first 

 leg with segments 2 to 8 gradually decreasing in length, the 



