62 T. V. HODGSON. 



The cephalosome is of moderate size, exclusive of the eye-stalks. It is about 

 one-third the greatest diameter of the mesosome ; it is rounded anteriorly with a 

 short stump-like rostrum in the middle line. The eye-stalks arise from the postero- 

 lateral angles, but they can be hardly called slender, they extend to the margin of the 

 epimera of the first segment of the mesosome. The eyes are not very strongly 

 developed. 



Of the mesosome the first four segments are separated by a distinct but short 

 " waist" from the three posterior pair, this is more prominent in the female than in 

 the male ; the female also is proportionately broader. 



The first segment is curved slightly to receive the cephalosome, and the broad 

 truncated epimera are directed forwards, the three succeeding segments are subequal 

 in length. The second has the anterior margin of its epimera extended forwards, on 

 the third they are not so extended, and on the fourth they are smaller and rounded. 

 The three posterior segments are much shorter, subequal in length and increase in 

 curvature as they are reduced in diameter. Of these the epimera of the first are 

 narrow and rounded, of the second they are enlarged and then form a blunt point, 

 of the third they are more blade-like ; the posterior margin is straight, the anterior 

 being curved. 



The metasome comprises one short narrow segment wedged in the curvature of 

 the last of the mesosome and a urosome which is broader than it is long, rounded to 

 the insertion of the uropoda, and to that point its margin is minutely dentate ; beyond 

 these it terminates in a blunt point. 



The uropoda are very" minute, dorso-lateral in position and comprise a small 

 endopodite. The exopodite is extremely minute and can only be seen with difficulty. 

 Both branches terminate with a few small setae. 



The body is entirely covered with very small setae. 



The first antenna consists of a two-jointed peduncle, the first joint being 

 comparatively large and stout ; the second is not more than half the length and much 

 more slender. The flagellum is short, four joints only, of which the terminal one is 

 the longest. 



The second antenna has a peduncle of six joints, the first two are very small, 

 the third is large, swollen externally ; the fourth is very small and only forms a bend 

 in the appendage ; the fifth is smaller than the sixth, and the sixth is twice as 

 small as the preceding. The flagellum is scarcely as long as the last two joints of 

 the peduncle. 



The mouth parts are normal. 



The mandible has the cutting edge widely separated from the molar process, the 

 latter is curved, tapering, and ends in three spinous teeth and four more slender spines 

 below these ; near the base of this process arises the three jointed palp. The cutting- 

 edge is an elongated process widening distally to a straight edge which bears one 

 prominent tooth anteriorly. 



