Oammar ids from New ZeaJanJ. 447 



second paii of gnathopotls, I deferred publishing a descrip- 

 tion of them in ihe hope that I shouhl lind and recognize the 

 female forms among the ahun(hint material since obtained 

 from many parts ot the colony. This 1 have not yet .suc- 

 ceeded in doing. It is, of course, perfectly possible that I 

 have passed them over without recognizing them, having 

 referred them to other species. The males arc unmistakable. 

 01' Mara C'/n'/loni six specimens were taken, and of M. llas- 

 uelli i'ouv; but all are extremely fragile in structure and all 

 are so much mutilated that in regard to certain limbs the 

 structure has been but imperfectly made out. 



Mara Chiltoni*^ sp. n. (PI. X. figs. 1-5.) 



Body slender, rather compressed ; pleon well developed. 



Ceiihdlon produced forward below the articulation of the 

 superior antennte into an obtusely j)ointed lobe on each side. 

 The eyes, which are subreniform in shape, but broader in the 

 lower than in the upper part, and are formed of numerous 

 ocelli, occu))y the greater portion of this lobe, and are placed 

 close up to its anterior margin. 



First antenna'. — First joint of peduncle stout, half as long 

 as the cephalon, with a few seta; on the sides and at the 

 extremity ; second joint about twice as long, much more 

 slender, and with six or seven tufts of setse on the lower 

 margin ; third about two thirds as long as second, with a few 

 tufts of setfe. 



Flagellum lost ; secondary jlagellum (also lost) nearly as 

 long as last joint of peduncle. 



Second antenna; somewhat longer than cephalon and the 

 three first thoracic segments ; peduncle subequal in length 

 with that of the first antennse ; first joint short, second and 

 third subequal, nearly twice as long as the first, and with a 

 few tufts of setai on the lower margin ; flagellum slightly 

 longer than last joint of peduncle f. 



Mandibles subquadrate ; left with the cutting-plate pro- 

 duced almost at right angles to the basal portion into a stout 

 two-lobed tooth, secondary plate shorter and two-toothed, spine- 

 row reaching back almost to the molar tubercle, with about 

 six curved spines; 7-tght (not satisfactorily made out) witii 

 secondary plate well developed, broadening upwards and 

 ending in about four deep indentations; palp with the second 



* Named in honour of Dr. Charles Chilton, F.L.S. 



t Owincr to an accident many of the smaller parts of the animal were 

 lost after dissection ; hence the imperfection of tbe description in several 

 places. 



