﻿COPKl'OUA 



213 



and slender spines (text-fig. 67a). The fifth thoracic somite is well distinguished in front, and the 

 regularly rounded lateral corners are scarcely produced. 



The ahdoiiini is one third as long as the anterior division; the comparative length of the 

 abdominal somites and the fnrca is iS, 67, 53, 4S, 10 and 18. 



The (uitouinlac extend at least to the end of the third abdominal somite; the shape is similar 

 to that of .V. )iiagiii(s^ but the proximal part is straighter, the restrictions at the base of the ba.sal 

 segments are less pronounced, and the angle between segments 14 and 15 in less marked. Segments 

 8^9 are almost completely fused with 10—12, segments 20 and 21 and 24 — 25 are completel>- fused. 

 The appendages are scarceh' different from those of S. iiiag)uis\ the segment 20 does not possess any 

 setae. The segments 8^12 are it as long as segments 23 — 25, not, as in .S'. wc/i^y/7^r and related species, 

 much (1-5) shorter, and segment 22 is i-2 shorter than segment 19. The milnnia are scarcely different 

 from those of adult females, and the iiiaiidibulac are ver\' much like, but the manducatory parts are less 

 powerful, and the third basipodite is comparati\ely wider, with two short setae inwards, and a more 

 distally placed knob representing a third one. The I^i I of the inaxillular is fairly well developed, 

 and has at least 12 rather short and soft setae; in Li 

 III only 4 setae were observed, but in other respects 

 scarcely an\- difference was observed. The iikix/I/hi 

 have the sensory appendages, especially the anialliform 

 ones, slighth' de\-eloped; the niaxillipeds are like those 

 of S. )nagnus. 



The natatory legs are scarcely differer.t from 

 those of the female. The fifth pair of legs extends 

 almost to the end of the abdomen, and shows great 

 similarity to that of .5". iiiaginis. The right endopodite, 

 which extends somew-hat beyond the end of the first 

 outer segment, is styliform, with the terminal part 



fairly well articulated. The right exopodite (text-fig. 67 c) has the first segment articulated upon a 

 long outer process of the third basipodite as long as the segment itself; the two pieces form a natural 

 joint, elongated and outwards convex; the second outer segment is much shorter than the first; the 

 third .somewhat lamelliform segment is again somewhat longer, convex inwards, with a distinct angular 

 process in the middle directed forwards, and produced into a pointed eminence, at the Ijase of which 

 a small conical process is found. The ba.sal segments of the left leg are long and slender, and of ahno.st 

 equal length; the left endopodite (text-fig. 67 di is like that of .V. niagiiiis, with the two first .segments 

 long and slender, and the third rather short and pointed; the left exopodite is somewhat .shorter than 

 the endopodite, and its third segment is triangularly attenuated, with fairly long .setae inwards and 

 terminally and short ones outwards. 



The (Dilrrior sitrfacr of the labniiii is \er\- much like thai of the female; anteriorly three 

 irregular series of apparenth very short setae are found; the series along the hinder margin is wanting. 

 The oral snrfacr has anteriorl\- a small conical i)roccss on each .side, behind which at least two striated 

 median .spots are found; on each side an irrcgularK' striated ])roluberance was found; no hairs were 



Text-fig. 67. Loplwllirix frontalis S(J. 

 Htad : iS. b. .■\b.U)iiK.-n X iS. c. Pes V dext. 

 Re II-III , 59. (1. Pes V sin. X 59. 



