﻿128 



COPEPODA 



minent conical process without hair, is well separated from the Re II, which possesses a basal, a median 

 and distal short conical protuberance without any hairs ithe 2 first are shown in Scott's fig. 17). The 

 Le of the maxillulae possesses 8 setae, of which the 3 basal are rather short and delicate, and the fifth 

 moderately long, but much shorter than the fourth as well as the following one, which are long 

 and powerful; the number of setae is else as in the E. curticaiida. The maxillae differ from those of 

 E. messinensis by somewhat stronger spines and more pronounced spinulation on the posterior surface 

 of the lobes. The inaxilHpeds are most like those of E. curflcauda; the tliird basipodite is 2'5 as long 

 as the Ri, which has 4 setae in the Ri 2. 



The /irst pair of legs is scarcely different from that of E. curticauda ; the second pair of 

 legs has a well marked tooth in Ri I, and the Se Re II extends as shown I:)y Wolfenden at least 

 to the tip of Se I Re III; the third pair of legs has the accessor)' tooth, corresponding to Se Ri I pointed 

 and well developed; the second basipodite of the fourth pair of legs, which is strong, broad and of 

 triangular shape, extends barely to the end of the somite, and seems, as figured by Scott fig. 20 

 PI. XII, to be formed by the fusing of about 4 spines. The pores are like those of E. messinensis. 



The labrnm (fig. 5 e), as seen in figure, has the inner marginal row well developed, but the 

 outer one seems to be represented by a few minute granules. The oral surface is in all main features like 

 that of E. curticauda. but differs as seen in figures, as f. inst. by the tliird group, which is not conver- 

 ging but diverging posteriorly. The lamina labialis (fig. 5 f ) is striated but not distinctly granular; the 

 area in front of the lamina is rather similar to that of E. curticauda (cf. fig. 3 d), but the lateral series, 

 which forms the continuation of the scrrula 6-dentata, has only a single row of fairly strong spines, 

 and the inner series has about 25 sliort spines in a single row in addition to the usual area covered with 

 acicules, which starts behind the end of the inner series. The arrangement of setae behind the lamina 

 labialis and at the labial lobes (fig. 5 g) is, as far as series III — V are concerned, practically like that 

 of the preceding species, but as far as the first series is concerned is rather different. 



f?. Size of specimen from Thor St. 167 was 67 mm.; anterior division 5-1 mm.; urosome 16 mm. 



The body (text-figs 33a— b) is moderately slender; the head and first thoracic somite are com- 

 pletely fused; the lateral corners are rounded, and the fourth and fifth somites are completely fused. 

 The head is surmounted by a fairly big, prominent, rounded, keel and has a short, strong, compressed 

 and undivided rostrum. The abdomen is about one third as long as the anterior division; the first and 

 second somites, which are of equal length are somewhat longer than the third, and about as long as the 

 fourth; the serration along the hinder margin of .somites II — IV is short and delicate. The furcal rami 

 are about as long as wide; the St. II, which is distinctly longer than the abdomen and twice as long 

 as Si, is longer than St. I — III, and again longer than St IV. 



.The antennulae extend to the end of the second abdominal somite; they are in most respects 

 like those of E. curticazida. The exopodite of. the antennae, which has an indication of a protuberance 

 in Re I, is 1-4 as long as the endopodite, which possesses 5 setae in Le and 7 setae in Li. 



The maxillulae possess 8 setae in Le, completely like those of the female; the Li I and II are 

 fairly well developed, and possess a few soft contorted appendages, and the Si of the Re is fairly long, 

 but in other respects the appendages are scarcely different from those of E. curticauda; the maxillae 

 and maxillipeds are practically like those of the preceding species. 



