REPORT ON THE SCHIZOPODA. 83 



tion, and admits of Ijeing distinguished from Euphausia splendens, to which form it 

 bears a close relationship, — except in its much larger size, — l)y a somewhat more slender 

 form of body, the comparatively shorter eyes, the presence of a well-marked cuticular 

 lobe at the end of the basal joint of the antennula3, the peculiar expanded form of the 

 gills, and finally by the form of the posterior pair of caudal epimera. 



Description. — Of this species, the collection has two specimens, the larger of which 

 reaches a length of 43 mm. Both are females. 



The form of the body (see PI. XIV. fig. l) would seem to be a trifle more slender 

 than in Euphausia splendens; the anterior division in particuhir is appreciably more 

 elongate as compared with the posterior. 



The carapace, as in Euphausia splendens, has on either side a distinct lateral denticle, 

 which, however, occurs somewhat in front of the middle of the lower margin. Its 

 anterior part is very slightly keeled above, and marked off by a distinct cervical impres- 

 sion. The rostral projection (see fig. 2) is very short and triangular, l)ut slightly over- 

 reaching the ocular segment, and, moreover, rather sharply defined from the frontal 

 margin, which on either side exhibits an obtuse angle above the eyes. 



The caudal segments are smooth above, and provided with rather deep, irregularly 

 rounded epimera. Those on the penultimate segment are, however, somewhat dissimilar, 

 being rather produced in the form of acute, triangular plates, pointing backwards and 

 overlapping the last segment. This, too, is but very little, if at all, longer than the 

 preceding, and does not exhibit any trace of a preanal spine. 



The eyes (see fig. 2) are rather short and thick, almost clavate, and but slightly 

 projecting on either side. 



The antennular peduncle (ibid.) is comparatively elongate, and has a distinct 

 cuticular lobe projecting, above, from the end of the basal joint, as also another much 

 smaller one, exteriorly, at the end of the second joint. Both the lobes are extended 

 horizontally, and exhibit a somewhat triangular form, the larger one is also obliquely 

 emarginate at the tip. 



The antennal scale (ihid.) projects a little beyond the second joint of the anten- 

 nular peduncle and has a rather elongate, oblong-linear form, with the apex narrowly 

 truncate and the denticle of the outer corner very small, though quite distinct. 



The giUs (fig. 3) are characterised hj a somewhat unusual form of the trunk, which 

 is greatly expanded and flattened, well-nigh semilunar, and has aflixed to the outer 

 convex edge a very considerable number of exceedingly slender, nearly filiform gill- 

 lobules. The posterior pairs of gills (see fig. 1) are richly arborescent, exhibiting an 

 abundance of cui-ved secondary lu-anches. 



The telson (see fig. 4) exhibits the usual slender form, and has three pairs of small 

 dorsal denticles. The subapical spines were broken in the larger specimen; in the 

 smaller one they are of moderate size and quite smooth. 



