EEPORT ON THE SCHIZOPODA. 99 



Milne-Edwards' work. On the other hand, this figure shows distinctly another feature, 

 very characteristic of thepresent species, and not found, so far as I know, in any other 

 form, viz., the peculiar shape of the two anterior pairs of caudal epimera. Moreover, in 

 several other respects, for example, in the form of .the maxillae, the present animal agrees 

 perfectly with Milne-Eclwarcls' species, and hence I cannot but regard them as identical. 



Description. — Most of the specimens collected are rather small, and apparently not 

 yet full grown ; but there is in the collection one specimen — a female — much larger than 

 the others, and measuring 24 mm. in length. This example, which, I lielieve, has attained 

 its full size, is represented in PI. XVII. fig. 1, vv'hereas the anatomical figures were pre- 

 pared from one of the smaller specimens. 



The form of the body (see fig. 1) is rather slender and somewhat compressed, with 

 the tail, in all the specimens, exhibiting a marked bend in the middle, the three posterior 

 segments being more or less deflexed, forming an obtuse angle with the anterior ones. 



The carapace is rather deep in its posterior part, and exhibits on either side two 

 strong and rather distant denticles projecting from the inferior margins, the anterior 

 placed just above the point of insertion of the maxillipeds, the posterior above the base 

 of the penultimate pair of legs. The anterior part of the carapace is much narrower 

 than the posterior, and juts out as a sharp-pointed rostral projection, reaching beyond 

 the middle of the basal joint of the antennula3. Immediately beneath the base of this 

 projection occurs a very minute denticle, and on the dorsal face, a little behind the 

 rostrum, is seen a rather strong and somewhat flattened spine, pointing straight forwards. 



The caudal segments are powerfully developed, and provided with rather large 

 epimera. Of these, the two anterior pairs curve forwards, whereas the three posterior 

 ones are du-ected obliquely backwards, having the posterior angle somewhat produced. 

 The first pair of epimera are much the largest, and exhibit a rather peculiar form, being, 

 as it were, divided into two acute and anterior curving lappets, the posterior of which is 

 the larger and ]Drovided with a small secondary tooth at the inferior margin ; the anterior 

 lappet would seem to be partly overlapped by the hinder margin of the carapace. The 

 four posterior segments project at the end, above, as well-marked acute spines, pointing 

 backwards, of which that of the third segment is much the largest. The last segment 

 is rather elongate, with the. preanal spine distinctly developed, and armed at the base 

 with a small secondary denticle. 



The eyes (see fig. 2) are very large and protruding, pyriform, with the cornea con- 

 siderably expanded. 



The antennular peduncle (fig. 5) is comparatively slender, and almost cylindrical in 

 form, with the basal joint about as long as the two others taken together. It exhibits 

 above two very narrow lanceolate lappets, the one extending from the end of the basal 

 joint, the other originating from the second joint. Moreover, the outer corner of the 

 basal joint is drawn out to a strong forward-pointing spine. 



