REPORT ON THE SCHIZOPODA. HI 



The caudal .sogments are quite smooth above, and provided with comparatively rather 

 small, rounded epiniera. The last segment somewhat exceeds in length the jjreceding, 

 cind does not exhibit any trace of a preanal spine. 



The eyes (see figs. 2 and 4) are remarkably small, incompletely developed, and do not 

 in the least project beyond the sides of the carapace. The jjcdicle is narrow cylindrical, 

 but expands at the end, above, as a knob-like prominence. The cornea occujiies only a 

 small part of the eye, and is distinguished by its light, whitish pigment, as also by the 

 surface exhibiting no true corneal facets or other visual elements, bvit merely an 

 indistinct and irregular areolation. 



The antennular peduncle (figs. 5, G) is remarkaljl\- slmrt and thick, with the basal 

 joint somewhat flattened, and ab(jut as large as the other two taken together ; moreover, 

 it juts out above at the end, somewhat interiorly, as a pointed process, bearing on the 

 inner edge a row of stiiF incurved bristles (see fig. 6). The fiagella were broken off" in the 

 specimens examined, but would seem to have been rather elongate, judging from the 

 thickness of the still remaining basal part, more especially of the outer flagellum. 



The antenna! scale (fig. 7) about ecpials in length the antennular jjeduncle, and exhibits 

 an oblong-ovate form, the apex being broadly rounded and somewhat oblique, with the 

 outer corner not in the least projecting, and armed with a very minute denticle. The 

 basal spine is likewise very small, nearly obsolete, whereas the peduncle of the flagellum 

 is very strong, reaching to the tip of the scale. The terminal part of the flagellum was 

 broken off" in the specimens examined, but may no doubt have been very elongate. 



The anterior lip (fig. 8) is comparatively large, and has the lateral corners a good 

 deal projecting; for the rest, it shows the stucture characteristic of the family. 



This will also apply to the posterior lip (fig. 9), the terminal lobes of which have the 

 usual triangular form. 



The mandibles (figs. 10, II) are very strong, with the masticatory part considerably 

 expanded, securiform, and scooped out a little anteriorly. The cutting edge is sharpened 

 and exhibits a small number only of scattered teeth, somewhat differently arranged on 

 the two mandibles (see fig. 10). The palp is comparatively very large, fully equalling the 

 mandible itself in length. Of its joints, the middle one is by far the largest, and rather 

 broad, as also fringed along both edges with strong ciliated bristles. The last joint is 

 oblong, and furnished along the inner edge with a double series of bristles. 



The maxilla} (figs. 12, 13) exhibit a structure very different from that observed in 

 any hitherto known form of Euphausiidas, and would thus fully warrant the generic 

 distinctness of the present form. 



The first pair of maxillae (fig. 12) have the two masticatory lobes very unequally 

 developed, the posterior lo'oe forming merely a broad, lamellar expansion of the basal 

 part, fringed along the edge with a dense row of plumose setae, whereas the anterior lobe 

 projects very considerably, and is dilated into a somewhat securiform apex, which is 



