REPORT ON THE SCHIZOPODA. 85 



moreover, does the anterior part exhibits no distinct keel above. Tlie rostral projection 

 (fig. 6) is exceedingly short, reaching but very slightly beyond the ocular segment, 

 and the frontal margin does not form any angle above the eyes, as in the preceding 

 species. 



The caudal segments are very powerfully developed, and, as in the preceding species, 

 smooth above. The epimera are rather deep and irregularly rounded in form, except the 

 posterior pair, which, as in Enphausia murrayi, are triangular* and produced. The last 

 segment does not exceed in length the preceding, and would seem to lack the preanal 

 spine. 



The eyes (see fig. 6) are very large and protruding, pyriform, with the cornea very 

 much expanded. 



The antennular peduncle {ibid.) exhibits an exceedingly robust structure, and has 

 a well marked cordiform lobe, projecting above from the end of the basal joint. 



The antennal scale {ibid.) is comparatively short, scarcely reaching to the end of 

 the second joint of tlie antennular peduncle ; it exhil)its an oval form, with the apex 

 somewhat obliquely rounded and the denticle of the outer corner very small, almost 

 obsolete. 



The gills (see fig. 5) would, on the whole, seem to agree in structure with those 

 of Euphausia murrayi. 



The exopods on the maxillipeds and legs, as also the pleopods, are very powerfully 

 developed, more so than in any other known species. 



The copulatory appendages to the first pair of pleopoda (fig. 7) closely resemble those 

 in Euphausia splenden.s ; still, however, some few differences in detail may be discerned. 

 Thus, for example, the outer process and the secondary hook of the inner one are cpiite 

 simple, and strongly curved, whereas these parts in Euphausia splendens are bidentate 

 at the apex. The appendages of the second pair of pleopoda (fig. 8) are comparatively 

 shorter, reaching but very little beyond the apex of the principal plate. 



The telson (see fig. 9) is comparatively shorter than in the other species, with the 

 apex very slightly produced and ol)tusely pointed. The subapical spines are exceedingly 

 slender and quite smooth. 



The uropoda (ibid.) reach somewhat beyond the tip of the telson, and have the inner 

 plate appreciably shorter than the outer. 



Colour. — According to the statements of Dana, this species, in a living state, is 

 characterised by a very conspicuous colouring, the whole body, save the legs and gills, 

 l:)eino; tino;ed with a brilliant red. 



Habitat. — The above described specimen was taken at the surface of the sea, along 

 with the larger specimen of Euphausia tmirrayi, February 19, 1874, in the Antarctic 

 Ocean, at Station 154. Dana ol)tained this species, too, in the Antarctic Ocean, south 

 of Van Diemen's Land, in lat. GG° 5' tS., long. 157° E. 



