54 Mil. A. O. WALKER ON AMPillPODA 



Pirst and second j^eraeopods : fourth joint about as long but 

 twice as thick as the 5th, densely clothed with long setae on the 

 posterior margin ; the 5th joint similarly clotlied on the anterior 

 margin. Dactylus acutely ovate. 



Remaining parts as in O. saginatus, Kroyer. 



Length 8 mm. 



Yery near O. saginatus, from which it differs principally in the 

 more compressed body, and in the longer and narrower form of 

 the 2nd gnathopod, 



Eam. EpiMEBiDiE. 

 Genus Epimeeia, Costa, 1851. 



E. iNEBMis *, n. sp. (PI. 10. fig. 69.) 



Cape Adare, 28 fath. One specimen. 



Body robust; 1st segment a little longer than tlie 2nd, but 

 shorter than the 3rd, remaining segments of mesosome longer, 

 with elevated dorsal carinas. First three side-plates narrow, 

 pointed, angularly convex, and about as deep as the segments. 

 Eourth side-plate broad, the lower margin obtusely angulated, 

 and forming an acute angle with the hind margin. The 5th and 

 6th side-plates quadrangular and convex, the posterior angle 

 subacute, not produced ; the 7th small, rounded, and partly con- 

 cealed by the downward prolongation of the segment. The 

 lower part of the mesosome-segments is slightly raised, forming 

 a low tubercle. 



The 1st segment of the metasome is narrowed and rounded 

 below ; the 2nd and 3rd segments have the posterior angle acute, 

 the hind margin in the last being convex ; the dorsal carina on 

 the 2nd segment has a shallow median notch ; the carina of the 

 3rd segment is lower with an irregular margin. 



The 1st segment of the urosome is dorsally depressed, scarcely 

 cariuate ; the 2nd segment very short, the hi]id margin elevated ; 

 the sides of the last segment are elevated beliind. 



The telson is rather more tapering than is usual in this genus, 

 with a small terminal notch. 



The rostrum is about as long as the rest of the head ; the eye 

 as in E. coroiigera (Eabr.) and other species. 



Length 28 mm. Colour red. 



* " Unarmed," from the absence of the blade-hke prolongations of the 4th 

 and 5th side-plates that are found in the other species of the genus. 



