REPORT ON THE AMPHIPODA. 1.317 



apex of the hind margin ; the hind margin not uniformly convex, but almost straight 

 for a large space on either side of the centre ; the apical part of the third joint not 

 quite reaching the apex of the fourth ; the fourth joint about as long as the fifth. 



Fifth Perseopods nearly as in Eupronoe pacifica, but the first joint rather broader 

 at the upper part, and the narrowly oval terminal joint smaller in proportion to 

 the first. 



The Pleopods, Uropods, and Telson differ little from those of Eupronoe pacifica, but 

 the telson has a narrower apex. 



Length, about one-fifth of an inch. 



Locality.— Station 288, October 21, 1875; South Pacific; lat. 40° 3' S., long. 

 132° 58' W.; surface; surface temperature, 54°"5. Five specimens. 



Eupronoe intermedia, n. sp. (PL CLXXXVIIL). 



Viewed from above the head has a triangular outline, with an almost acute apex ; 

 the fourth segment of the pleon a little shorter than the following composite segment. 



Antennae nearly as in Eupronoe inscripta; in the upper antennae the first joint of 

 the flagellum, besides the great brush of filaments on the convex margin, has two broad 

 filaments on the apex of the upper margin ; the second has four near the middle, 

 the third has two ; the fourth joint is linear, nearly as long as the two preceding- 

 together. 



Upper Lip a broad shallow dome. 



Mandibles. — The trunk sinuous, forming an upward bent angle behind the palp and 

 one downward bent in front of it ; the cutting edge broad, with a prominent tooth at 

 each extremity, the lower one the more acute, the intermediate margin straight, very 

 minutely denticulate ; the left mandible shows a similarly denticulate secondary plate, 

 without prominent teeth at the extremities, and besides this near the middle of the 

 straight hind margin of the secondary plate there is a small process like a short blunt 

 tooth or spine ; there is a similar and not larger process on the right mandible ; the palp 

 is placed on a short joint-like elevation, the first joint broader and longer than either 

 of the others, not equal in length to the two together. 



First Maxillse. — There are four teeth on the inner margin near the apex of the 

 plate. 



Second Maxillm and Maxillipeds as in Eupronoe pacifica. 



First Gnathopods. — Side-plates with the advanced front corner rounded, not acute. 

 The first joint strongly twisted, the neck very narrow, but the elbow as broad as the 

 lower part of the joint ; the third joint broader than the wrist, not more produced 

 behind than in front, the hinder margin pectinate chiefly at the lower part ; the wrist 

 not longer than broad, distally narrower than near the base, the hind margin sharply 



