AMPHIPODA OF SOUTHERN NEW ENGLAND. 



469 



Talorchestia megalophthalma ( White). 



Eyes very large, covering greater part of head; first antennas with the three joints of peduncle of 

 aubequa] length; flagellum much shorter than peduncle; second antenna' much as in T. longicornis, 

 but shorter; first gnathopods in male much as in preceding ,-pecies; fifth joint with a prominent infe- 

 rior lobe; sixth joint narrowing somewhat from the base to within a short distance from the distal 

 end, where it is widened into a rounded posterior lobe; second gnathopods of male with a large, more 

 or less ovate hand, with anterior margin evenly convex and the much shorter posterior margin marly 

 straight; palm oblique, evenly convex, spinulose, with a prominence bearing a strong spine at the 

 posterior end; first gnathopods of female with no prominent inferior lobe and the sixth joint tapering 

 distally and not produced at lower end; second gnathopods of female closely resembling those of T. 

 longicornis; second abdominal segment produced into a small, acute, triangular process at infero-distal 



Tnlorc/ifstia megtUophthaima. 



Woods Hole, Muss. The second gnathopods of the male are drawn to a smaller scale 

 than the other parte. 



angle; first uropods with rami equal and about equal to peduncle; second pair with rami longer than 

 peduncle, inner ramus the longer; third pair with ramus slightly longer than peduncle. 



Color whitish. 



Length, 15 mm. 



Casco Bay, Maine; Provineetown (Rathbun); Cape Cod to New Jersey. 



This species is much less common than longicornis, but lives in similar situations. It is readily 

 distinguished by its large eyes and the shape of the second gnathopods in the male. The specimen 

 which was named Orchestia megalophthalmus by White and from which Bate drew his description came 

 from an unknown locality. Owing to Bate's imperfect description and poor figure, it might be 

 doubted whether the specimens referred to megalophthalma by Smith really belong to this species. 

 Through the kindness of Mr. Bell, I have been able to compare specimens from Woods Hole, Mass., 

 with the type specimen, which is preserved in the British Museum. Although the type is badly 

 mutilated, I am convinced that the specimens from Woods Hole, which I brought for comparison, 

 belong to the same species. 



Orchestia agilis Smith. 



Eyes prominent; antennules scarcely reaching penultimate joint of peduncle of antenna; flagellum 

 shorter than peduncle; antennse scarcely half the length of body; peduncle stout in the male, last 

 joint a little longer than preceding one; flagellum shorter than peduncle ami composed of 10-15 

 short, compressed joints; first gnathopods of male with carpus produced below into a huge, rounded 

 lobe; propodus shorter thaw carpus, distally widened, the infero-posterior angle produced into a large 



