INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 565 



and third segments of the abdomen produced into a slight angular 

 prominence at the postero-inferior angle. The posterior edges of the 

 bases of the sixth and seventh pairs of legs not serrated bat armed with 

 two to four small spines. First and second pairs of caudal stylets ex- 

 tending scarcely beyond the posterior pair. In the first pair there is a 

 long, slender spine projecting from the distal extremity of the base be- 

 neath the rami. 



Length of largest specimen examined, 13 mm . 



North Carolina to Cape Cod. Common among eel-grass. Taken at 

 surface in Vineyard Sound, 



Podocerus fucicola Smith, (p. 493.) 



Cerapus fucicola Stimpson, Marine Invertebrata of Grand Manan, p. 48, PL 3, 

 fig. 34, 1853. 



This species was dredged by Professor Yerrill, in 4 to 5 fathoms, off 

 Watch Hill, lihode Island, in April, 1873. It is common in the Bay of 

 Fundy. 



Podocerus, species, (p. 494.) 



Another species of the same genus was taken in abundance with the 

 last. It is a large and dark-colored species. 



Cerapus rubricornis Stimpson. Plate IV, fig. 18. 



Marine Invertebrata of Grand Manan, p. 46, PI. 3, fig. 33, 1853; Bate, Catalogue 

 Amphip. Crust. Brit. Mas., p. 256, PI. 45, fig. 4. 



Not common south of Cape Cod, but very abundant in the Bay of 

 Fundy and north to the coast of Labrador. In depth it extends down 

 to 100 fathoms at least. 



Cerapus minax Smith, sp. nov. 



AntennuhTe and antennas about equal in length, rather more than half 

 as long as the body. Second pair of legs greatly developed in the male, 

 the hand nearly half as long as the body ; carpus elongated, narrow, 

 nearly three times as long as the breadth in the middle, the posterior 

 angle projecting into a broad process about as long as the dactylus, and 

 armed on the inside with a tooth nearly as stout as the distal part of 

 the process itself, but projecting only about half as far; propodus about 

 half as long as the carpus, twice as long as broad; dactylus consider- 

 ably shorter than the propodus, the tip in most of the larger specimens 

 furnished with a pencil of long hairs. In the female the hand in the 

 second pair of legs is small ; the carpus produced into a long process on 

 the inferior edge of the propodus to the palmary margin ; propodus 

 short, broad, somewhat oval, the palmary margin arcuate and armed 

 with several short spines on the portion next the carpal process. 



Length, about 4 mm . 



Long Island Sound, Vineyard Sound. 



? Cerapus tubularis Say. (p. 396.) 



Loc. cit., p. 49, PI. 4, fig. 7-11, 1817. 



Several specimens of a small amphipod, dredged, June 27, in Vineyard 



