MAKINE INVERTEBRATA OF GRAND MANAN. 57 



PSEI DOPTIIAIiMUS, St., n. g. 



Body greatly compressed, with large epiraera. Head with an irregular deposi- 

 tion of hlackish or reddish pigment anteriorly, in which are one or two orbicidar 

 clear spots on each side, without facets. Maxillipods with five articles, of which 

 the terminal one is oval ; internal lamella^ witli combs of spines at their apices. 

 Mandibles palpigerous. Antennae very slender, the superior ones with their basal 

 articles much thickened, and without accessory fiagella ; inferior ones arising much 

 behind the bases of the superior ones. Legs of the first and second pairs sometimes 

 with small subchcliform hands, shorter than the antepenult segment, but often 

 simply unguiculate; those of the tliird and fourth pairs elongated, tapering, with 

 their second joints very small, the third expanded into a hand ; posterior pairs 

 short; last pair with very broad basal joints. Caudal stylets all biramous. Tail 

 terminating in a thin lamella. Epimera and third and fourth pairs of legs with 

 plumose seta) along their edges. 



r. PELAGicus, St., n. s. Compressed, very smooth and shining; head with dark- 

 red pigment, with two clear spots on each side, one above the other, at the bases of 

 the superior antennae. Inferior antenna3 very slender, as long as the body; supe- 

 rior ones two-fifths as long as the inferior ones. Legs slender, posterior ones with 

 few stout spine-like hairs. Caudal stylets of the first and third pairs projecting 

 • beyond those of the second. Abdomen sinuated above on the last three segments. 

 Color pale wine-yellow. Length, 0.4 inch. Taken on a soft muddy bottom in 

 35-50 fothoms, off Long Island, G. M., and in 30 f , sand, in the Hake Bay. 



Another species (P. limicoJa, St., n. s.) is taken at low water in Charleston Har- 

 bor, S. C, living in holes in the soft mud, which is larger than the preceding, and 

 has but one clear eye-spot on each side of the head. The first two pairs of legs are 

 simply unguiculate, and in the third and fourth pairs the third joint forms a slender 

 hand, and the last three joints a finger, of which the terminal unguiform article 

 is exceedingly long and slender. The last pair of caudal stylets terminate in 

 very broad, fiat, lanceolate rami. This notice of a southern species is added to 

 illustrate the genus. 



Pnoxus FUSiFORMis, St., n. s. Body tapering at both extremities. Head small, 

 with white eyes. Rostrum subtriangular, scarce distinct from the head, broadly 

 projecting over the bases of the antennas, which are short, in structure like those 

 of Anonyx, except that the bases of the inferior ones are broad, compressed, and 

 very hairy on their edges. The superior and inferior ones are about equal m 

 length, and would reach the second thoracic segment. Tlie accessory fiagella of 

 the superior ones are nearly as long as their terminal articles. Legs of the first 

 two pairs subequal, with broad, oval, subchcliform hands, which have a slight 

 offset on the lower edge, just reached by the finger when closed. Third and fourth 

 pairs with the antepenult article but slightly expanded, and three or more ungui- 

 form spines set on the extremity of the terminal article. Sixth pair with long. 



