522 BULLETIN OF THE BUREAU OF FISHERIES. 



uropods extending beyond the others; rami about half the length of peduncle; ramus of terminal 

 uropods flattened, broadly ovate, the margins furnished with long setae. 



Specimens taken in the Eel Pond at Woods Hole had the body marked with purplish-brown 

 pigment cells; a dark, transverse band across the posterior end of each segment and another near the 

 middle: anterior portion of head dark. Peduncles of both antenna' with a few pigment cells near the 

 base; rest of body pellucid with sometimes a tinge of reddish-brown on the antennae; eyes black. 



Length, 3-4 mm. 



New Jersey (Say); New Jersey to Vineyard Sound (Smith); Provincetown (Rathbun). 



This species lives in suit tubes, although it is often found free. It is common among hydroids, 

 seaweed, on piles, ami on eel-grass. Its tubes may lie found in abundance on the eel-grass, especially 

 near the routs. A very common species. 



Siphonoecetes cuspidatus Smith. 



"Male: Head produced into a long, slender, acute rostrum, and each side between the antennula 

 and antenna into a long lobe, rounded at the end where the eye is situated, and contracted toward the 

 base. Antennula reaching about to the middle of the fourth segment of the peduncle of the antenna; 

 segments of the peduncle equal in length; rlagellum scarcely longer than a segment of the peduncle, 

 and composed usually of five segments. Antenna a little longer than the body; third segment of the 

 peduncle a little longer than any segment of the peduncle of the antennula; fourth segment nearly 

 twice as long as the third; last segment nearly one-half longer than the third; flagellum a little shorter 

 than the last segment of the peduncle. Legs much like Kri'iyer's figures of S. typicus, those of first 

 pair with the carpus twice as long as broad; propodus slightly narrower and a little longer than the 

 carpus, the posterior edge furnished with long hairs and several stout spines. Legs of the second pair 

 much stouter. Posterior caudal stylets with the terminal process fully as long as the ramus itself; the 

 ramus as broad as long, the extremity obtusely rounded and furnished with very long hairs; telson 

 broader than long, transversely elliptical. In the female the antennie and second pair of legs are 

 more slender than in the male. 



In alcoholic specimens the antennula? are marked with narrow bands of black or dark brown upon 

 each segment of the rlagellum and at both ends of the second and third segments of the peduncle, and 

 the antenna' are obscurely branded or tinged with a lighter color. 



Length, about 6 mm. In inhabits tubes constructed of grains of sand. In deep water off Vineyard 

 Sound and Buzzards Bav." 



I have not met with this species, and have therefore simply quoted Professor Smith's description. 



Ptilocheirus pinguis Stimpson. 



Body thick; eyes oval or nearly reniform; first antennas about half the length of body; first basal 

 joint nearly as long as second, which is nearly three times the length of third; flagellum slender, 

 longer than peduncle; secondary flagellum composed of about seven joints; second antennae about 

 two-thirds as long as first pair, subpediform; flagellum a little longer than last joint of peduncle, but 

 not nearly so long as last two; coxal plates of first four perreopods well developed, deeper than their 

 segments, their lower margins strongly setose and their postero-lateral angles with a few spine-bearing 

 serrations; first gnathopods with coxal plates much smaller than in the following three pairs and very 

 much produced forward so as to reach anterior end of bead: anterior margin and a portion of posterior 

 margin of basal joint furnished with long setae; lower margin of ischium and posterior margins of 

 merus, carpus, and, to a less extent, the propodus furnished with setae, those on ischium being 

 especially long; carpus elongate; hand subquadrate, widening distally, palm nearly straight and 

 slightly oblique, with a spine at its posterior angle; first gnathopods in the male larger and stouter 

 than in the female; basal joint thicker, relatively longer and stouter, and furnished with a stout, 

 spine-like process near distal end of lower margin, which is absent in the female; propodus a little 

 wider than in the female and coxal plate larger; propodus held bent inward so that it stands nearly 

 at right angles to the carpus; second gnathopods longer than first; coxal plate suboval in form, 

 projecting much beyond the others in the adult male but not in the female; basal joint with anterior 

 margin densely fringed with very long, slender seta/; carpus narrow and elongate, much exceeding 

 propodus; propodus narrow, not chelate, tapering toward distal end; both margins of carpus and 



