[613] INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 319 



rnents. Anal segments sin all, with two long slender cirri. Color of 

 body translucent, light yellowish green ; the anterior part of the body 

 tinged with bright blood-red, due to the circulating fluid, showing 

 through the integument ; branchiae greenish, with a central series of 

 white spots ; setae of the palinulse, deep yellow. 



Length about 20 mm ; diameter, 2.5 mm to 3 mm . 



Off New Haven, low-water mark to 6 fathoms, shelly. It makes rough 

 tubes about an inch long, covered with coarse sand and mud. 



AMAOE PUSILLA Verrill, sp. nov. 



Body rather slender. Head obtusely rounded in front ; the middle 

 lobe small, and but little larger than the lateral. Eight slender 

 branchiae, about twice as long as the diameter of the body, arranged in 

 a crowded group ; two farther back than the rest ; and with no apparent 

 naked median space. Twelve of the setigerous segments bear long 

 fascicles of slender setae. No &quot; palmulae,&quot; or cephalic setae. Tentacles 

 numerous and slender. Two small, slender anal cirri. 



Length, 12 mm ; diameter, 1.5 mm . 



Off New Haven, 5 to 6 fathoms; shelly bottom. 



MELINNA CRISTATA Malmgren. (p. 432.) 



Nordiska Hafs-Annulater, loc. cit., p. 371, Plate 5iO, figs. 50-50D. Sdbellldes 

 cristata Sars, Fauna littoralis Norvegise, vol. ii, pp. 19, 24, PL 2, figs. 1-7, 1856. 



Mouth of Vineyard Sound, on muddy bottoms, in the deepest water; 

 Bay of Fundy, on muddy bottoms, in 10 to 90 fathoms ; near Saint 

 George s Bank, in 110 and 150 fathoms, mud. Off the Scandinavian 

 coast in 40 to 200 fathoms ; Greenland ; Spitzbergen. 



The tube is soft, flexible, slender, and covered with fine mud. 



TEREBELLIDES STROEMI Sars. (p. 507.) 



Beskriv. og lakttag., p. 43, Plate 13, figs. 31, a-d (teste Malragren) ; Malmgren, 

 Nordiska Hafs-Annulater, loc. cit., p. 396, Plate 43-43D, 1865. 



East of Block Island, in 29 fathtfms, sandy mud ; Bay of Fundy, 

 10 to 90 fathoms, muddy ; near Saint George s Bank, 85 to 150 fathoms. 

 Greenland, 10 to 250 fathoms ; Iceland ; Spitzbergen ; northern coasts 

 of Europe ; Adriatic Sea. 



AMPHITRITE ORNATA Verrill. PI. XVI, fig. 82. (p. 320). 



Terebella ornata Leidy, Marine Invertebrate Fauna of Rhode Island and New 

 Jersey, loc. cit., p. 14 (146), Plate 11, figs. 44, 45 (setae), 1855. 



Great Egg Harbor, New Jersey, to New Haven and Vineyard Sound 5 

 common in sand and gravel at low- water mark. 



NICOLEA SIMPLEX Verrill, sp. nov. (p. 321.) 



Body elongated, swollen anteriorly, especially above, attenuated 

 posteriorly. Head with a rather large, well rounded, or nearly circu 

 lar frontal membrane, which has a smooth margin ; mouth with a small 



