1885.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 433 



Tol. \III,]\'o. 38. ll^ashiiigrton,]l.€. 4Se]>tr^3, 1885. 



dorsal border and at the base of tbe upper tentacular cirri there is, on 

 euch side, a cluster of small })ai)illa3, about five in each cluster. Cau- 

 dal cirri two, small, rather obtuse, papilliform, projecting but slightly 

 beyond the posterior parapodia, and shorter and more obtuse than the 

 Iroutal anteuniie. The parapodia bear very large dorsal branchiaj, which 

 are broadly rounded, imbricated, and almost completely cover the back ; 

 the anterior pair are smaller, narrower, and more ovate than those that 

 succeed them. The posterior branchiae are more crowded and more 

 closely imbricated than the anterior ones, and entirely conceal the dor- 

 sal surface of the body. Color very dark green. 



Off Martha's Vineyard, in 100 fathoms, 1881. U. S. Fish Commission 

 steamer Fish Hawk. 



Anaitis formosa Verrill, sp. nov. 



Verrill, Trans. Conn. Acad., vol. iv, pi. 23, tig. 8. 



Body moderately large, rather slender, tapered to both ends. Head 

 moderately large, somewhat pentagonal in outline ; it is broadest oppo- 

 site the eyes, which are situated close to the lateral angles, a little be- 

 hind the middle. From the lateral angles the head narrows rapidly to 

 the anterior end, which is small and obtusely rounded ; posteriorly the 

 head narrows less, and the posterior border is subtruncated in the mid- 

 dle. Eyes rather large, wide apart, black. Frontal antenna? four, sub- 

 equal, small, slender, tapered to acute tips ; their length is less than 

 the breadth of the head. Proboscis, as seen extended, is narrow, cylin- 

 drical, and covered with rather large, prominent, obtuse papillae. Buc- 

 cal segment is large, broader than the head, and extends forward on 

 the sides of the head to the lateral angles. Tentacular cirri four on 

 each side, similar in form, the two superior ones somewhat longer than 

 the two inferior; they are all thickened a short distance above the 

 base, and then taper gradually to the short acute tips. The longer 

 ones are in length as long as the head and buccal segment together, 

 and extend back to the fourth body-segment in alcoholic specimens. 

 The branchiae on the first few segments are rather small, ovate ; farther, 

 back they gradually increase in size until at the eighth they become 

 large, broad-ovate, with the ends well rounded, and conceal the para- 

 podia and a considerable portion of the dorsal surface of the body. 

 Color, pale green, crossed by two conspicuous bands of much darker 

 green on the seventh and eighth body-segments. 



Vineyard Sound, Massachusetts, in shallow water; also taken at the 

 surface, August 1, 1881. 



Anaitis picta Verrill sp. nov. 



Verrill, Trans. Conn. Acad., vol. iv, pi. 14, figs. 1, la, 1881. 



Body of moderate size, rather slender, gradually narrowed anteri- 

 orly, broader and obtusely rounded at the posterior end. Head rounded 

 Proc. Nat. Mus. 85 28 



