604 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



are considerably longest. The setae commence opposite the mouth and 

 extend to the posterior end ; they form two fan-shaped fascicles on each 

 side of each segment, closely approximate at their origin, but strongly 

 divergent, the upper ones directed upward, the lower ones downward ; 

 the .setae are very long and slender on the middle segments, those of the 

 upper fascicles longest, and exceeding half, the diameter of the body ; 

 anteriorly they are considerably shorter ; they are somewhat expanded 

 toward the base, but have long and very slender tips. Dorsal cirri 

 rather long and stout, transparent and wrinkled, blunt at tip, thickened 

 at base; in length nearly equaling a third of the diameter of the body. 

 Color yellowish white, tinged with brownish on the sides. 



Length, 8 mm to 10 mm ; diameter, 1.5 mm . 



Savin Eock, at half-tide. Point Judith, Ehode Island, below low- 

 water mark (Leidy). 



The specimen above described was found under stones at Savin 

 Bock, near New Haven, May 5. Its body was completely filled, from 

 one end to the other, with comparatively large yellowish white eggs, 

 which show through the transparent integument of the dorsal side very 

 distinctly. 



Travisia carnea Yerill, sp. nov. (p. 508.) 



Body with twenty-four setigerous segments, oblong or fusiform, very 

 changeable, round, usually tapering abruptly to each end. Head small, 

 conical, acute; posterior end terminated by a small, bluntly rounded, 

 or slightly clavate papilla; setae small and slender. Branchiae short, 

 slender, commencing on the third setigerous segment and ceasing at 

 the twentieth ; longest about one-fourth as long as the diameter of the 

 body. Segments of middle region tri-annulated. Color light red or 

 deep flesh-color ; branchiae bright red. 



Length, in extension, about 25 mm ; 3 mm to 4 mm in diameter. It can 

 contract to 12 mm or less in length. 



Off Gay Head, Martha's Vineyard, in 19 fathoms, soft mud. 



Ammotrypane fimbriata Yerrill, sp. nov. Plate XV, fig. 79. 



(p. 508.) 



Body elongated, slender, smooth, thickest in advance of the middle, 

 tapering gradually to both ends, convex, and well rounded above ; 

 lower surface with a median sulcus and rounded margins, separated 

 from the upper surface by a deep groove. Head very aeute. Byes 

 two, small, black. Proboscis small, sub-globular, smooth. Branchiae 

 long and slender. Caudal appendage spoon-shaped, deeply concave, 

 transversely striated ; the outer margin fringed with a row of small, 

 slender papillae; a pair of slender cirriform processes, about half its 

 length, arises at its ventral base, and a longer single median one is 

 generally concealed in its cavity. Setae of the anterior segments long 

 and slender, more than half the diameter of the body, shorter farther 

 back. Color, when living, purplish flesh-color, shining and iridescent 



