606 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



Off Block Island, 29 ftithoins; off Buzzard's Bay, 25 fathoms, mud. 

 Great Egg Harbor (Leidy). 



Brada setosa Yerrill, sp. nov. (p. 508.) 



Body short, oblong, sub-cylindrical, flattened below, tapering a little 

 toward both ends, which are obtuse ; composed of seventeen setigerous 

 segments. Skin covered with small, prominent, acute papillae. Upper 

 fascicles of setse long, slender, light colored; lower fascicles larger, com- 

 posed of stouter, long, dark colored setse, surrounded at base by small 

 cirriform appendages. Ventral cirrus small. 



Length of preserved specimen, 10™^; diameter, 2.5^™. 



Off' Gay Head, 8_to 10 fathoms, among muscles, &c. 



Sternaspis fossor Stimpson, Plate XIY, fig. 74. (p. 507.) 



Marine luvertebrata of Grand Manan, p. 29, fig. 19, 1853. 



Off Gay Head, 19 fathoms, soft mud; common in the Bay of Fundy 

 in 10 to 90 fathoms, mud; near Saint George's Bank, 110 fathoms, 

 sandy mud ; Oasco Bay, 20 fathoms. 



OiRRATULUS aRANDis Yerrill, sp. nov. Plate XY, figs. 80, 81. (p. 319). 

 Body large and stout, anteriorly subcylindrical, somewhat flattened 

 and tapering slightly posteriorly, and rather abruptly tapered anteriorly. 

 Head small, acute, with obscure brownish spots above, but apparently 

 without distinct ocelli. Posterior end obtuse, the orifice surrounded by 

 a thickened, slightly crenulated border. Posterior to the mouth there 

 are about seven rather indistinct annuli (perhaps four biannulated 

 segments) destitute of appendages ; the two next segments bear two 

 fascicles of small setse on each side, and two crowded dorsal clusters of 

 long slender branchial cirri ; these clusters nearly meet on the dorsal 

 line, leaving only a narrow naked space, and contain a large numl^er of 

 cirri, usually of various lengths, closely crowded together. Farther 

 back the " feet'' consist of small and slightly prominent upper and lower 

 rami, connected by a slightly raised, transverse ridge ; each ramus bears 

 a small fascicle of short, slender, acute setae, in a transverse row ; and 

 a few stouter curved spinules, which project but little from the surface ; 

 posteriorly the spinules are more numerous and the slender setse fewer 

 and a little longer, but they are scarcely equal to one- tenth of the diam- 

 eter of the body. Along nearly the whole length of the body long 

 slender branchial cirri arise from above most of the upper rami, but 

 many of these are generally broken off in preserved specimens. In 

 alcohol the lower surface of the body is generally flat or concave ; the 

 ^'feet" occupy an elevated lateral ridge, often separated from both the 

 ventral and dorsal surface by a deep groove ; and the dorsal surface is 

 moderately convex. The annulations are short, very numerous, and 

 distinct. Color, when living, dull yellow, yellowish green, yellowish 

 orange, greenish orange to orange-brown, darkest anteriorly, and often 



