INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 595 



two or three of the spatulate books; the latter are about half as long as 

 the former, slender toward the base, but gradually beconiing broader 

 toward the end, which is twice as broad, obtusely rounded, aud 

 curved back from about the middle ; the hooks are nearly terminal on 

 one side, the thin margin projecting beyond them. The basal lobe of 

 the "feet" is very small; the posterior lobe is small but prominent. 

 Color light red to daik red, somewhat iridescent. 



Length up to 350'"'" ; diameter, 0.05""" to l'""\ 



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



NiNOE NIGRIPES Vcrrill, sp. nov. (p. 50S.) 



Body elongated, slender, broadest a short distance behind the head, 

 at the middle of the branchiferous segments. Head depressed, elongated, 

 conical, blunt at end, about twice as long as broad. The brauchioe are 

 represented on the first two setigerous segments by a short,'£lattened 

 lobe, arising from the outer and jiosterior face of the setigerous lobe. 

 On the two following segments the lobe is divided into two or three 

 j)arts ; on the fifth there are usually three, more elongated, round, and 

 more slender branchiae, which increase in number and length on the suc- 

 cee<ling segments until there are five, six, or more long, slender branchial 

 filaments, which arise from the posterior face of the setigerous lobe, and 

 diverge, forming a somewhat fan-shaped or digitate group ; about the 

 twenty-fourth segment the number rapidly diminishes, and after the 

 twenty-seventh or twenty-eighth there remains but one small branchial 

 process. The setigerous lobe is prominent, obtuse, turned forward. The 

 setai are numerous on the branchial segments, and rather long, of various 

 shapes, but mostly bent, with an acute lanceolate point ; posteriorly they 

 are shorter and fewer, and mostly slender, margined sette, with hooks at 

 the spatulate end. Body flesh-color ; the settTS dark, often blackish ; 

 branchiae bright red. 



Length of broken specimens, 20'""' ; breadth anteriorly, 2""". 



Vineyard Sound and Buzzard's Bay, aud waters outside; in 8 to 29 

 fathoms, mud. 



Staurocephalus pallidus Verrill, sp. nov. (p. 348.) 



Body rather slender, convex above, flattened below, largest in the 

 middle, tapering slightly toward each end, composed of about seventy seg- 

 ments. Head small, depressed, rounded in front; antennae four, slen- 

 der, longer than the breadth of body, the two upper ones longer and more 

 slender than the lower ones, strongly annulated or beaded; lower ones 

 stouter, smooth, tapering. Eyes four, dark red; the posterior pair very 

 small, placed between the bases of the upper antennae; the anterior pair 

 farther apart, placed between the bases of the upper and lower antennae. 

 Anal cirri four, the upper i)air slender and about twice as long as the lower 

 ones. Dorsal cirri elongated, slender, more than twice as long as the 

 setigerous lobe, absent on the first setigerous segment, very small on the 



