[595] INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 301 
two or three of the spatulate hooks; the latter are about half as long as 
the former, slender toward the base, but gradually becoming broader 
toward the end, which is twice as broad, obtusely rounded, and 
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 dark red, somewhat iridescent. 
Length up to 350™™; dieneeten 0.05™™ to 1, 
Great Egg Harbor, Now Jersey, to New Haven and Vineyard Seay, ‘ 
NINOE NIGRIPES Verrill, sp. nov. (p. 508.) 
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 branchize are 
represented on the first two setigerous segments by a short, flattened 
lobe, arising from the outer and posterior face of the setigerous lobe. 
On the two following segments the lobe is divided into two or three 
parts; on the fifth there are usually three, more elongated, round, and 
more slender branchiz, which increase in number and length on the sue- 
ceeding 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 
sete 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 sets, with hooks at 
the spatulate end. Body flesh-color; the sete dark, often blackish ; 
branchiex bright red. , 
Length of broken specimens, 20"; breadth anteriorly, 2"". 
Vineyard Sound and Buzzard’s Bois and 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; antenne 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 antenn; the anterior pair 
farther apart, placed between the bases of the upper and lower antenne. 
Anal cirri four, the upper pair 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 
