[611] ‘INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 317 
‘NOTOMASTUS FILIFORMIS Verrill, sp. nov. (p. 342.) 
Body very long and slender, filiform,-;composed of very numerous 
short segments. Head very changeable in form, usually long, conical, 
and very acutely pointed. Proboscis smooth, obovate, or trumpet- | 
shaped, when extended, and bright red. In the anterior region there 
are eleven setigerous segments, which bear small fascicles of slender 
setz in both rami, those in the first five longer and acutely pointed; 
these segments are short, biannulate; the lower fascicles of sete are 
largest and fan-shaped. In the middle region the segments are about 
as long as broad. Color, pale red to bright red, often mottled with 
whitish, and more or less yellowish posteriorly. 
Length, 100™™; diameter, 1™™. 
Great Egg Harbor, low-water to one fathom, in sandy mud; New 
Haven; Watch Hill; Vineyard Sound. 
SABELLARIA VULGARIS Verrill, sp. nov. Plate XVII, tigs. 88, 88a. 
(p. 321.) 
Body rather stout, thickest anteriorly, tapering backward to the base 
of the long, slender caudal appendage. ‘Two slender, red, oral tentacles 
arise near the mouth, between the bases of the operculigerous lobes, 
and, when extended, reach beyond the bases of the opercula. A single 
median lanceolate process also arises between the operculigerous lobes. 
A deep emargination exists on the ventral side, back of the mouth; on 
each side of this the front margin of the segment is prolonged into a 
tridentate lobe, the teeth or lobes being unequal, the inner ones largest, 
the middle ones more slender and acute, the outer one smallest and 
shortest; beyond these, toward the sides, there is another small acute 
‘process; two conical processes also project forward from the lateral 
margins, and also a fascicle of sete. The ciliated prehensile cirri, or 
tentacles, are long and slender when extended, and reach considerably 
beyond the opercula. The sete composing the opercula are golden yel- 
low; the outer circle white at base. A row of sinall conical papille 
surrounds the bases of the opercula. Branchie long, lanceolate, acute, 
longer than the diameter of the body. Color of body yellowish flesh- 
color, or pale reddish, often with two rows of brown spots along the 
ventral surface; operculigerous lobes whitish or grayish, specked with 
blackish; branchie reddish or yellowish, with a red central line, often 
with a greenish tinge, or red centered with green; tentacles pale flesh- 
color, sometimes purplish; opercula blackish or grayish on the anterior 
surface, golden yellow on the sides, white at base; caudal process pale 
red or flesh-color. ; 
Length about 25™, exclusive of caudal process; 2"™™ to 2.5™" in diam- 
eter. 
Great Egg Harbor, New Jersey, to New Haven and Vineyard Sound; 
low-water to ten fathoms; very common. Eggs are laid in May and 
June. 
