Samuris abt/ssicola Verrill, sp. nov. — Worm slender, attenuated posteriorly, about .30 

 inch long, .03 in diameter anteriorly. Body composed of about 28 segments ; those of 

 the posterior half elongated; those of the anterior half shorter, separated by slight 

 constrictions. Cephalic lobe short, subcorneal, rounded in front. Mouth large, semi- 

 circular. Intestine slender, moniliform, containing sand. Anus terminal, with three 

 or four slight lobes. Seta} in four fan-shaped fascicles on each segment, commencing 

 at second segment behind the mouth. The two ventral fascicles are separated by a 

 space equal to about twice the length of the setae, of which there are five or six in 

 each fascicle; the setas are simple, acute, slightly curved, equal to about one-sixth 

 the diameter of the body. The lateral fascicles contain three to five somewhat shorter 

 and straighter simple setae. One specimen appeared to have four minute ocelli upon 

 the upper side of the head. 



Off Copper Harbor, 17 fathoms, sand ; off Simmons's Harbor, 60 fathoms ; and on the 

 line from the Slate Islands toward Stannard Eock, fourth haul, 159 fathoms. 



Sainuris limicola Verrill, sp. nov. — Worm more slender than the preceding, attenuated 

 posteriorly, composed of about 44 segments. Length about .33 of an inch, diameter 

 .02. Cephalic lobe blunt, conical. Setae in four fascicles upon each segment, six to 

 eight in each fascicle anteriorly, four or five posteriorly. The setae in all the fascicles 

 are relatively long, slender, curved, and acute. Two tortuous, red blood-vessels pass 

 along the intestiue, forming a loop at each segment. Intestine moniliform. 



On the line between the Slate Islands and Stannard Eock, fourth haul, 159 fathoms. 



Chirodrillus, gen. nov. — Allied to Samuris, but with six fan-shaped fascicles of setae 

 upon each segment ; two of which are ventral, two lateral, and two sub-dorsal. Setae 

 in the ventral and lateral fascicles five to nine, simple, acute, slender, often curved 

 like an italic/; those of the upper fascicles stouter and less curved, three to six in 

 each fascicle. Intestine wide, souiewhat moniliform. Anus terminal, large. 



Chirodrillus larviformis Verrill, sp. nov. — Body rather short and not very slender 

 cylindrical, obtuse at both ends, distinctly annnlated, composed of about 38 rings. 

 Length about .30 of an inch ; diameter .05. Cephalic lobe short, conical, obtuse, mouth 

 large, semicircular beneath. Ventral fascicles of setae near together, with about five 

 setae, which are rather short, simple, acute, little curved; lateral fascicles anteriorly 

 with five or six setae of similar form and size ; upper ones similar. When preserved in 

 alcohol the body is usually curved ventrally or in a simple coil. Color, when living, 

 translucent, whitish ; intestine slightly greenish. 



Off Copper Harbor, 17 fathoms, sand ; off Simmons's Harbor, 60 fathoms, clayey mud. 



Chirodrillus abyssorum Verrill, sp. nov. — Subcylindrical, thicker anteriorly, distinctly 

 annulated, composed of about 42 segments. Length .25 of an inch ; diameter about .02. 

 Cephalic lobe short, conical, obtuse, mouth large, semicircular. Ventral fascicles with 

 eight or nine setae anteriorly, five or six posteriorly. The setae are long, slender, acute, 

 strongly curved, those on the inferior side of the fascicles nearly twice as long as those 

 of the upper side ; setae of the lateral fascicles five or six, slender, nearly as long as those 

 of the ventral ones, and similar in form ; sub-dorsal fascicles with four or five shorter, 

 stouter, and straighter acute setae. 



Six miles southeast of Passage Island, 47 fathoms ; on line from the Slate Islands 

 toward Stannard Eock, fourth haul, 159 fathoms. 



Tubifex profundicola Verrill, sp. nov. — A rather stout species for the genus, about 1 to 

 1.5 inches long, .05 in diameter anteriorly, more slender posteriorly (.02 in diameter.) 

 Cephalic lobe short, conical ; one specimen apparently had two minute ocelli. Mouth 

 large, semicircular. Intestine moniliform, with two simple red blood-vessels running 

 along its whole length and uniting at the constrictions. In the first five or six segments 

 there are slender vessels of nearly uniform size, which form lateral loops in each seg- 

 ment. Anus terminal, wide, with about ten small lobes. Setae in four fascicles upon 

 each segment. Those of the lateral fascicles three, anteriorly often but two, short, 

 slightly curved, mostly with minute, forked, and hooked tips ; those of the ventral 

 series in fascicles of four to six, three or four times longer than the upper ones, con- 

 siderably bent, the ends minutely hooked and forked. 



Neepigon Bay, 32 fathoms. 



Bdeelodea, (Leeches.) 



Nephelis fervida Verrill, sp. nov. — Leech two or three inches long, .20 to .30 wide, elon 

 gated and slender in full extension, very little depressed, most so posteriorly ; often round 

 and tapering anteriorly. Mouth large, nearly circular, subterminal, the upper lip, in 

 contraction, short and rounded, corrugated within the oesophagus with three conspicu- 

 ous folds ; eyes eight, blackish, conspicuous, two pairs, a little apart, on the first ripg 

 of the head ; two pairs, wider apart and farther hack, on the third ring. Color bright 

 brick, red when living. In 8 to 13 fathoms, south side of St. Iguace. 



A small specimen, probably the young of this species, taken in 13 to 15 fathoms, in 

 Simmons's Harbor, was translucent, tiuged with flesh-color, with a dark brown intes- 

 tinal line posteriorly. 



Nephelis lateralis Verrill, (Rirudo lateralis Say.) — A small specimen, about 1 inch in 



