450 Smith and Verrilli—Dredgings in Lake Superior. 
about one-sixth the diameter of the body. The lateral fascicles 
contain three to five somewhat shorter and straighter simple 
sete. One specimen appeared to have four minute ocelli upon 
the upper side of the head. 
Of Doppae Harbor, 17 fathoms, sand ; off Simmon’s Harbor, 
60 fathoms; and on the line from the Slate Islands toward 
Stannard Rock, fourth haul, 159 fathoms. 
Senuris 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. Setze in four fascicles upon each segment, 
six to eight in each fascicle anteriorly, four or five eect” 
The setae in all the fascicles are relatively long, slen |‘ 
and acute. Two tortuous red blood vessels pass along the in- 
testine, forming a loop at each segment. Intestine moniliform. 
On the line between the Slate Islands and Stannard Rock, 
moniliform. Anus terminal, large. 
Chirodrillus larviformis Verrill, sp. nov. Body rather short 
and not very slender, cylindrical, obtuse at both ends, distinetly 
annulated, composed of about 88 rings. Length about ‘30 of 
an inch; diameter ‘05. Cephalic lobe short, conical, obtuse, 
mouth large, semi-circular beneath. Ventral fascicles of sete 
near together, with about five sete, which are rather short, 
simple, acute, little curved; lateral fascicles with five or SIX 
setz of similar form and size; sub-dorsal ones similar. op 
preserved in alcohol, the body is usually curved ventrally or 9 
a simple coil. Color, when living, translucent whitish, intestine 
slightly greenish. A thickened smooth zone commences benin 
the 10th setigerous ring, occupying the space of about four 
segments. 
__ Off Copper Harbor, 17 fathoms, sand; off Simmon’s Harbor, 
59 fathoms, clayey mud. le 
Chirodrillus abyssorum Verrill, sp. nov. Sub-cylindrical, 
thicker anteriorly, distinctly annulated, com of about 42 
segments. Length 25 of an inch: Giameter about 02. Cephalic 
lobe short, conical, obtuse, mouth large, semi-circular. Ventral 
fascicles with eight or nine sete anteriorly, five or six posteriorly. 
_ The sete are long, slender, acute, strongly curved, those on the 
_ inferior side of the fascicles nearly twice as long as those of the 
upper side; setz of the lateral fascicles five or six, slender, 
-nearl a ly as long as those of the ventral ones, and similar in form; 
