698 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



fascicles contain three to five somewhat shorter aud straighter simple 

 sette. One specimen appeared to have four minute ocelli upon the up- 

 per side of the head. 



Dredged off Copper Harbor, 17 fathoms, sand; off Simmons' Harbor, 

 60 fathoms; aud on the line from the Slate Islands toward Stannard 

 Rock, fourth haul, 159 fathoms. 



S^NURis LIMICOLA Verrill. 



American Journal of Science, 3tl series, vol. ii, p. 450, 1871; and Preliminary Re- 

 port on Dredging in Lake Sujierior, p. 1024, 1871. 



Worm more slender than the preceding, attenuated posteriorly, 

 composed of about 44 segments. Length about 8™", diameter 0'"'".4. 

 Cephalic lobe blunt, conical. Setce in four fascicles upon each segment, 

 six to eight in each fascicle anteriorly, four or five posteriorly. The 

 setai in all the fascicles are relatively long, slender, curved, and acute. 

 Two tortuous red blood-vessels pass along the intestine, forming a loop 

 at each segment. Intestine moniliform. 



Dredged on the line between the Slate Islands and Stannard Eock, 

 fourth haul, 159 fathoms. 



Chirodrillits Verrill. 



Allied to Sccmiris, but with six fan-shajjed fascicles of set.ie upon each 

 segment, two of which are ventral, two lateral, and two subdorsal; setse 

 in the ventral and lateral fascicles four to nine, simple, acute, slender, 

 curved like an italic /; those of the dorsal fascicles stouter and less 

 curved, three to six in each fascicle. Intestine wide, somewhat monili- 

 form. Anus terminal, large. 



Chirodrillus LARViFORMis Verrill. 



American Journal of Science, 3d series, vol. ii, p. 450, 1871 ; and Preliminary Re- 

 poft on Dredging in Lake Superior, p. 1024, 1871. 



■^^ Body rather short and not very slender, cylindrical, obtuse at both 

 ends, distinctly annulated, composed of about 33 rings. Length about 

 7;^™.5; diameter, 1'"'". 25. Cephalic lobe short, conical, obtuse; mouth 

 large, semicircular beneath. Ventral fascicles of setse near together, 

 with about five setne, which are rather short, simple, acute, little 

 curved ; lateral fascicles with five or six setse of similar form and size ; 

 subdorsal 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. A thickened smooth zone com- 

 mences behind the tenth setigerous ring, occupying the space of about 

 four segments. 



Off Copper Harbor, 17 fathoms, sand ; off Simmons' Harbor, 59 fath- 

 oms, clayey mud. 



Chirodrillus abyssorum Verrill. 



American Journal of Science, 3d series, vol. ii, p. 450, 1871; and Preliminary 

 Report on Dredging in Lake Superior, p. 1024, 1871. 



