1902.] NATURAL SCIENCES OP PHILADELPHIA. 269 



fine, except at the base. The number of rows varies from nineteen 

 on the most ventral setse to twenty-four or twenty-five on the middle 

 and thirty-one on the most dorsal. The neuropodial setae are 

 arranged in numerous rows, there being at least twelve subacicular 

 and six supraacicular series. 



The notopodial setae (PI. XIV, figs. 35, 36) are also rather long 

 and slender, gently and regularly curved and tapering to the rather 

 acute points. As usual in Lagisca, the rows of spines are long, 

 numerous and close, the spines themselves being fine and a few in 

 (he middle of each row enlarged. 



The neuropodial set re of II differ very little from the normal types 

 in typical parapodia, except for their smaller size and longer spines. 

 I bears no neuropodials, and in the specimen examined only two 

 nolopodials, which have the characteristic form. 



The elytra are pale mottled brown, the sette all a pale but glisten- 

 ing hay color. The dorsum of the body is light brown, with a 

 yellowish line across the anterior end of each somite and the ante- 

 rior somites each with a median spot of dark brown. The bases of 

 the parapodia are pale yellowish, the cirri white with dark rings 

 above and below the enlargement. The head is light-colored and 

 iridescent with brown cloudings, the base of the tentacles choco- 

 late color, and the palps buff. The under surface of the body is 

 pale and iridescent. 



One specimen. McCormick Bay, P. R. E. 



Lagisca rarispina (Sars) Malmg. 



The anterior pair of eyes is borne on the anterior face of 

 prominently outstanding lobes, which give to the head a very char- 

 acteristic form not shown in any of the published figures. These 

 ocular lobes are situated slightly posterior to the middle of the 

 head, which is very much narrower anterior than posterior of them. 

 A specimen 12 mm. long has only seven somites posterior to the 

 last elytra pho re, whereas one of 43 mm. has fifteen. 



McCormick Bay, Dr. Benjamin Sharp ; Northumberland Island, 

 O. 11, 10-15 fath. ; Olridir Bay, O. 29 and 49, 7-25 fatli. 



Actinoe sarsi Kinb. 



McCormick Bay, P. R. E. ; Granville Bay, O. 39, 30-40 fath. ; 

 Olridir Bay, O. 49, 15-20 fath. 



