38 Smith and Harger — St. George's JBanks Dredging s. 



its scales, by the short, stout, strongly curved setae of the upper ra- 

 mus, and much longer, slender, fascicled settle of the lower ramus, 

 among which the upper ones have a strongly spinulose, slender, acu- 

 minate, terminal portion, with a nearly straight, split, or forceps-like, 

 slender tip, while the middle and lower ones have a short, cuspidate 

 terminal portion, with few large spinules, and naked acute tips. 



I am unable to find anything in the figures and description of the 

 species recently described by Mcintosh to indicate that it is distinct 

 from the present species, with which, however, he has not compared it. 



Near Saint George's Bank, 150 fathoms, mud (locality s). Gulf of 

 Saint Lawrence, 110 fathoms (Whiteaves, t. Mcintosh). — A. E. V. 



Nephthys circinata Verriii, sp. nov. 



Body slender, elongated, ratlier depressed, tapering gradually pos- 

 teriorly. Head sub-pentagonal, rather broader than long ; a pair of 

 short, tapering antennae at the anterior angles, about one-fourth as 

 long as the width of the anterior border of the head ; another pair of 

 longer, slender, tapering antenna; at the lateral angles ; tentacular 

 cirri long and tapering. Proboscis smooth towai'd the base ; its dis- 

 tal portion with rows of slender acute papillae, which increase rapidly 

 in length toward the end, where they become very prominent. 



The lateral appendages, including the setae, are as long as the 

 breadth of the body ; the setae are very numerous, long and slender. 

 The caudal cirrus is long and slender, tapering to a slender tip. 

 Length of body, 50'"'"; diameter, 2-5'"'" ; diameter, including append- 

 ages, 5'"'". 



The lateral appendages of the middle region are moderately long, 

 the rami separated by a space scarcely equal to half their height. 

 Superior ramus, with a short, broad ovate, obtuse, or slightly acumi- 

 nate upper lamella, directed outward, and considerably exceeding the 

 setigerous lobe, and a much smaller ovate median lamella ; branchial 

 cirrus long, rather slender, tapered, curved downward and inward (cir- 

 cinate), forming rather more than a complete whorl ; the appendage at 

 its base, on the anterior segments, is short and broad, subtruncate dis- 

 tally, and with a small papilliform process projecting downward from 

 its lower angle, nearly in contact with the branchial cirrus ; on the 

 median segments it is broad and long-ovate, unequally acuminate, 

 leaf-like. The lower ramus has a very long and wide ligulate lamella, 

 directed obliquely upward and outward, usually more than twice as 

 long as the setigerous lobe, and about equal to it in width ; its lower 

 edo-e at about the middle is sometimes incurved, and its tip is acumi- 

 nate and blunt-pointed ; the ventral cirrus is slender and tapered. 



