126 Thirty-second Report on the State Museum. 



which are continued as impressed lines for some distance, on both the outer and 

 inner surface of the membrane ; superior emargination broad but shallow. 



First segment a little longer than the second, about equal to the sixth ; 

 second, third and fourth equal ; fifth a little shorter ; segments six to ten grow 

 progressively longer, but so gradually that the change is hardly perceptible ; 

 eleven to thirteen also gain in length progressively, but rapidly, the thirteenth 

 having double the length of the tenth ; fourteenth, fifteenth and sixteenth about 

 equal to the tenth ; seventeenth and eighteenth short, equal, together about 

 equal to the sixteenth, a trifle longer than the anal. 



Diameter of first segment a little less than that of the second ; uniform from 

 second to tenth inclusive ; falling off about one-third et the eleventh, after which 

 the decrease is very slight. 



One ante-anal nude segment (fig. 64) with thickened, rounded, posterior 

 margin, forming a collar around the front end of the anal segment. 



Anal segment with numerous, short, unequal cirri or digitations, quite similar 

 to Clymenella torquata Verrill, or Praxilla elongata Webster. 



The dorsal (capillary) setas (fig. 65) are long, delicate, numerous, with a 

 single thin margin. The uncini have the same form on all the segments (fig. 

 66) ; they have five sharp terminal teeth, of which three are small and equal ; 

 the fourth longer and larger than the third ; the fifth, double the size of the 

 fourth. On the first three segments there are from fifteen to twenty uncini in 

 each series ; after the third, from twenty to twenty-five, except on a few of the 

 posterior segments, where there is a smaller number. The first five segments 

 have the setae on the middle line, and a deeply impressed ventral line connects 

 the series of uncini on each segment. After the fifth segment the setae are near 

 the posterior end, and after the tenth the dorsal rami (tori uncinigeri) are quite 

 large, making the segments somewhat club-shaped. 



Number of segments, 19; of these 17 are setigerous; one ante-anal, nude; 

 one anal. 



Color (in alcohol) yellowish-white ; on one specimen broad bands of umber- 

 brown cross the ventral surface, dividing at the uncini, giving a narrow band 

 on eacn side of each series of uncini after the fifth. 



At Great Egg Harbor we obtained two specimens, both of which had lost 

 their posterior segments. The longest has fifteen segments, with a length of 

 65 mm ; greatest diameter 3 mm . The description was completed from a single 

 perfect specimen, collected by Mr. James E. Benedict at South Norwalk, Conn., 

 during the same summer. 



Length of entire specimen, 46 mm ; greatest diameter, 3 mm . 



Found at low water in sand, associated with Clymenella torquata Veriull. 



Fain. HERMELLID.E. 



SABELLARIA Lamarck. 



Sabellaria varians Webster. 



Annel. Chaet. of the Virginian Coast, p. 259, pi. ix, figs. 133-136 ; pi. x, figs. 



137-139. 1879. 

 Prof. Verrill has described a species of Sabellaria (S. vulgaris) from 

 Great Egg Harbor, and in the proceedings of the Academy of Natural Sciences 



