Annelida of the ^Bermudas. 617 



cirri are more unequal, but the larger ones are longer than those of 

 the anterior segments, composed of 18 or 19 annuli, and often exceed 

 the diameter of the body by \ of their length ; the shorter ones are 

 about f as long with 14 or 15 annuli. 



The setae of the anterior parapodia are numerous, long and slender, 

 with delicate narroAV-lanceolate blades, slightly bidentate at tip, the 

 upper ones longer, bi'eadth to length about 1 : 4 or 5, in the lower 

 ones about 1 : 3 or 4. In the anterior parapodia there are also 3 or 4 

 slender acute acicula, side by side, but usually not projecting. Pos- 

 teriorly the compound seta? become longer and slender, 7-9 in a 

 fascicle, with larger and shorter blades, ratio as 1 : 1^-2^, with the 

 tips strongly incurved and distinctly bidentate. These are accom- 

 panied by 2 or 3 stouter spiniform acicula, one of which usually has 

 the tip somewhat hook-shaped. 



In the type the segments, commencing somewhat forward of the 

 middle, from about the 33d segment, are crowded with ripe eggs, 

 which are polygonal from pressure. 



CEsophagus brown, rather long and large, occupying 7 segments, 

 cylindrical, with a short stout tooth near the margin ; edge divided 

 into about 10 rounded lobes or scallops, recurved when extended. 

 Soft pharynx with about 10 low, broad, rounded lobes. 



The stomach is light greenish, deeply pigmented, and opaque, 

 nearly \ as long as the oesophagus and more than twice as thick, 

 occupying 5 segments, somewhat barrel-shaped, or elliptical, wildest 

 posteriorly and covered with an alveolar arrangement of polygonal 

 glands sepai'ated by narrow dark lines so as to have a honey-comb- 

 like appearance externally, unlike that of other species. 



Color of the preserved specimens is plain yellowish-white. 



Length of type, about 24™™ (caudal segments gone) ; diameter 



gmm 



This appears to be a species that does not produce special sexual 

 zooids. The large size and form of the head ; the character of the 

 setoe ; and the alveolar surface of the stomach, are its most notable 

 diagnostic characters. It appears to be rare. 



Trypanosyllis tenella, sp. nov. 



A small, slender species, with long beaded cirri, which is doubt- 

 fully referred to this genus on account of the strongly denticulated 

 or scalloped margin of the oesophagus ; in most other respects it 

 closely resembles the young of Syllis corcdlicola and S. catenula^ 

 but it has a narrow stomach and the setje are more bidentate, at tip. 



