Annelida of the Bermudas. 645 



next two segments and longer than the head. The parapodia on 

 the anterior half of the body are rather long and prominent, with 

 long capillary setae, but back of the branchial region they become 

 small and but little elevated, with a minute papilliforra dorsal cirrus. 



The larger branchiae have 4 or 5 long slender cirri ; they begin on 

 the 3d or 4th segment with two small cirri, and increase to 3 cirri 

 on the 8th and to 4 at about the 14tb ; those from the 24th to 28th 

 often have 5 cirri. They begin to rapidly decrease at about the 

 30th and cease at about the 45th to 50th segment. 



The capillary setae anteriorly are 3 or 4, not very long, becoming 

 4 to 6 and longer, farther back ; compound setae are about 6 ante- 

 riorly, and 4 posteriorly ; the uncinate setae are strongly recurved at 

 the neck ; the end is tridentate, the tip is divided into two small 

 slightly incurved denticles, and the hook on the inside is sharply 

 angular, longer than the terminal part. 



The color in formalin is pearly white and iridescent, sometimes 

 with slight darker bands or rows of spots across the anterior seg- 

 ments and with dusky annulations on the antennae. 



Length, 35 to 50™™ ; diameter, 1.5™™. 



Flatt's Inlet, low-tide to 10 feet, in shell sand, common. 



Lysidice bilobata, sp. nov. 



The head has two evenly rounded lobes in front, separated by a 

 deep notch. The buccal segment is twice as long as the next, and 

 about equal to the head. The three antennae are about equal, and 

 about as long as the head, scarcely tapered, blunt. The eyes are 

 small, black. 



The parapodia are small with papilliform dorsal and ventral cirri. 

 On the anterior segments, the compound setas are about 6, with stout 

 distal enlargements and small, short blades, minutely bidentate at 

 the extreme tip, and with a tooth on the inside edge, near the base. 

 The capillary setae are much longer, usually 4 or 5, considerably 

 bent and flattened, with a long acuminate tip. The 2 or 3 brush- 

 shaped setae are rather small, and the rapidly enlarged end has 

 about 10 slender denticles, the marginal ones only slightly longer. 

 There is one, or sometimes two, black spiniform acicula and a black 

 uncinate seta of about the same size, having the end slightly bifid 

 and a little bent, but not limbate ; the bidentation is at the extreme 

 tip ; the lateral tooth is slightly the larger and is directed obliquely 

 distally. 



