170 PKOCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



lacking), 35™™ J breadth, including setse, IG™™; breadth of body alone, 

 gmm. lengxh of largest scales, 8™'" ; breadth, 5.5'°™. 



One specimen, in alcohol. Sable Island Bank, off Nova Scotia, Cap- 

 tain McPhee, schooner "Carl Schurz," November, 1878 (TJ. S. Fish 

 Commission). 



Autolytus oriiatus, sp. nov. 



A small, slender species. The female ibrm is easily distinguished by 

 the bright red color of the ova and embryos, showing conspicuously 

 through the pale yellowish integuments of the body, or incubatory sac. 

 The head is short, broad, slightly emarginate in front; eyes conspicuous, 

 lateral, rounded ; antennas nearly equal, the median one a little the lon- 

 gest ; lateral ones about twi(;e the length of the head. Dorsal cirri long, 

 slender, about equal to the diameter of the body. The three anterior 

 segments bear only short setoe, but fascicles of long setse commence on 

 the fourth ; these are nearly as long as the breadth of the body. Length, 

 about 5"'™. 



Vineyard Sound, at surface, July 13 and August 28, 1875. 



Another form, possibly the male of this species, was taken July 21. 

 This was bright green in color. The lateral antennse were of moderate 

 length, tapered, swollen at base ; odd median antenna and ujiper tenta- 

 cular ciiTi slender, very long, about equal to half the body. Dorsal cirri 

 long, more than half the diameter of tbe l)ody. Fascicles of long setae 

 commence on the fourth segment. 



Odontosyllis lucifera Veriill. 



EusylUs lucifera Verrill, Auier. Jour. Scieuce, vol. x, p. 39, 1875. 



An examination of the armature of the oesophagus of this species 

 shows that it belongs to the genus Odontosyllis. The chitinous rim is 

 somewhat horseshoe-shaped, the extremities often angular or tooth- 

 like, turning inward aud downward, while the opposite side bears a row 

 of about six small, sharp, incurved denticles. Anal cirri two, rather 

 long and slender, transversely lined. 



Pedophylax longiceps, sp. nov. 



A very slender species, allied to P. dispar Webster, but with much 

 longer head and jjalpi, and longer and stouter caudal cirri. The head 

 is nearly as long as broad, both the fi-ont and posterior edge a little 

 produced in the middle ; median antenna arising in advance of the cen- 

 ter of the head, swoUen toward the end, but with the tip acute, some- 

 what longer than the head, but scarcely reaching beyond the middle 

 of the palpi ; lateral antenna very small, papilliform, nearly in line 

 with the odd one. Ocelli four, the two pairs close together on the 

 head, the anterior just outside of the lateral antennae, the others just 

 behind them. Palpi very long, more than twice as long as the head, at 

 the base as broad as the head, slightly swollen, tapering gradually to 

 the narrow end, the sides nearly straight or slightly incurved, slightly 



