470 EEPOET OF COMMISSIONER OF FISH AND FISHEEIES. 



Oculiferons tubercle prominent, broad and rounded. Eyes black 

 widely separated, remarkably small. Abdomen slender, decidedly 

 clavate, truncated at the extremity. Eostrum large, slender, basal half 

 slightly swollen, outer portion attenuated, truncated at the tip. There 

 is a slight constriction near the middle and another near the extremity, 

 which give it a distinctly sinuous outline. 



Accessory legs very small and slender, coujposed of nearly equal 

 short articulations, the first five of which are somewhat shorter than 

 the others; the terminal joint is pointed and slightly curved; the outer 

 joints bear a few small stout spines. 



Legs very stout; the three basal joints are short and thick, the first 

 with two or three obtuse i^rominences above ; fourth about twice the 

 second, with one or two prominent tubercles at the distal extremity 

 above; fifth similar, but not so much produced dis tally; seventh joint 

 or tarsus very short and nearly triangular ; eighth (propodus) narrow, 

 somewhat curved ; dactylus nearly half as long as the propoduS; very 

 stout. 



Many of the joints bear very short hairs, which are densely set on 

 the inferior side of the tarsus and i^ropodns. The entire surface of the 

 animal is covered with very small rounded tubercles, which give it a 

 scabrous appearance. Color light yellowish brown to dark brown, the 

 legs often blackish near their extremity. 



Length 16 millimeters ; extent 38 millimeters.* 



This species has a wide range. Phillippi records it from jSTai^les, and 

 it appears to be common along the whole northern coast of Europe. 

 l!iricolet described and figured a form from Chili which is certainly very 

 closely allied to, if not identical with, ours, and Mr. Henry H. Sclater 

 informs me that he has received specimens of a variety of this species 

 from Japan. Dr. Bohm reports a single specimen from Kerguelen 

 Island. On our coast it ranges, so far as now known, from Long 

 Island Sound to the Gulf of St. Lawrence {Whiteaves), though its occur- 

 rence south of Cape Cod is exceptional. In the Bay of Fundy it is 

 not uncommon under stones at low- water mark, and it extends down 

 to 430 fathoms. It is sometimes found clinging to actinias; at East- 

 port, Me., 17 specimens were taken from Bunodcs stella, growing on the 

 rocks near low- water mark ; and off Cape Sable, N. S., they were found 

 in considerable numbers attached to the base of BoJocera Tuedicv. 



A comparison of specimens from the Gulf of Maine and from East- 

 port, Me., with specimens from Valentia, Ireland, received by the mu- 

 seum of Yale College from the Eev. A. M. JiTorman, leaves no doubt of 

 their identity. Stimpson's P. pelagicum is evidently only the immature 

 form. 



In my " Syuopais" (/. c.) reference was made to Dr. Hoek's observation of the pres- 

 ence of accessory logs in the male and their absence in the female of this species. As 



* The length includes the rostrum and abdomen. The extent is the distance from 

 tip to tip of the outstretched legs. 



