480 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



This species is represented by two female specimens, of wliicli one was 

 taken with Caprella on the tangles in 20 fathoms, rocky bottom, East- 

 port Harbor, by the United States Fish Commission, August 9, 1872 j 

 the other is simply labeled "Eastport Harbor, 1870." 



This species is very similar to the last, and a larger number of speci- 

 mens may show them to be identical. The specimens described pre- 

 sent, however, well-marked differences, particularly in the shape and 

 armature of the antennae, the shape of the rostrum, abdomen, etc. 

 Though not agreeing perfectly with Kroyer's figures of P. discoidea, 

 there can be little doubt of the identity of our species with it. 



Specimens examined. 



Phoxichilidium Milne Edwards. 



Body slender ; neck .short, Eostrum cylindrical, rounded. Anten- 

 nce three-jointed, chelate. Palpi wanting. Accessory legs five-jointed, 

 absent in the female. Legs slender ; dactylus with auxiliary claws. 



PhoxichiHdiuin maxillare Stimxison. 



Fhoxichtlidinm wrtX(7?areStimpsou, Invertebrata of Graud Manan, p. 37, 18.53. — 



Wilson, Tran.s. Conu. Acad., vol. v, p. 12, PI. IV, figs, la to 1 e, July, 1878, 

 FhoxichiJidium minor Wilson, o}). cit., p. 13, PI, IV, figs. 2 a to 2 ft, July, 1878. 



Plate III, Figures 12 to 15, 



Body rather stout. Oculiferous segment twice as broad as long. 

 Oculiferous tubercle j)rominent, acute. Eyes ovate, nearly white in 

 alcohol. Posterior segment much smaller and narrower than the next 

 anterior. Abdomen small and rounded. 



Eostrum stout, usually about as long as the oculiferous segment 

 though the length is somewhat variable, nearly cylindrical, rounded at 

 the extremity. It is sometimes slightly constricted a short distance 

 from the tip ; in other cases no such constriction is apparent, and the 

 outline of the lateral margins may be slightly convex (P. " minor^^). 



Antennie stout, almost destitute of hairs. Claws of the chelae very 

 strongly curved, quite smooth on the opposable margins ; the dactylus 

 projects somewhat beyond the extremity of the preceding joint, and is 

 very thick and strong. 



Accessory legs nearly one-third as long as the legs; basal joint stouter 

 than the others; third joint longest; terminal joint strongly curved, 

 smoothly rounded at the tip, armed on each side with six or eight simple 

 spines directed backward, and below, with three or four stouter ohes ; 

 the other joints have a few scattered hairs. 



