486 



BULLETIN (IF THE BUREAU OF FISHERIES. 



of equal length and about as broad as long; third joint nearly as long as first and second; last joint 

 claw-like, strongly incurved, inner margin pectinated troni verj near base to tip, spines decreasing in 

 length distally; first gnathopods with coxa! plates reduced; basal joint with a few slender spines on 

 anterior margin; merus rounded below, where it is furnished with four spine-like seta- and several 

 much shorter setee; carpus produced posteriorly into a small rounded lobe, which has about three 

 large, spine-like setae at its distal end: hand nearly twice as long as wide; palm very oblique and 

 minutely pectinated like inner margin of dactyl; second gnathopods larger than first, coxal plate large, 

 oval in outline with one side flattened; basal joint more or less sigmoid; merus produced below- into 

 an acute angle; carpus with a narrow, distally rounded posterior lobe which bears numerous short, 

 stiff setae and three large setse at the tip; hand widest across distal end of palm; palm oblique, only 

 slightly curved, not pectinated, distal end armed with two or three pairs of spines; perseopods of sub- 

 equal length, posterior pairs with basal joints considerably expanded, and merus rather broad and 

 produced downward at postero-inferior angle; dactyls of all peneopods large; first uropods long and 

 slender with lanceolate rami subequal and nearly equal to peduncle; outer ramus of second uropods 

 markedly shorter than inner; the single ramus of terminal uropods about as long as peduncle; basal 

 division a little shorter than conical terminal one and armed with a spine at distal end of upper 

 margin; peduncle with a spine above near middle and a spine at distal end; telson flattened, oblong, 

 pointed, entire, with three small spines near lateral margins. 



Found upon piles and among seaweed at Woods Hole. 



Pellucid, marked with scattered reddish-brown spots. A reddish-brown band across end of 

 abdomen. Thorax in some specimens crossed with red bands. Eyes bright red. 



Length, about 2\ mm. Type No. 2t)L>-U>, V. S. Nat. Mus. 



Leucothoe spinicarpa Abildgaard. 



Leucotho\ grandimanus Stimpson, MarineJnvert. Grand Manan, p. 51, 1853. Bate, Cat. Amphlp. British Mus. p. 157, pi. 

 xxix, fig I. 1862. 



Rostrum very short ami obtuse; eyes broadly oval, red; antennae of subequal length and less 

 than half as long as body: peduncle of first antenna- with first joint about as long as second and pro- 

 duced into small acute lobe at distal end of lower side; 

 third joint not a fourth as long as second; tlagelhnn 

 scarcely two-thirds length of peduncle and composed 

 of about Hi joints; second antenna- with last joint of 

 peduncle shorter than preceding one but a little longer 

 than flagellum; first four coxal plates a little deeper 

 than their segments, tin- first produced forward and 

 rounded or truncated in front; carpus of first gnath- 

 opods produced into a slender, tapering process which 

 is as long as propodus and is upturned at its distal 

 end; propodus of nearly same width throughout, mi- 

 nutely serrated below, and furnished with a series of 

 evenly spaced curved seta-; dactyl slender, curved, 

 and between one-third and one-half length of propo- 

 dus; second gnathopods with the carpal process ex- 

 tending as far as palm; hand large, especially in the male; oval in outline, with a sharp process above 

 base of dactyl; palm minutely denticulated or serrulate; postero-lateral angle of third abdominal 

 segment produced into a small tooth; telson narrow, elongate, acuminate. 

 Length, 15 mm. 



Antic legions: east side of the Atlantic from Norway to the Mediterranean and the Azores; 

 Greenland (Hansen); Grand Manan (Stimpson). 



A specimen examined from Grand Manan, the type locality of Stimpson's /.. grandimana, was 

 found to agree perfectly with the description and figures of spinicarpa given in Sars's Crustacea of 

 Norway. 1 have also compared this specimen with several specimens of spinicarpa received from 

 i Ireat Britain through the kindness of the Rev. T. R. R. Stebbing. 



Leucoihot spinicarpa, female. Grand Manan. 



U 



