8o CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



peduncle not much longer than broad ; flagellum of about six 

 joints. 



First gnathopods simple; basal joint long and slender with 

 short setse on outer margin ; merus widened and rounded distally 

 with distal half of posterior margin provided with short setae 

 and two pectinate spines; carpus shorter than propodus and of 

 uniform diameter; propodus slightly tapering. Second gnatho- 

 pods larger than first, with well developed oval coxal plate ; basal 

 joint slightly longer than that of first pair; merus broader at 

 distal than at proximal end and with hind margin much longer 

 than anterior one ; carpus broader than long and with a narrow 

 rounded lobe bearing a few pectinate spines projecting posteriorly 

 farther than preceding joint ; propodus oblong, widest behind the 

 palm which is quite oblique and bears a stout spine near hind 

 margin. 



First pereiopods with well developed oval coxal plate as large 

 as that of second gnathopod. Coxal plate of next pereiopod 

 enormous, equalling the first six segments in length, oval in out- 

 line, much broader than deep. Coxal plates of succeeding pereio- 

 pods small and rounded. 



First uropods with peduncle nearly twice as long as the sub- 

 equal, lanceolate rami; second pair not reaching as far as the 

 first pair and with peduncle slightly longer than the subequal 

 lanceolate rami. Third pair with peduncle equal to the single 

 ramus which is composed of two unequal segments. Last two 

 abdominal segments fused. 



Telson entire, acute. 



Holmes states in his description that the coxal plate of the 

 first gnathopod is well developed and that of the first pereiopod 

 is small. This is evidently an error for in specimens from Long 

 Island Sound the condition is reversed, the coxal plate of the 

 first pereiopod being well developed and that of the first gnatho- 

 pod very small. 



I quote Holmes' description of the color and habits of the 

 species : 



" Body pellucid ; first segment more or less rose-colored above, 

 a row of rose-colored or sometimes brownish spots or bars along 

 middle of back; eyes rose-colored; joints of peduncle of antennae 

 yellowish at tip ; a dark bar across tip of abdomen and base of 



