138 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



short and marked by two prominences ; dactyl stout and provided 

 with many minute blunt teeth. Second gnathopods longer and 

 more slender than first; carpus densely setose, triangular with 

 anterior margin strongly convex; propodus also densely setose, 

 rectangular and about as wade as carpus but scarcely as long, 

 palm short, transverse, convex with a spine at rounded posterior 

 angle ; dactyl provided with several short setse on concave margin. 



First two pereiopods with spinning glands and basal joints 

 long and narrow ; merus broadened distally and projecting beyond 

 the carpus which is equal in length to the propodus ; terminal 

 joint very slightly curved. Third, fourth, and fifth pereiopods 

 increasing successively in length ; second joints slender. 



Postero-lateral angles of first three abdominal segments 

 rounded. 



First pair of uropods slender, with rami equal to the peduncle 

 which bears a slender, curved projection nearly half as long as 

 rami; second uropods extending as far as first and of similar 

 form but with much shorter peduncle ; third uropods with rami 

 which are much longer than the peduncle and provided distally 

 with long slender spines ; peduncle without terminal prolongation. 

 Telson thick, rounded distally, wider than long and with several 

 long setse. 



Holmes describes the color as follows : " body and coxal 

 plates with blackish pigment, the fifth thoracic segment lighter 

 than the others ; abdomen lighter than thorax ; legs transparent 

 and almost devoid of pigment; body and appendages with a 

 diffuse reddish-brown coloration, which is deeper on the large 

 hand, becoming more intense toward the tip and on the base of 

 the dactyl ; dorsal side of body crossed with purple, orange, or 

 rose-colored bars; both pairs of antennae very beautifully and 

 conspicuously marked with spots of red, pink, or orange, these 

 spots on the peduncles of both antennae at the base of the setge, 

 on the flagellum of first antennae; they are regularly arranged, 

 a pair of oblong spots being separated by a colorless longitudinal 

 interval on each joint." 



Length 6 mm. 



Distribution : Cape Cod to Hatteras, Vineyard Sound (Smith), 

 " in tubes, in masses of a compound ascidian (Amoiiroiicium 

 pellucidimi) in 3-8 fathoms " (Verrill) ; Long Island Sound. 



