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



short and iiuirked 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 wide as carpus but scarcely as long, 

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

 angle ; dactyl provided with several short setje 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 setae. 



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 antennee at the base of the set£e, 

 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 toHatteras, Vineyard Sound (Smith), 

 "in tubes, in masses of a compound ascidian {Amourouckim 

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



