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



First antennae as long as head and first two thoracic segments 

 together; peduncle with second and third joints expanded distally 

 and together longer than the first joint, provided with numerous 

 plumose setae; accessory flagellum over half as long as principal 

 one which is scarcely as long as peduncle. Second antennae longer 

 than first and having the last two joints oi the peduncle greatly 

 dilated and with inferior margin strongly convex and provided 

 with abundant plumose setae, penultimate joint much longer than 

 last one and with a rounded distal lobe extending one-third as far 

 as .last segment ; flagellum shorter than peduncle and made up 

 of about ten segments. 



Body somewhat depressed. 



First four coxal plates increasing successively in size poste- 

 riorly, over twice as deep as corresponding body segments. First 

 three tapering below to rather obtuse points ; fourth one rounded 

 below and much larger than others. 



Gnathopods weak; first pair with carpus longer than propo- 

 dus and dactyl, and with posterior margin evenly convex and 

 provided with long setae ; propodus simple ; dactyl short. Second 

 gnathopods very slightly longer than first, propodus very slender 

 and chelate; dactyl very small. 



Dactyls wanting in all the pereiopods. First and second 

 pereiopods small and subequal with carpus broader than long, 

 due to a rounded lobe on posterior margin; propodus dilated 

 distally; third pereiopod considerably larger than second and 

 with greatly expanded basal joint and merus and carpus dilated 

 transversely; fourth pereiopod largest, with basal, meral, and 

 carpal joints greatly expanded; fifth pereiopod with basal joint 

 broader than long and with anterior and posterior margins very 

 strongly convex, merus with a very long lobe projecting 

 posteriorly which is armed with sharp spines and plumose setae. 



Uropods biramous ; second pair smallest ; terminal pair not 

 projecting quite as far as first pair, outer ramus biarticulate. 

 Telson short and broad, strikingly bilobed, with setae on distal 

 and outer margins. 



The color according to Bate is pale grayish yellow, resembling 

 somewhat closely the sand in which it lives. 



Length 18 mm. 



Distribution: Georgia to Cape Cod. Specimens have been 

 found at New Haven, Connecticut. 



