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



First gnathopods with coxal plates small; basal joint with a 

 few slender spines on anterior margin ; merus rounded below, 

 where it is furnished with four spine-like setae and several much 

 shorter ones; carpus produced posteriorly into a rounded lobe 

 which has about three large spine-like setae at its distal end; 

 propodus nearly twice as long as wide, palm very oblique and 

 minutely pectinated like inner margin of dactyl. Second gnatho- 

 pods larger than first; coxal plate large; basal joint more or less 

 sigmoid; merus produced below into stiff setae and three large 

 spines at the tip ; propodus widest across distal end of palm which 

 is oblique, only slightly curved, not pectinated, and armed at 

 distal end with two or three pairs of spines. Pereiopods of sub- 

 equal length; posterior paii-s with basal joints considerably ex- 

 panded, and merus rather broad and produced downward at 

 postero-inferior angle; dactyls of all pereiopods large. Fourth 

 coxal plate not unustially large for the genus, scarcely ovate. 



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 uro- 

 pods about as long as peduncle, with proximal joint 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. 



Color pellucid, marked with scattered reddish-brown spots. 



Length about 2.5 mm. 



Distribution: Woods Hole, Long Island Sound. Holmes 

 found it among seaweed and on piles. 



CEDICERID^. 



Eyes, when present, usually contiguous above. 



First antennae with accessory flagellum absent or rudimentary. 



Mandibles with palp usually large. 



First gnathopods subchelate. Second pair subchelate or 

 rarely chelate. Last pereiopods very large with dactyl styliform. 



Uropods commonly extending back to the same distance. 

 Telson small, entire. 



