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



Third pereiopocl stout with basal joint well expanded and sub- 

 rectangular in form; fourth, fifth, and sixth joints ver}-- stout, 

 and subequal in length, dactyl very small. Fourth pereiopods 

 also stout; basal joint broader than in preceding appendage and 

 more rounded ; propodus much longer than carpus. Fifth pereio- 

 pod somewhat smaller than preceding two; second joint broadly 

 expanded posteriorly and with hind margin dentate. 



Posterior margin of lateral expansion of third abdominal 

 segment furnished with a few setae. 



First uropod with peduncle long and slender and provided 

 near distal end with a few spines; rami styliform and somewhat 

 shorter than peduncle. Second uropod shorter and stouter than 

 first with peduncle and rami provided with numerous spines. 

 Third uropod extending beyond others ; peduncle short ; rami 

 in male subequal and laminar, provided on margins with 

 numerous plumose setae, outer ramus with short distal joint. In 

 female outer ramus much larger than inner and biarticulate with- 

 out plumose setae. 



Telson subrectangular, incised nearly to base ; lobes evenly 

 rounded and provided toward lateral aspect with two very short 

 spines. 



Length 4.5 mm. 



Distribution: Newport, Rhode Island (S. D. Judd) ; oflf 

 Stonington, Noank, Noank Harbor (surface), Connecticut; Long 

 Island Sound. 



STENOTHOID^. 



Similar to the Metopidae except as follows : 

 Mandibles without molar tubercle or palp. First maxillae with 

 biarticulate palp. Maxillipeds with inner plates small ; outer 

 plates obsolete. 



Stenothoe Dana. 



Coxal plates of moderate size except fourth which is greatly 

 produced posteriorly and covers to a great extent the succeeding 

 pairs. 



Antennae elongated and as a rule subequal in length. 



Mandibles without palp and with molar tubercle obsolete. 

 First maxillae with palp large and biarticulate. Maxillipeds with 



