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



Telson small, oval, twice as long as broad and rounded distally. 



Length 6 mm. 



Distribution: Arctic Ocean, Greenland, Iceland, Norway, 

 Fishers Island Sound, Long Island Sound, off Stonington, 

 Connecticut. 



CALLIOPIID^. 



Coxal plates not large. 



First antennae with peduncle usually short and accessory 

 flagellum uniarticulate or wanting. 



Mouth parts varying slightly from the normal. 



First and second gnathopods usually feeble, subchelate: 



Marsupial plates of female large and broad. 



Terminal uropods with inner ramus longer than outer. Telson 

 entire, sometimes a little notched or emarginate. 



Calliopius Lilljeborg. 



Antennae stout, subequal in length, both having flagella divided 

 into numerous short and sharply defined articulations carrying 

 large calceoli ventrally, last peduncular joint of first antennae 

 produced to a triangular process which also bears calceoli ; acces- 

 sory flagellum wanting. 



Mandibles with comparatively large palp in which the terminal 

 joint is as long as the second. 



Gnathopods strong, with short carpus produced posteriorly 

 to a setiferous lobe ; propodus large with palm occupying nearly 

 its entire length and imperfectly defined. 



Last uropods scarcely reaching beyond the others, peduncle 

 comparatively short, rami subequal and lanceolate. 



Telson not incised at tip, tongue-like. 



Calliopius lasviusculus (Kroyer). 



1838. Amphithoe lavinscula, Kroyer, Kongel. Danske 

 Videns-Kabernes Selskabs Skrifter, Copenhagen, vol. 7, p. 281, 

 pl. 3, fig- 13- 



1871. Calliopius Iccviusculus, Boeck, Forh. Videnskabs- 

 Selskabst, Christiania, 1870, p. 197. 



1906. Calliopius Imviusculus, Stebbing, Das Tierreich, Lief. 

 21, p. 296. 



Eyes large, reniform. 



