204 CONN ICCIJ CUT GEOL. ANI> NAT. HIST. SURVEY. [Bull. 



Second and third thoracic segments subequal in length and 

 slightly shorter than the rest which are also subequal. Coxal 

 plates distinctly separated from their respective segments on all 

 but first segment. First pair of legs short and stout and well 

 armed with spines and setae ; ischium nearly triangular with upper 

 margin much produced distally and setose; carpus short and 

 small; propodus robust, somewhat curved; dactyl strong and 

 short. Second and third pairs resembling first but with longer 

 carpus. Fourth pair of legs short like the preceding but 

 resembling the following except in size, provided abundantly 

 with fascicles of setae ; propodus straight and much narrower than 

 carpus ; fifth and sixth pairs of limbs increasing in size ; last pair 

 somewhat smaller. 



Abdomen slightly narrower than thorax, all six segments 

 distinct ; fi-f th segment longer dorsally but shorter laterally than 

 the preceding segments. Telson triangular, with setose apex 

 truncated and notched at tip. Uropods extending only a little 

 beyond the end of telson, provided with abundant long setse; 

 rami of equal length, but outer one only about one-third as wide 

 as inner one which has a notch on outer margin near posterior 

 end; inner angle of peduncle produced and extending about two- 

 thirds the length of the telson. 



Length of large specimens 32 mm., average length 22 mm. 



This species is found from the surface to depths of 18 

 fathoms, on muddy and sandy bottoms. 



It has been reported from Charleston, South Carolina ; Curri- 

 tuck, North Carolina; Long Island Sound; Block Island; off 

 Fishers Island; Vineyard Sound; Woods Hole, Massachusetts. 



According to the Woods Hole Survey, it is sometimes taken 

 in large numbers in winter from dead fish; and at Woods Hole 

 has been known to block up the cocks of the water supply of 

 the fish hatchery. 



^GID^. 



Body more or less broad and depressed, dorsal surface evenly 

 vaulted and very smooth. Head comparatively small, broader 

 than long, front not produced above bases of antennae. Eyes, 

 when present, large. 



