THE CRUSTACEA OE NEW JERSEY. 291 



and on hind edges of seg'ments, especially dorsally, where seg- 

 ments also marked with black dots. Thinner portions of body 

 somewhat translucent in life, though becoming nearly uniform 

 buff or yellowish, with black dots, in alcohol. Length 32 mm. 



Reuiarks. — Found from North Carolina to Nova Scotia, 

 ranging from the surface to a depth of forty-five fathoms. It 

 prefers muddy and sandy bottoms, swimming in shallow water. 

 It has been found in the stomach of a skate and under the eye 

 of P sen do triads inicrodon, taken on Long Island. Its food is 

 often the common blue crab, Callinectes sapidns, and from a 

 single crab over one hundred specimens have been taken. It 

 may be captured in a dip-net and is found in lobster-pots. It is 

 abundant in Vineyard Sound, and is especially common during 

 the winter. My examples from Atlantic City and Beach Haven, 

 the latter a large series obtained by Dr. Leidy. 



Pamily ANTHURID^. 



Bbdy long, slender, subcylindric, rather flexible. Head com- 

 paratively small. Segments of mesosome all well defined, with- 

 out distinct coxal plates. Metasome comparatively short, with 

 anterior segments sometimes coalesced. Telson generally well 

 defined, linguiform. Both pairs of antennae, at least in female, 

 short and subequal in length, originate close together, one pair 

 beneath the other. Oral parts modified for perforation and suc- 

 tion. Legs with normal number of joints, basal and ischial rather 

 slender, form together a genicular bend. First pair usually much 

 stronger than others and subcheliform. Two succeeding pairs 

 also subcheliform, much more feeble. Four posterior pairs of 

 legs ambulatory. Pleopoda chiefly branchial, first pair large and 

 more or less covering others. Uropoda with outer ramus ex- 

 tending upwards, so as generally to arch over base of telson. In- 

 cubatory pouch apparently not formed by distinctly defined 

 lamellae. 



Genera about ten. 



Genus CYATHURA Norman and Stebbing. 



Cyathura Norman and Stebbing, Trans. Zool. Soc. London, XII, 1886, pt. 4, p. 

 121. Type Anthura carinata Kroyer, monotypic. 



