THE CRUSTACEA OF NEW JERSEY. 53 



Body rather slender, much more so than* in Buhranchipiis. 

 Second antennae of male three- jointed, remarkably long- and large, 

 tortuous and twisted, basal joint stout, armed externally at end 

 with very long slender spur, about as long- as joint itself. Second 

 joint thick, very long-, but upward and inward near end on in- 

 side row of small papill?e. At end it enlarges into short, thick, 

 hand-like portion, the third joint, which divides into two long, 

 unequally forked chitinous appendages. Second antennae of 

 female as usual, broad, suddenly mucronate at tip. Eleven pairs 

 of feet, much as in Buhranchipiis. First endite as usual, but 

 fringe rather long, as also that of other endites. Fifth endite 

 square, outer edge hollowed out, spines on lower edge few and 

 unusually blunt. Sixth endite more acute than in Buhranchipus. 

 Flabellum large and rounded, fuller than in Buhranchipus. Gills 

 rather large. Penis consists of two separate very long, curved, 

 filiform processes. Egg-sac of -female long and slender. Caudal 

 appendages longer and broader than in Bubranchipus. 



This genus differs from Buhranchipus in the absence of frontal 

 appendages, and may easily be known by the long three- jointed, 

 twisted and elbowed claspers, and by the two long, slender, fila- 

 mental processes forming the male genital armature. 



Streptocephalus sealii Ryder. 



Plates 4 and 5. 



Streptocephalus sealii Ryder, Proc. Acad. Nat. Sci. Phila., 1879, p. 200, fig. 

 (head). Near Woodbury, New Jersey. 



Leidy, Proc. Acad. Nat. Sci. Phila., 1880, p. 156. Woodbury, N. J. 



• Packard, Twelfth Ann. Rep. U. S. Geo. Surv. Terr., Hayden, I. 1883, 



p. 348, fig. 21 (copies Ryder). Note on Woodbury examples, also others 

 from Glendale, on Long Island. 



Underwood, Bull. 111. Lab. N. Hist., II, Oct. 1886, p. 355- New York 



and New Jersey. 



Description. — Body elongate, rather slender, moderately thick. 

 Inner branch of terminal joint of male claspers shortest. At 

 interior front edge of short branch two unequal lobes extend 

 forw^ards and lie flat against laminar posterior border of front 

 branch. At lower posterior angle of this lamina, or blade of for- 



