THE CRUSTACEA OE NEW JERSEY. 197 



Elasmopus levis (S. I. Smith). 



Plate .s8. 



Mcera levis (S. I. Smith) Verrill, Rep. U. S. F. Com., I, 1871-72 (1873), p. 

 315. Near low-water mark. 



S. I. Smith, Rep. U. S. F. Com., I, 1871-72 (1873), p. 559. Neiv 



Jersey, Long Island Sound and Vineyard Sound. 



Elasmopus Icevis Holmes, Amer. Nat., XXXVII, 1903, p. 282. Cape Cod to 

 Cape Hatteras. 



Holmes, Bull. Bur. Fisher., XXIV, 1904 (1905), p. 507, figs. Netv 



Jersey to Provincetown, Mass. 



Paulmier, 58th An. Rep. N. Y. State Mus., IV, 1904 (1906), p. 162, 



fig. 32. Bergen Beach, N. Y. 

 Elasmopus levis M. J. Rathbun, occas. Papers Boston Soc. N. Hist.. VII, 

 No. 5, 1905, p. 69. Long Island Sound. 



Description. — Eyes nearly round. First antennae rather stout, 

 about two-thirds body length, third joint about two-thirds length 

 of second, which subequal to first, and flagellum about long as 

 peduncle, segments rather short. Secondary flagellum not half 

 long as last peduncle joint, of two oblong joints and minute 

 very short terminal joint. Second antennae scarcely longer than 

 peduncle of first pair, slender, flagellum shorter than peduncle 

 and of about eight joints. First four coxal plates not deeper 

 than their segments, and fourth about broad as deep. First 

 gnathopods in male with oblong hand, subequal to carpus, palm 

 quite oblique and evenly convex. Second gnathopods of male 

 very large, carpus scarcely one-fourth length of hand and mucli 

 broader than long, with narrow posterior lobe. Hand oblong, 

 opposite sides nearly parallel, and smooth palm oblique. Row 

 of four or five spines near base of finger on ridge just within 

 margin of palm, and stout finger closes not against palm but 

 into an excavation on inner side of hand, also conical tooth at 

 upper end of this excavation. Hand of first gnathopods of 

 female much like male, but palm nearly transverse. Second 

 gnathopods much smaller than in male, oblong in shape, some- 

 what resembling first gnathopods of male, oblique palm with two 

 rows of spines along its entire length and with pair of larger 

 spines at distal end. Finger more nearly straight than in male, 

 and more evenly tapering and closing against palm. Merus 



