THE CRUSTACEA OF NEW JERSEY. 121 



maxilL'e small, bifurcate, branches acuminate. First and fourth 

 thoracic legs uniramose, second and third biramose. Free 

 thoracic segment simple, without dorsal plates. Genital seg- 

 ment also simple, without plates or processes. Abdomen one or 

 twO' segmented. Young with frontal filament during chalimus 

 stage, as in Caligus. 



Lepeophtheirus edwardsi C. B. Wilson. 



Plate 32. 



Lepeophtheirus edwardsi C. B. Wilson, Proc. U. S. Nat. Mus., XXVIII, 1905, 

 p. 627, PI. 21, PI. 22, fig. 258, figs. I, 4a, 4b, II, 31, 34, 39 in text. Great Egg 

 Harbor, New Jersey. Wood's Holl, Mass. 



Description of female. — Carapace ovate, widest posteriorly, 

 longer than wide. Frontal plates distinct, strongly curved, not 

 quite half width of carapace. Posterior sinuses shallow, wide, 

 well rounded. Median lobe three-eighths entire wddth, squarely 

 truncated posteriorly, and projecting well back of lateral lobes. 

 Latter short, blunt, straight. Free thoracic segment of medium 

 length, about half wide as genital segment and contracted an- 

 teriorly where it joins carapace. Genital segment slightly obo- 

 vate with gracefully rounded sides and angles, contracted to 

 very short neck before joining abdomen. Latter one-fifth long 

 as genital segment, wider than long, tapering posteriorly, and 

 made up of single joint cut for one-third its length at anus. 

 Anal papillae small, wider than long, with short stout setje. Egg- 

 tubes nearly long as entire body and wide as abdomen, each with 

 seventy-five to eighty eggs. Anterior antennae of medium size, 

 well armed with spines and setse. Posterior antennae rather 

 slender and strongly curved. All other appendages either lamel- 

 late or furnished with lamellae somewhere in their structure. 

 Two pairs of maxillae with wide wings either side of central 

 spines. In second maxillae though spines well separated and 

 divergent, these wings nearly touch each other at center. First 

 maxilliped with spatulate lamella instead of spine inserted in 

 inner margin of terminal joint near its center. Second maxil- 

 lipeds large, stout, with swollen basal joint furnished on pos- 



