THE CRUSTACEA OF NEW JERSEY. 391 



jecting lobule. Abdomen, in adult, with third, fourth and fifth 

 segments fused. 



Species rather numerous, usually living along sandy shores, in 

 which they burrow. 



Calappa flammea (Herbst). 



Plate 116. 



Box Crab. 



Cancer Hammea Herbst, Natur. Krab. Krebs. II, 1794, p. 161, PI. 40, fig. 2. 



"Ostindien." (Doubtless West Indies.) 

 Calappa Havunea M. J. Rathbun, Am. Nat., XXXIV, 1900, p. 516. Virginian 



province. 

 M. J. Rathbun, Occas. Papers Boston Soc. N. Hist., VII, 1905, p. 13, 



(Ram's Island, Wood's HoU harbor, Massachusetts.) 



Description. — Carapace strongly convex, sloping down more 

 abruptly behind than anteriorly, front edge more rounded than 

 posterior, length about two-thirds its width. Greatest width 

 formed at posterior wing-like expansion, with about seven com- 

 pressed serras, of which median largest. Surface of carapace, 

 outer surface of chelipeds, upper surface of carpus, granular, and 

 also with rather numerous varied large or small tubercles scat- 

 tered about. Tubercles somewhat more numerous on anterior 

 part of carapace than elsewhere, and larger somewhat in three 

 series, as median and one well spaced each side. Front lateral 

 edge of carapace granulate and crenate. Posterior edge of cara- 

 pace slightly undulated, with beaded margin. Edges of posterior 

 lateral serras also beaded. Front edge of carapace with distinct 

 notch, scarcely projects beyond orbits. Pteryg-ostomian regions 

 covered thickly with hair. Septum of endostome produced for- 

 ward in strong denticle, though not so far anterior as frontal 

 edge. Orbits small, rounded, and short eye-stalks robust. An- 

 tennules small, peduncle not quite long as flagellum, which latter- 

 simple and tapering. Second maxillipeds strongly compressed 

 and hairy. Chelipeds quite large, and equal, except that left 

 closes over right and has smaller dactyl and pollex. Inner edges 

 of both dactyl and pollex with large teeth. Large elevated crest 



