THE CRUSTACEA OE NEW JERSEY. 435 



Pinnotheres maculatus Say. 



Plates 136 and 137. 



Mussel Crab. 



Pinnotheres maculatus Say, Journ. Acad. Nat. Sci. Phila., I, pt. 2, 1818, p. 

 450. Inhabits the nniricated Pinna of our coast. 



Gibbes, Proc. Amer. Assoc. Adv. Sci., Ill, 1850 (1851), p. 179. East 



Coast ; New York ; South Carolina. 



Verrill, Rep. U. S. F. Com., I, 1871-72 (1873), pp. 434, 459 (in Mytilus 



cdulis) Southern New England. 



S. I. Smith, Rep. U. S. F. Com., I, 1871-72 (1873), p. 546. Cape Cod 



to South Carolina. 



■ Kingsley, Proc. Acad. Nat. Sci. Phila., 1878, p. 323. Cape Cod to 



South Carolina. 



R. Rathbun, Rep. Fisher. Ind. U. S., I, 1884, p. 766. In shells of 



Pecten and Mytilus. 



'M. J. Rathbun, Amer. Nat., XXXIV, 1900, p. 590. Cape Cod to Flor- 

 ida and Gulf of Mexico. 



M. J. Rathbun, Occas. Papers Boston Soc. N. Hist., VII, 1905, p. 5. 



Cape Cod and Southward. 



Pinnotheres maculatum De Kay, N. Y. Fauna, Crust., VI, 1844, p. 13. South- 

 ern coast in Pinna mnricata. 



■ White, Cat. Crust. Brit. Mus!, XXV, 1847, p. 2,2- United States (Say's 



material). 



Mayer. Sea Shore Life, 1906, p. 105. Atlantic coast near New York 



in mussel and scallop shells. 



^Pinnotheres byssomice De Kay, N. Y. Fauna, Crust., IV, 1844, p. 13. In Saxi- 

 cava distorta of Southern Coast (U. S.). 



— • Gibbes, Proc. Amer. Assoc. Adv. Sci., Ill, 1850 (1851), p. 179. Phila- 

 delphia collection. Say's example. 



Pinnotheres ostreum (nee Say) S. I. Smith, kep. U. S. F. Com., I, 1871-72 

 (1873), PI. I fig. 2 (male). 



Description. — Carapace membranaceous, though a little firmer 

 than in next species, covered with a dense pubescence, more dis- 

 tinct in miales usually, form subglobose, about broad as long in 

 male and a little broader than long in female. Dorsal furrows 

 obsolete. Front quite broad, equal to about one-third width 

 of carapace, slightly produced and with very slight median 

 notch as seen from above, edge generally a little convex. Orbits 

 rounded, small. Antennules large, robust, much longer than 

 antennae. Latter slender, with rather tapering short filamentous 



