THE SPIDER CRABS OF AMERICA 



313 



degree, that is, the spines that are elongate in No. 15203 are less so 

 in No. 20103 and the tubercles' are more abundant. 



Measurements. — Largest male, Atlantic City (in Mus. Phila,), 

 median length 107.2, width 95.3 mm. Large male (32236), total 

 length of carapace 103.4, width including spines 93.7 mm. 



Habitat. — Very abundant on muddy shores and flats; also occurs 

 on every other sort of bottom. 



Range.— Yvova Windsor, Nova Scotia, to West Florida; California. 

 Also reported from the Isthmus of Panama and Bermuda,** which 

 localities need verification. Depth, shore to 27, exceptionally 68, 

 fathoms. 



Material examined. — Sec table, pages 314-317. 



Fig. 105.— Libinia dvbia, young male (40177), total length of carapace 38 mm., dorsal view. 



(After R. Rathbun) 



LIBINIA DUBIA Milne Edwards 



Plates 114 and 115; plate 122, fig. 1 



Libinia dubia Milne Edwards, Hist. Nat. Crust., vol. 1, 1834, p. 300, pi. 

 I4.bis, fig. 2 (type-locality, cSles des Etats-Unis; type in Paris Mus.). — 

 Streets, Proc. Acad. Nat. Sci. Philadelphia, 1870, p. 104. — A. Milne 

 Edwards, Crust. Reg. Mex., 1878, p. 129 (part; not L. disiinda 

 von Martens nor rhornboidea) , pi. 18, figs. 5-5 d, not pi. 26. — Rath- 

 bun, Proc. U. S. Nat. Mus., vol. 15, 1892, p. 237, pi. 31, fig. 1 (part, 

 not all synonymy). — Hay and Shore, Bull. Bur. Fisheries, vol. 35, 1915-16 

 (1918), p. 456, pi. 38, fig. 5, and synonymy. 



Libinia canaliculata De Kay, Crust, of N. Y., 1844, p. 2 (part). Not L 

 canaliculata Say, 1817. 



Libinia distinda Gu^rin, La Sagra's Hist. Cuba, pt. 2, vol. 7, 1856, Crust., 

 p. xii (type-locality, Cuba; type in Lisbon Mus.). — Brito Capello, 

 Jorn. Sci.Lisboa, vol. 3, no. \2, 1871, p. 263, pi. 3, fig. 2 (type). 



Libinia subspinosa Streets, Proc. Acad. Nat. Sci. Philadelphia, 1870, 

 p. 105 (type-locality, "Chile," really Cuba; holotype in Mus. Phila. 

 Acad. Nat. Sci.). 



•• Recorded, but identification doubted by VerriU, Trans. Conn. Acad. Sci., vol. 13, 1908, p. 396. 



