: 2 
~{ 
244 CRABS OF THE FAMILY PERICERID—RATHBUN. 
the spine at the antero-external angle is long and visible from above, 
Anterior legs long, palm slender and elongated, fingers slightly or not 
at all gaping. 
Pericera cornuta (Herbst). 
Cancer cornudo Herbst, Natur. der Krabben u. Krebse, 1, pt. 4, p. 6, pl. Lrx, fig. 6, 1804. 
Maia taurus Lamarck, Hist des Anim. sans Vert, v, p. 242, 1818. : 
Pericera cornuta Latreille, Régne Animal (2d ed., Iv, p. 58); translation, 11, p. 44, 
1831. Milne Edwards, Hist. Nat, des Crust., 1, p. 335, pl. 14 bis. figs. 4, 5, 
1834; (Atlas du Regne Animal de Cuvier, Crustacés, ed. 3, pl. Xxx, fig. 1). 
Gibbes, Proc. Amer. Assoc. Ady. Sci., p. 172, 1850. Guérin, in La Sagra’s Hist. 
of Cuba, p. 11, 1856. Saussure, Mém. Soc. Phys. de Genéve, XIv, p. 426, 1857. 
Stimpson, Ann. Lye. Nat. Hist. N. Y., vir, p. 183, 1860; Bull. Mus. Comp. Zool., 
II, p. 113, 1870. (Desbonne and Schramm, Crust. de la Guadéloupe, p. 12, 1867). 
Streets, Proc. Acad. Nat. Sci. Phila., p. 131, 1872. Martens, Arch. fiir Natur., 
XXXVIII, p. 84, 1872. A. Milne Edwards, Miss. Sci. au Mexique, pt. 5, 1, p. 51, 
1873. Miers, Jour. Linn. Soc. London, xiv, p. 664, pl. x11, figs. 4, 5, 1879; Chal- 
lenger Rept., Zool., xvul, p. 76, 1886. Aurivillius, K. Sv. Vet.-Akad Hand., Bd. 
23, 1, p. 54, pl. 2, fig. 3, 1889. 
Chorinus armatus Randall, Jour. Acad. Nat. Sci, Phila., vim, p. 108, 1859. 
Dimensions of largest specimen in millimeters: Length, from tip of 
rostrum to tip of posterior spine, 146.5; width, including spines, 93; 
length of rostrum, about 53; length of cheliped, 215. 
RECORD OF SPECIMENS EXAMINED, 
Savannah, Georgia (Buffalo Soe. Nat. Sci.). 
? Gulf of Mexico (5843). j 
Jamaica (Buffalo Soc. Nat. Sci.); U.S. Fish Comm. (7670); T. H. Morgan, 1891. ; | 
St. Thomas; A. H. Riise (2458); U.S. Fish Comm. (16177). | 
) 
| 
A. Milne Edwards records this species as far south as Bahia. 
Pericera cornuta czelata (A. Milne Edwards). 7 
Pericera calata A. Milne Edwards (Bull. Soc. Philom., June, 1878, p. 5); Miss. Sci. au : 
Mexique, pt. 5, 1, p. 200, pl. xv A, fig. 3, 1879; Bull. Mus. Comp. Zool., vm1, p. ; 
1, 1880. Miers, Challenger Rept., Zool., Xvi1, p. 76, 1886. } 
Pericera cornuta (2) and Pericera, sp., Kendall, Bull. U.S. Fish Commission, Ix, p. 7 
303, 1889 (1891). 7 
A comparison of a series of specimens from different localities seems to 
indicate that Pericera celata A. Milne Edwards is only a variety of P. 
cornuta (ierbst), as Miers has suggested (loc. cit.). A: Milne Edwards 
says of cornuta that the rostral horns are shorter, the interorbital space 
narrower and the carapace smoother than in eelata. In this collection | 
there are specimens of typical cornuta, and a large series of specimens | 
with prominent tubercles on the carapace, in many cases more spiny | 
than in A. Milne Edwards’s celata. In a specimen from the Gulf of 
Mexico (?), the carapace is smooth, and the rostral horns longer than 
in any specimen with tuberculous carapace; distally the horns are 
somewhat convergent. In another smooth specimen, from St. Thomas, 4 
the rostral horns are shorter than in many tuberculous specimens, 
