142 THE AMERICAN NATURALIST. [VoL. XXXIV. 
C’. Posterior of the lateral spines of the carapace much longer 
. than the other lateral spines or teeth 
P. seb@ (Milne Edwards) MC ) 
B’, Carapace with sharp posterior angles 
P. spinicarpus (Stimpson) M(CH)G 
Genus Bathynectes Stimpson . . . . B. superba (Costa) M 
Genus Ovalipes Rathbun. . . . . . : serat NE NMSG 
Genus Carcinides Rathbun . . . . . . . . C.enas (Linnzus) M 
BIBLIOGRAPHY. 
Say, THOMAS. ‘17. An Account of the Crustacea of the United States. 
Journ. Acad. Nat. Sci. irr Vol. i, pt. i, pp. 57-63, 65- 
8o, 97-101, Pl. IV. 
Say, THOMAS. '18. Appendix to the Account of the Crustacea of the 
United States. Journ. Acad. Nat. Sci. Philadelphia, Vol. i, pt. ii, 
445-458. 
MILNE Epwarps, H. '34 Histoire naturelle des crustacés. Vol. E 
chap. iv, pp. 363-468, and atlas. 
GOULD, A. A. '4l A Report on the Invertebrata of Massachusetts. 
. Crustacea. Pp. 321—341 
GIBBES, LEWIS R. '50. On the Carcinological Collections of the United 
States. Proc. Amer. Assoc. Adv. Sci. Vol. iii, pp. 167-201. 
DANA, JAMES D. '52. Crustacea of the United States Exploring Expedi- 
tion. Vol. i, pp. 142-306, and atlas. 
STIMPSON, WILLIAM. '57. Crustacea and Echinodermata of the Pacific 
Shores of North America. Journ. Boston Soc. Nat. Hist. Vol. vi, 
PP. 444-532. 
STIMPSON, WILLIAM, '59. Notes on North American cpr No. I. 
Ann. Lyc. Nat. Hist. New York. Vol. vii, pp. 49-93, P 
d WiLLIAM. '60. Notes on North American rait No. Il. 
Ann. Lyc. Nat. Hist. New York. Vol. vii, pp. 176-246, Pls. 
I, v. 
ORDWAY, ALBERT. '63. Monograph of the Genus Callinectes. /our7. 
Boston Soc. Nat. Hist. Vol. vii, pp. 567-583. 
MILNE EDWARDS, A. '65. Études zoologiques sur les crustacés récents 
de la famille des cancériens. Nouv. Arch. Mus. Hist. Nat. Paris. 
Tome i, pp. 177-308, Pls. XI-XIX 
SmitH, S. I. '69. Notes on New or Litt: Knows Species of American 
Cancroid Crustacea. Proc. Boston Soc. Nat. Hist. Vol. xii, pp- 
274-289. 
