148 Bulletin, Vanderhilt Marine Museum, Vol. II 



Synonymy. — Eriphia hispida Stimpson, Ann. Lye. Nat. Hist. New 

 York, vol. 7, p. 218, 1860. 



Pseuderiphia hispida A. Milne Edwards, Crust. Reg. Mex., p. 340, 

 pi. 56, fig. 1, 1880. 



Eriphides hispida Rathbun, Proc. IT. S. Nat. Mus., vol. 38, p. 586, 

 1910 ; Proc. Wash. Acad. Sei., vol. 4, No. 8, p. 282, 1902 ; Zoologica, 

 N. Y. Zool. Soc., vol. 5, No. 14, p. 158, 1924.— Boone, Zoologica, 

 N. Y. Zool. Soc., vol. 8, No. 4, p. 236, fig. 87A and 87B, 1927. 



Family: CANCRIDAE. 



Subfamily: Cancrinae. 



Genus: CANCER Linnaeus, 1758. 

 Cancer borealis Stimpson. 



Plate 49. 



Names : Jonah crab ; northern rock crab. 



Diagnostic characters : Margins of anterolateral teeth of carapace 

 denticulate. 



Type : Prof. Stimpson states of his type : * ' It is a northern species 

 not found south of Cape Cod, although extending to the northward 

 at least as far as Nova Scotia," 



Distribution: This species has been taken in both shallow and 

 deep water but is more frequently found in great depths. It is rather 

 a rare species and is often confused with the closely related but much 

 more abundant Cancer amaenus Herbst. The established records give 

 it a range from Nova Scotia to the West Indies, but it is more often 

 found in the northern fauna than in the southern. 



Material examined : One very large male dredged in 1100 fathoms, 

 off Miami, Florida, March 3, 1926, with a species of rare deep-sea 

 barnacle, Poecilasma inequilaterale Pilsbry, on the crab's back and 

 cheliped. 



Color : Carapace yellowish beneath, brick-red above. Legs mottled 

 and reticulated brick-red and yellowish, shaded with purplish tints. 



Habits : Professor Sydney I. Smith states that there is a very pro- 

 nounced difference in habits between Cancer horealis and C. amaenus, 

 the former usually remaining exposed while the latter conceals itself 

 under rocks. 



