176 RATHBUN 



tive Zoology, measure as follows: Male, length 24.2 mm., width 33.4 

 mm.; female, length 18.7 mm., width 25 mm. 



CANCER ANTENNARIUS Stimpson. 



Distribution. Queen Charlotte Sound, British Columbia, to Magda- 

 lena Bay, Lower California. Shallow water to 7 fathoms. 



CANCER GIBBOSULUS (de Haan). 



Corystes (Trichocera) gibbosula DE HAAN, Fauna Japon., 45, pi. u, fig. 4, pi. 



xin, fig. 3, 1835. 



Trichocarcinus gibbosulus MlERS, Proc. Zool. Soc. London, 1879, P- 34- 

 Cancer gibbosulus RATHBUN, Proc. U. S. Nat. Mus., xxi, 581, 1898. 



Distribution. From Granite Cove, Port Althorp, Alaska, to San 

 Geronimo Island, Lower California; Japan. Shallow water to 40 

 fathoms. 



CANCER ANTHONYI Rathbun. 

 Plate vi, fig. 2. 



Cancer anthonyi RATHBUN, Proc. Biol. Soc. Wash., xi, in, 1897; Amer. 

 Nat., xxxiv, 134, 1900. 



Distribution. Long Beach, California (H. N. Lowe); Playa Maria 

 Bay, Lower California. 



Size. Among the specimens taken by Mr. Lowe from the wharf at 

 Long Beach is a male somewhat larger than the type, measuring 52.1 

 mm. long and 77.5 mm. wide. 



CANCER JORDANI Rathbun. 



Plate vi, fig. 4. 

 Cancer jordani RATHBUN, Amer. Nat., xxxiv, 133, 1900. 



A small species allied to C. magister and C. antennarius. 



Female. Length of carapace one and a fourth times width. Surface 

 iiairy and covered with small crowded scabrous granules. Regions indi- 

 cated by narrow and shallow depressions. Teeth of front and lateral 

 border not thickened as in C. antennarius ; inner orbital tooth very slightly 

 produced ; margin of upper orbital tooth almost transverse, scarcely denti- 

 form. Lateral teeth separated to their bases, tips spiniform and curved 

 forward ; second, fourth, sixth, and eighth teeth smaller than the others 

 (the outer orbital tooth reckoned as the first) ; ninth tooth scarcely more 

 prominent than eighth. No postero-lateral tooth. Basal antennal tooth 

 and the adjoining tooth of the orbital margin acute. Movable part of 

 antennae half as long as carapace. The outer maxillipeds overlap con- 



