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. — Qn^tn Charlotte Sound, British Columbia, to Magda- 

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



CANCER GIBBOSULUS (de Haan). 



Corystes (Trichocera) gibbosiila de Haan, Fauna Japon., 45, pi. ll, fig. 4, pi. 



XIII, fig. 3, 1835. 

 Trichocarcinus gibbosidus MiERS, Proc. Zool. Soc. London, 1879, p. 34. 

 Cancer gibbostdiis Rathbun, Proc. U. S. Nat. Mus., xxi, 581, 1898. 



Distribution.— Yrom 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.— Avaong 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 aUied to C. magister and C. antefinarius. 



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

 hairy 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. antefinarius; 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- 



