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, pl. 1, fig. 4, pl. 
XMM hie: 35.5635. 
Trichocarcinus gibbosulus MIERS, 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 v1, fig. 2. 
Cancer anthonyi RATHBUN, Proc. Biol. Soc. Wash., XI, 111, 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 jordanit 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 
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. 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 
antenne half as long as carapace. The outer maxillipeds overlap con- 
