I 



60 BULLETIN 138, UNITED STATES NATIONAL MUSEUM 



Measurements. — Smaller palm, superior length 12.6 mm., greatest 

 height 13.5 mm., inferior length to a point below sinus between fin- 

 gers 18 mm. Larger palm, height of cross section behind middle 13 

 mm., width of same 8.5 mm. 



CANCER BAINBRmGENSIS, new species 



Plate le, figs. 2 and 3 



Description. — The surface of both fingers is covered Avith coarse, 

 prominent, separated tubercles. The holotype (pi. 16, fig. 2) has 

 a broad and nearly level upper surface rounding into the lateral sur- 

 faces. Outer surface with a shallow longitudinal furrow. Basal pre- 

 hensile tooth proportionally smaller than that of the paratype. 

 Cross section of finger just distad to basal tooth almost circular. The 

 lower part of the paratype is broken away. Viewed from above the 

 prehensile tubercles form a row through the middle; basal tubercles 

 isolated and much the largest, in cross section squarish with corners 

 rounded off; the other three tubercles are contiguous and diminish 

 gradually in size (pi. 16, fig. 3). 



Measurements. — Greatest width of dactylus (holotype) 11.5 mm., 

 height from middle of lower surface of basal tooth 14 mm., height 

 at insertion in propodus 25.6 mm. Width of lower surface of im- 

 movable finger below middle of basal tooth, approximately (at least) 

 13.3 mm. 



Occurrence. — Washington : Sandstone beach at Bean Point, Bain- 

 bridge Island, Puget Sound ; upper Oligocene ; piece of a right mov- 

 able finger (holotype) and of a right (?) immovable finger (para- 

 type). Holotype in Stanford University. 



Relation. — Differs from other species in the broad and slightly 

 oblique upper surface of the dactylus or movable finger, but 

 approaches that of C. productus. 



CANCER FISSUS Rathbun 



Plate 6, fig. 1 ; plate 16, figs. 5 and 6 



Cancer fissus Rathbun, Proc. U. S. Nat. Mus., vol. 35, 1908, p. 343, pi. 49, 

 fig. 1 ; tyix^-locality, near Henry Spring on east face of " 1900 foot 

 hill " 4 miles south of Coalinga, Fresno County, California ; toward 

 base of Etchegoiu formation, Pliocene [not Miocene] series ; holotype, 

 No. 165477, U.S.N.M. 



Described from a carapace only (pi. 6, fig. 1). Lateral teeth 

 subtruncate, separated from one another by shallow V-shaped notches 

 and long closed fissures; teeth eiglit, including tooth at outer angle 

 of orbit, irregular in size and shape; the first, third, fifth, and 

 seventh larger than intervening teeth, ninth tooth very narrow ; the 



