270 BULLETIN 97, UNITED STATES NATIONAL MUSEUM. 



Port Orchnrd, Wushington; July, 1889; O. B. Johnson; 9 males, 

 5 females (149G9). 



Angel Island, San Francisco Bay, California; Nov. 7, 1890; Alba- 

 tross; 3 males, 3 females (201G2). 



Monterey, California: Trowbridge; 2 males (2056). H. Hemp- 

 hill; 1 male (2287). 



Monterey Bay, California; under submerged rocks along shore; 

 Harold Heath; 1 male (22878). 



Pacific Grove, California: Stanford Univ. ; 1 male (19075). July, 

 1895; J. O. Snyder; 5 males, 2 females (19819). John C. Brown; 

 3 specimens (23922). June, 1905; J. E. Benedict; 28 spechnens 

 (32233). 



Santa Barbara, California; 1880; D. S. Jordan; 1 female, ovig. 

 (3049). 



Catalina Harbor and Island, California; 1874; W. H. Dall; 1 

 male, 1 female (U802). 



Pillar Point, San Mateo County, California; June 30, 1903; C. F. 

 Baker; 1 male, 1 female (29311). 



Point Loma, San Diego Bay, California; Albatross; 7 specimens 

 (189G1). 



Turtle Bay, Lower California; Aug. 1, 1896; A. W. Anthony: 6 

 males, 10 females (19512). 



HEMIGRAPSUS OREGONENSIS (Dana). 



Plate 70. 



Psenilograpsus oregoncnsis Dana, Proc. Acad. Nat. Sci. Philadelphia, vol. 



5, ISul (1S52), p. 24S (type-locality, in Orcgoniae frcto "Puget"; type 



male, Cat. No. 2333, U.S.N.M.) ; U. S. Expl. Exped., vol. 13, Crust., pt. 1. 



1852. p. 334 ; atlas, 1855, pi. 20, fig. 6a-b. 

 Bracliynotus oregoncnsis Holmes, Occas. Papers California Acad. Sci., 



vol. 7, 1900, p. 82. 

 Hemigrapsus oregoncnsis Rathbun, Amer. Nat., vol. 34, 1900, p. 587. 



Diagnosis. — Broad in front. Two side teeth. Surface uneven. 

 Front with two prominent lobes. Palm of male with hairy patch 

 inside. Legs hairy. 



Description. — Differs from H. nudus as follows: 



The distance across the front and orbits is greater, the antero- 

 lateral margins being less curved. Surface more uneven, especially 

 anteriorly, sparsely punctate. A raised curved line of granules runs 

 between the last side tooth and the end of the H impression. Edge 

 of front margined and bearing two prominent thickened lobes. Epi- 

 gastric lobes very prominent. The two lateral teeth are more promi- 

 nent and their sinuses more deeply cut. 



Posterior edge of epistome with two shallow V sinuses. The outer 

 maxillipeds are nearer trgether, the merus is no broader than long. 



