82 CALIFORNIA ACADEMY OF SCIENCES. 



patch of long, fine hair on the inner surface. Legs rather short, smooth, 

 punctate and nude; dactyls short, stout, scabrous; those of the last pair 

 less than two and one-half times (often less than twice) as long as wide, 

 and upturned at the tip. 



The color of this species is quite variable. It is gen- 

 erally of a mahogany red, but may be purplish, dark 

 red, or red marbled with white. I have seen some spec- 

 imens with the upper side almost entirely white. But 

 amid all the variations of color, the red spots on the 

 chelipeds remain, so far as I can determine, an abso- 

 lutely constant character. Young specimens present 

 greater color variations than older ones. 



Length. Breadth. 



Male 44 mm 51.5 mm. 



" 43 mm 50 mm. 



" 23mm 26 mm. 



Female 22 mm 25.5 mm. 



Sitka (Kingsley); Vancouver's Island (Smith); Puget 

 Sound; common from Oregon to Lower California; Gulf 

 of California (Kingsley). Found among rocks near the 

 shore. 



This species differs from sanguineus (De Haan), with 

 which it has been united by Kingsley, in having a tuft 

 of hair on the inner side of the hand in the male, and 

 in the different inferior orbital margin. 



Brachynotus oregonensis (Dana). 



Pseudograpsus oregonensis DANA, Proc. Acad. Nat. Sci. Phila., 1851, p. 

 248; Crust. U. S. Expl. Expd., Part I, 1852, p. 334, PI. XX, fig. 6. 

 STIMPSON, Proc. Gal. Acad. Sci., Vol. I, 1856, p. 88; Journ. Bost. Soc. 

 Nat. Hist., Vol. VI, 1857, p. 468. MILNE-EDWARDS, Ann. Sci. Nat. 

 (3), Zool., T. XX, p. 157. COOPER, Rep. Expl. and Sur. to Pac. Ocean, 

 Vol. XII, 1860, Book 2, p. 389. STIMPSON, Proc. Acad. Nat. Sci. 

 Phila., 1858, p. 104. LOCKINGTON, Proc. Cal. Acad. Sci., Vol. VII, 

 1876, p. 152. KINGSLEY, Proc. Acad. Nat. Sci. Phila., 1880, p. 209. 

 RATHBUN, R., The Fisheries of the U. S., 1884, Sec. 1, p. 765. 



