108 RATHBUN 



Family ALPHEID&. 

 Genus Alpheus Fabricius. 



ALPHEUS DENTIPES Guerin. 



Alphens dentipes GURIN, Exp. Scient. Moree, part. Zool., 39, pi. xxvn, 



fig. 3, 1832. 

 Alpheus c/amafor HOLMES, Occas. Papers Calif. Acad. Sci., vii, 182, 1900, 



and synonymy. 



Distribution, Farallone Islands, California, to San Bartolome Bay, 

 Lower California. Mediterranean; Cape Verde Islands; Bermudas; 

 Porto Rico ; Cuba ; Key West. 



ALPHEUS BELLIMANUS Lockington. 



Distribution. from Monterey to San Diego, California. Chile (Cou- 

 tiere). 



ALPHEUS BARBARA Lockington. 



Habitat. Santa Barbara, California. 



According to Coutiere, probably the same as A. macrocheles (Hail- 

 stone). 



ALPHEUS CALIFORNIENSIS Holmes. 



Habitat. San Pedro, California. 



ALPHEUS EQUIDACTYLUS Lockington. 

 Distribution. Monterey to Santa Barbara, California. 

 According to Coutiere, this is Alpheopsis trispinosus (Stimpson). 



Genus Betaeus Dana. 



BETJEUS HARFORDI Kingsley. 

 Distribution. Point Arena to Catalina Island, California. 



LONGIDACTYLUS Lockington. 

 Distribution. San Pedro to San Diego, California. 



BETAEUS HARRIMANI sp. nov. 



Female, with eggs. Carapace compressed, upper line nearly hori- 

 zontal ; frontal margin nearly straight, with a broad, shallow, almost im- 

 perceptible median sinus, and a deeper sinus just outside the eye. Basal 

 scale of the antennules broad at base (the breadth of each equaling the 

 interspace), narrowing distally, and somewhat scythe-shaped, curving 

 slightly inward toward the extremity, which reaches the distal third of 



