108 RATHBUN 



Family ALPHEID&. 

 Genus Alpheus Fabricius. 



ALPHEUS DENTIPES Gue"rin. 



Alpheus dentipes GU^RIN, Exp. Scient. Moree, part. Zool., 39, pi. xxvn, 



fig. 3, 1832. 

 Alpheus clamator 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. 



BET^EUS HARFORDI Kingsley. 

 Distribution. Point Arena to Catalina Island, California. 



BETAEUS LONGIDACTYLUS Lockington. 

 Distribution. &s\ 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 



