108 RATHBUN 
Family ALPHEIDA, 
Genus Alpheus Fabricius. 
ALPHEUS DENTIPES Guérin. 
Alpheus dentipes GUERIN, Exp. Scient. Morée, part. Zool., 39, pl. XXVII, 
fig. 3, 1832. 
Alpheus clamator HOLMES, Occas. Papers Calif. Acad. Sci., vil, 182, 1900, 
and synonymy. 
Distribution.—Farallone Islands, California, to San Bartolomé 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- 
tiére). 
ALPHEUS BARBARA Lockington. 
fTabitat,—Santa Barbara, California. 
According to Coutiére, probably the same as 4. macrocheles (Hail- 
stone). 
ALPHEUS CALIFORNIENSIS Holmes. 
Habitat.—San Pedro, California. 
ALPHEUS EQUIDACTYLUS Lockington. 
Distribution.— Monterey to Santa Barbara, California. 
According to Coutiére, this is Apheopsis trispinosus (Stimpson). 
Genus Betzus Dana. 
BETAZUS HARFORDI Kingsley. 
Distribution.—Point Arena to Catalina Island, California. 
BETAUS LONGIDACTYLUS Lockington. 
Distribution.—San Pedro to San Diego, California. 
BETAUS 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 
