Alpheus fasciatus Lockington 1878

Alpheus fasciatus Lockington, 1878

Alpheus fasciatus Lockington, 1878:478.—Coutière, 1899:29; 1905:902.—D. Banner and A. Banner, 1981:8.

DESCRIPTION.—The following is the description of Lockington (1878:478) with some modification of terms.

Small; carapace smooth; no ocular spines; eye-shields scarcely produced forwards; rostrum about equal to diameter of eye; surface between rostrum and eyes slightly depressed, but with no distinct sulcus.

Basal spine [stylocerite] of antennule longer than first segment of peduncle; segments of peduncle nearly equal in length; inner branch of flagellum twice as long as outer, and rather longer than carapace.

Small spine present on basal joint [basicerite] of antenna below; spine of basal scale [scaphocerite] about equal to peduncle; flagella wanting or broken in all the specimens under examination.

Third maxillipeds reaching to end of basal joint of antennae.

Meri of first pair of pereopods without spines; major chela smooth, nearly cylindrical, tapering towards movable finger; finger smooth, semicircular in profile, length of palm, and working vertically. Minor chela very small, smooth, cylindrical, slender, movable finger equal to palm; immovable finger as long as movable finger; long hairs on inner faces of fingers.

Carpi of second pair of pereopods five-segmented; second segment length of first, but equal to third and fourth together; fifth slightly shorter than second. Posterior pairs of pereopods cylindrical joints; propodi spinulose beneath.

Telson elongate, tapering, rounded at end.

Color after a short time in alcohol: carapace and abdomen alternately banded with bright red and white; major chela red, with marblings of white in some cases.

Length of a large female 18 mm.

TYPE-LOCALITY.—Port Escondido, Gulf of California.

DISTRIBUTION.—Only from the type-locality.