Alpheus barbara Lockington 1878

Alpheus barbara Lockington, 1878

Alpheus barbara Lockington, 1878:471.—Kingsley, 1883:117; 1899:716.—Coutière, 1899:29.—Holmes, 1900:185.—Rathbun, 1904:108.—Word and Charwat, 1976:40.—Wicksten, 1984:187.

Alpheus clamator.—Kingsley, 1878a:197 [not Alpheus clamator Lockington, 1877.]

Crangon barbara.—Schmitt, 1921:76.

DESCRIPTION.—The following is the description by Kingsley (1878a: 197) with some modification of terms:

Basal spine of antennule [stylocerite] stout, short, not reaching to second segment of peduncle; third segment half as long as preceding. Antennae without spine on basal joint [basicerite]. Antennal scale [scaphocerite] narrow, spine at antero-exterior angle acute, slender, reaching to end of antennular peduncle.

Third maxilliped rather broad, extending slightly beyond antennal scale.

Chelae of first pair of pereopods unequal. Merus smooth, with very slender spine on distal portion above. Major chela compressed, constriction of each margin at about middle, spine above articulation of movable finger, behind which sulcus running obliquely across superior margin. Second spine on outside; immovable finger slender; movable finger compressed, semicircular in outline viewed from side, slightly longer than immovable finger.

Minor chela with both margins constricted; superior margin of palm tuberculate; spine above articulation of movable finger; fingers about equal to palm, completely closing.

Ischia and meri of second pair of pereopods equal; carpus five segmented, first two segments equal, and each as long as third and fourth; third segment equal to fourth; fifth segment nearly as long as first.

Meri of posterior pairs of pereopods without spine. Propodus spinulose on inferior margin. Dactylus slender.

TYPE-LOCALITY.—Santa Barbara, California.

DISTRIBUTION.—Santa Barbara, California.