Leander tenuicornis (Say, 1818)

Palaemon tenuicornis Say, 1818: 249 .

Leander tenuicornis — Kingsley, 1878: 66; Holthuis, 1951b: 155, pl. 41 (with synonym).

Material examined: 14o48´30”S, 38o55´00”W, 20m, 2 female (3, 4.9mm), MNRJ 17727; 15o34´08”S, 38o49´81”W, 20m, 1 ovigerous female (5.5mm), MNRJ 17730; 16º07´30”S, 38º10´52”W, 40m, 1 male (4mm), MNRJ 17731; 14o48´30”S, 38o55´00”W, 20m, 1 ovigerous female (5.3mm), 1 female (3mm), 2 male (3, 4mm), MNRJ 18639; 14o48´30”S, 38o55´00”W, 20m, 4 female (1,.2, 2.1, 2.9mm), MNRJ 19462.

Diagnosis: Carapace with rostrum long, larger in female than in male, upper margin with 8–14 teeth, lower margin with 5–7 teeth; antennal and branchiostegal spines present; branchiostegal groove absent; cornea with dark colored horizontal bands. Stylocerite reaches two-thirds of basal antennular article; anterolateral tooth of basal article reaches distal margin of second antennular article. Scaphocerite with distal tooth strong, overreaching end of scale (modified from Holthuis, 1952a).

Distribution: Tropical and Subtropical seas all over the world, except for the American western coast. Off Brazilian coast (Maranhão to São Paulo and Rocas Atoll (03o 52'S, 0 33o 48'W)).

Remarks: This species was recently redescribed and figured in the paper of Cardoso & Young (in press) from Rocas Atoll material. The material herein examined totally agrees with this redescription and figures.