Petrolisthes hastatus Stimpson, 1858

Petrolisthes hastatus Stimpson, 1858: 228, 241 (type locality: Kikaisima, Amami-Osima, Ryukyu Islands); 1907: 184, pl. 22, fig. 4.— Miyake, 1943: 54, 62, text-figs. 5, 6.— Haig, 1964: 360; 1979: 124, fig. 5.— Nakasone & Miyake, 1971: 5, figs. A–D.

Porcellana inermis Heller, 1862: 524 (type locality: Nicobars).

Petrolisthes inermis .—de Man, 1893: 288, pl. 7, fig. 1; 1902: 691, pl. 23, fig. 36, 36a–d.

Petrolisthes tenkatei de Man, 1893: 289, pl. 7, fig. 2 (type locality: Endeh, Flores).

Petrolisthes n. sp. — de Man, 1902: 692, pl. 23, fig. 37, 37a–c.

Material examined. New Caledonia. Cap Mangrove, coll. B. Richer de Forges, 15 Aug. 1994, 1 male CL 9.4 mm, 1 female CL 6.8 mm. Poingam, intertidal, 10 May 1997, coll. B. Richer de Forges, 1 male CL 8.1 mm.

Remarks. The taxonomy and intraspecific morphological variations of this species are discussed in depth by Haig (1964) and Nakasone & Miyake (1971). The variations have been known for the length-breadth ratio of the carpus of the cheliped and development of the dorsoflexor teeth, development of a tuft of plumose setae in the gape of the fingers of cheliped, and armature on the extensor margins of the meri of the amburatory legs.

Distribution. Indonesia, Sulu Islands; then westward through Malay Archipelago to east coast of India; Singapore northward to Tokara Islands, Japan; New Guinea eastward to New Caledonia, Fiji, and Samoa; intertidal, under rocks (Haig 1979).