Australocarcinus palauensis Davie & Guinot, 1996

(Figs. 93 D; 94C, D, I; 99E, F)

Australocarcinus palauensis Davie & Guinot, 1996: 282, figs. 5, 8 [map] [Belau = Palau].—Ng et al. 2008: 76 [in list].

Type material. Holotype female (5.8 × 7.1 mm) (USNM 277853), Belau [= Palau], Addeids River, Babelthuab I., in small fast tributary, coll. D. Frey, 5.03.1946.

Diagnosis (modified from Davie & Guinot 1996). Carapace (Fig. 93 D; Davie & Guinot 1996: fig. 5A) subrectangular, 1.2 wider than long; front bilobed, with slight median cleft; dorsal surface smooth. Anterolateral margins arcuate, cristate, without teeth. Orbits short. Eye peduncle short, does not fill orbit, cornea enlarged. Third maxilliped (Fig. 94 D, I) merus quadrate, ischium quadrate, slightly longer than merus. Chelipeds subequal in length; cutting margins of both chelipeds with broad, shallow teeth larger in major chela (Fig. 95 E, F).

Proportionally short ambulatory legs (Fig. 93 D). Meri smooth. Somites of female pleon with slightly convex lateral margins; telson proportionally long (Fig. 99 E). Sterno-pleonal cavity of female shallow, vulvae not fully developed (Fig. 99 F). Male unknown.

Remarks. The species is known from a single young female specimen (pleon, pleopods and vulvae not mature, Fig. 99 F) so the morphology of males, including the pleon, posterior part of thoracic sternum, G1, and G2, remains unknown.

Distribution. Known only from Belau [= Palau] (western Pacific Ocean); rivers.