Conchodytes monodactylus

Conchodytes monodactylus Holthuis, 1952

Conchodytes monodactylus Holthuis, 1952c:200, figs. 96–98 [type locality; the type series came from two localities: Kaohsiung, Taiwan, in Pinna sp., and Lesser Sunda Islands, Indonesia].

DIAGNOSIS.—Telson with 2 pairs of dorsolateral and 3 pairs of posterior spines; 1st pereopod with carpus and merus subequal in length; 3rd pereopod with dactyl bearing single distal spine and basal process well developed with minute marginal tooth; maximum postorbital carapace length about 13 mm.

RANGE.—Singapore, Hong Kong, Amakusa Island, Japan, Indonesia, and Australia; in pinnid bivalve mollusks.

*67. Conchodytes nipponensis (De Haan, 1844)

Hymenocera niponensis De Haan, 1844: pl. 46: fig. 8 [corrected to H. nipponensis by plenary powers of the International Commission on Zoological Nomenclature, 1956; type locality: Japan].

Pontonia nipponensis.—De Haan, 1849:180.

Conchodytes nipponensis.—Kemp, 1922:282, fig. 104.—Bruce, 1977e:97, fig. 1.

DIAGNOSIS.—Telson with 3 pairs of dorsolateral and 2 pairs of posterior spines; 1st pereopod with carpus averaging subequal to merus; 3rd pereopod with dactyl bearing 2 strong, divergent, spine-like teeth, basal process well developed with small marginal tooth; maximum postorbital carapace length perhaps as much as 15 mm.

MATERIAL.—PHILIPPINES. Tilik, Lubang Island; [13°49′N, 120°12′E]; 14 Jul 1908: 1 male [7.0] 1 ovig female [9.6].

RANGE.—Until reported by Bruce (1977e:97) from a single, possibly juvenile specimen from Keppel Bay, Queensland, Australia—on the mainland coast opposite Heron Island, from where Bruce (1981e) recorded no less than 100 other pontoniine species—C. nipponensis was known only from Japan. It is here noted that it was collected in the Philippines more than 80 years ago. It has been taken in Japan from both pectinid and pinnid bivalve mollusks.