Pontonia stylirostris Holthuis 1952

Pontonia stylirostris Holthuis, 1952

Pontonia stylirostris Holthuis, 1952c: 169, figs. 82–84 [type locality: between Pulau Misool and New Guinea; 1°42.5'S, 47.5°47.5′E; 32 m].

DIAGNOSIS.—Rostrum overeaching anteriorly extended eyes, subcylindrical, armed dorsally with 2 subapical teeth, unarmed ventrally; carapace with antennal spine, lateral margin not distinctly produced anteriorly; telson bearing 2 pairs of conspicuous dorsolateral spines, anterior pair reaching nearly to bases of posterior pair; antennal scale with short distolateral spine reaching about to level of distalmost margin of blade; 3rd maxilliped with penultimate distinctly longer than terminal segment; 3rd pereopod with dactyl biunguiculate, elongate, bearing 4–6 teeth on flexor margin; maximum postorbital carapace length about 4 mm.

RANGE.—Oman, Tanzania, Indonesia, and Queensland, Australia; 32–45 m, not known to be associated with ascidiaceans.

*Pontonides Borradaile, 1917

Pontonides Borradaile, 1917:387 [type species, by monotypy: Pontonia maldivensis Borradaile, 1915:213; gender: masculine].

DIAGNOSIS.—Rostrum not overreaching anteriorly extended eyes, unarmed dorsally, lateral carina expanded into broad supraocular eave; carapace about as wide as high, dorsal profile somewhat convex, anterior margin produced anteriorly as convex lobe, without longitudinal branchiostegal suture, with antennal spine, without hepatic spine, orbital margin incomplete posteriorly; abdomen with pleura of 5th somite rounded or acute; telson not curving ventrad, posterior margin not incised, median and submedian pairs of posterior spines not curving ventrad, dorsolateral spines small; antennal scale well developed; mandible without palp; 3rd maxilliped without exopod; 4th thoracic sternite without slender median process; 1st pereopod with carpus entire, not subdivided; 2nd pereopod with chela not borne in vertical plane, fingers not provided with socket and plunger closure, movable finger not ventrad, not semicircular; 3rd pereopod composed of 7 segments, merus and ischium not fused, dactyl simple, not bearing hoof-shaped protuberance; uropod with lateral branch bearing at least 1 movable lateral spine.

RANGE.—Red Sea and eastern Africa to Japan, Philippines, Indonesia, Great Barrier Reef of Australia, and Caroline and Galápagos islands; associated with alcyonarian, scleractinian, and antipatharian corals.