Periclimenes alcocki

Periclimenes alcocki Kemp, 1922

Periclimenes (Periclimenes) alcocki Kemp, 1922:154, figs. 21–24 [type locality: Laccadive Sea; 9°34′57″N, 75°36′30″E; 743 m].—Kubo, 1940b:33, figs. 1, 2.

Periclimenes alcocki.—Bruce, 1981c:190, figs. 1,2; 1985b:231, fig. 1.

DIAGNOSIS.—Integument smooth, not pitted, on lateral areas of carapace and abdomen; rostrum not overreaching antennal scale, palaemonoid, directed slightly anteroventrad except near tip, rostral formula 2 + 6–8/2–4, posteriormost tooth somewhat isolated from remainder of dorsal rostral series, situated posterior to level of hepatic spine; carapace without supraorbital or post-orbital spine, hepatic spine larger than antennal spine, arising posteroventral to latter, not extending beyond anterior margin of carapace; orbital angle ovate; abdomen without compressed dorsal prominence on 3rd somite, 6th somite about 1 times as long as 5th; telson with 3–5 pairs of lateral spines; eye with cornea small, hemispherical, not produced distally; antennular peduncle with 1 distolateral spine on basal segment; antennal scale little more than twice as long as wide, lateral margin convex, distolateral tooth not reaching level of distal margin of blade; 4th thoracic sternite without slender median process; 1st pereopod overreaching antennal scale, fingers not pectinate on opposable margins; 2nd pereopods unequal, with fingers as long as palm, carpus as long as palm, barely longer than distal width, without distal spines, merus without distal tooth on flexor margin; 3rd pereopod with dactyl not subdistally truncate, without denticulate lobe on flexor margin, biunguiculate, flexor margin slightly concave, propodus with very few spinules at distal end of flexor margin, not segmented; 5th pereopod not overreaching antennal scale; uropod overreaching extended telson; maximum postorbital carapace length about 12 mm.

RANGE.—Madagascar, Laccadive Sea, Japan, Philippines, and Australia; 190–743 meters.