10 from Argentina (176.6-270.5 mm SL), 1 from Chile (225.0 mm SL), FAKU 42726, 42730, 42731, 42734, 42743, 42744, 42745, 42747; AP 681, 682, CP 601.
Description:
D 112-129; A 91-104; P27 (ocular side), 5 (blind side); GR 5-7+1+11-14=17-22; BR 7; LLS 114-131.
HL 26.4-28.0% of SL; ED 4.1-5.6; BO 6.4-8.5; BD 39.4-45.3; SN 5.7-6.3; IO 0.8-1.4; UJ 9.2-10.1; CP 9.3-10.3; P2L 3.6-5.5 (ocular side), 4.0-4.6 (blind side); DH 7.4-8.3; AH 7.1-8.7.
Body oval, elongate and extremely depressed, depth of body 2.2-2.7 times in SL. Head moderate in size, 3.7-3.9 times in SL. Upper profile of head slightly notched anterior to eye. Eyes on left side, upper parts of both eye-balls densely scaled by fine scales. Snout shorter than fleshy orbit. Lower eye slightly anterior to upper eye. Mouth small, upper jaw length 2.2-2.4 times in head, posterior margin of upper jaw extending slightly posterior to anterior margin of eye. Fine conical teeth in bands on both jaws, teeth on upper jaw larger than teeth on lower jaw on ocular side. Teeth on ocular side larger than teeth on blind side. No teeth on vomer or palatines. Nostrils on ocular side small, situated closely each other, anterior nostril round with a long flap posteriorly and posterior nostril round with a short flap posteriorly. Nostrils on blind side also small, situated near to dorsal margin of head, anterior nostril round with a short flap and posterior nostril round without a flap. Gill-rakers short. Interorbital region very narrow. Dorsal fin originating just anterior to upper eye. No pectoral fins. Pelvic fin on ocular side extremely larger than on blind side. Scales of body small, ctenoid on both sides. All unpaired fins also covered with fine ctenoid scales. Lateral line equally developed on both sides of body, nearly straight without supratemporal branch. Anus situated on median line, just anterior to anal fin between pelvic fins. Caudal fin found.
Distribution:
Both Chilean and Argentine Patagonia, also kown from the Subantarctic Sea.
Remarks:
Kotlyar (1978) recognized the subspecies, M. m. antarctica from the Antarctic Sea and M. m. maculata from the Patagonian Falkland Region.
(Izumi NAKAMURA)
Distribution of Mancopsetta maculata in Patagonia.