. Bulletin - United States National Museum. Science. 424 BULLETIN 188, UNITED STATES NATIONAL MUSEUM SO it is well known to the coastal people who have given it names borne by no other species: Pla hua talcua (lead-head fish) and fla hua ngem (silver-head fish) in allusion to the lustrous spot, and pla hua ngon (scoop-head fish). In recent years this fish has usually been called Panchax panchax. The genus Panchax established by Cuvier and Valenciennes in 1846, with Hamilton's Esox panchax becoming the type species by tauto- nymy, was a synonym of Aplocheihis, which has the same type species. G
. Bulletin - United States National Museum. Science. 424 BULLETIN 188, UNITED STATES NATIONAL MUSEUM SO it is well known to the coastal people who have given it names borne by no other species: Pla hua talcua (lead-head fish) and fla hua ngem (silver-head fish) in allusion to the lustrous spot, and pla hua ngon (scoop-head fish). In recent years this fish has usually been called Panchax panchax. The genus Panchax established by Cuvier and Valenciennes in 1846, with Hamilton's Esox panchax becoming the type species by tauto- nymy, was a synonym of Aplocheihis, which has the same type species. Genus ORYZIAS Jordan and Snyder Oryzias Joedan and Snyder, Proc. U. S. Nat. Mus., vol. 31, No. 14S6, p. 289, 1906. (Type, Poecilia latipes Temminck and Schlegel.) The name Oryzias is equivalent to Aplocheilus of Weber and de Beaufort. The applicability of this name in its present connotation was discussed by the writer (Smith, 1938b). There are various species of India, Burma, Malaya, and the Indo-Australian Archipelago in ad- dition to the type species {Poecilia latipes) from the ricefields of Japan. The single species known from Thailand appears to be unde- scribed. ORYZIAS MINUTILLUS. new species Figure 95 Description.—Body compressed, head and anterior part of back de- pressed and flattened; depth of body in standard length; caudal peduncle longer than deep; head in standard length; eye large, scarcely reaching above dorsal profile of head, about in head; snout in eye and greater than interorbital space; mouth extending distance from tip of snout to eye; scales in lengthwise series 27 or 28, in transverse series, 10, in predorsal region 19; a broad anal Figure 95.—Oryzias minutillus, new species: Type ( No. 107958). Drawn by Mrs. Aime M. Awl. Fins: Dorsal rays 6, longest ray in head, origin of fin slightly before posterior base of anal; caudal fin as long as head, its margin rounded; anal rays 19, longest ray equal to longest do
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