[Scientific results of the Philippine cruise of the Fisheries steamer Albatross, 1907-10.—No. 13.] Descriptions of fifteen new fishes of the family Cheilodipteridae, from the Philippine Islands and contiguous waters

Lewis Radcliffe
1912 Proceedings of the United States National Museum  
The new species of Cheilodipteridse herein described^were collected on the Pliilippine expedition of the LTnited States Bureau of Fisheries steamer Albatross. It is noteworthy that three of them were secured at a single haul of the beam trawl at station 5442, on the west coast of Luzon. One species, Amia hyalina, was taken at Talisse Island, north of Celebes, outside the Philippine Archipelago. Genus AMIA Gronow. A new subgenus, Amioides, is herein described. Because of the unnatural groupings
more » ... nnatural groupings resulting from subdivisions of the genus based on single characters, such as presence or absence of serrations on the preopercle, character of teeth, character of lateral line, etc., it has seemed preferable to await a more thorough study of the whole group before deciding whether Amioides is entitled to generic rank. AMIA DIENC^A Smith and RadcliSe, new species. Plate 34, fig. 1. Dorsal vi-i,9 ; anal ii,8 ; scales 4 + 8-24. General form elliptical-ovate; head 2.46, pointed; dorsal contour from tip of snout to insertion of spinous dorsal straight, steep; body • In the study o> this collection the writer has been associated with Dr. Hugh M. Smith, who becomes joint author of the new genera and species herein described. ' The measurements herein used represent the ratio between length of part described and the standard length from tip of snout to end of last caudal vertebra, with the exception of eye, snout, maxillary, interorbital, fins, and least depth of caudal peduncle, which are expressed in ratio to head measured from tip of snout to posterior edge of opercle (not including opercular flap). The length of caudal peduncle is measured between the verticals drawn at base of last anal ray and at end of last vertebra. Even when the jast dorsal and anal rays are cleft to base they are still counted as single rays. The scale formula indicates the number of scales in a transverse row from insertion of dorsal downward and backward to and including lateral line and the number of transverse rows above the lateral line, between upper angle of opercle and end of last caudal vertebra. deep, strongly arched dorsally, ventral outline comparatively straight, depth 2.62; caudal peduncle slender, compressed, of nearly uniform depth, depth 2.50, length 1.70; eye 2.76, prominent; snout 4.50, short; nostrils well separated, anterior circular, near edge of snout, posterior elUptical, close to eye; maxillary 1.80, reaching vertical from posterior margin of eye; interorbital 4.06; vertical margin of preopercle with a few weak denticulations, angle, horizontal margin, and crest smooth; bands of villiform teeth, broadest in front, on jaws; vomerine and palatine teeth villiform, slightly larger than the others, in a single row along the ridge of the bone; scales small, regular, ctenoid; lateral Une arched. First dorsal spine small, second 2.13, longest and strongest; the second dorsal rounded, longest ray 1.86; caudal forked; anal 2, similar to second dorsal; ventrals 1.97; pectorals 1.60. i Color in alcohol: Ground color cream-buff; a stripe obscure anteri-1 orly (probably brilHantly colored in life), dusky black posteriorly, about three-fourths width of eye, extends from scapula with a downward sweep, becoming horizontal on caudal peduncle, to tips of median caudal rays; lines of lighter color, most distinct anteriorly, margin this stripe; a walnut-brown bar as wide as pupil from eye to base of pectoral; fins hyalin. Type.-Cat. No. 70243, U.S.N.M., a specimen 4.1 cm. in length, from Sulade Island, Jolo. AMIA PARVULA Smith and Radclifie, new species. Plate 34, fig. 2. Dorsal vi-i,9 ; anal ii,8 ; scales 3 + 6-24. General shape fusiform, compressed; head 2.60, large; body slender, arch of back greater than ventral surface, depth 3; caudal peduncle tapering, slender, compressed, depth 2.75, length 1.42; eye 3, prominent; snout 4; mouth nearly horizontal, tip of lower jaw projecting; maxillary 2.25, barely reaching vertical from middle of eye; interorbital 3.97, narrow, fiat; preopercular margin finely serrate, crest smooth; teeth on upper jaw small, unequal, cardiform,
doi:10.5479/si.00963801.41-1868.431 fatcat:4ssrv2gpmvfoddawzj667nw3om