. The fishes of North and Middle America [microform] : a descriptive catalogue of the species of fish-like vertebrates found in the waters of North America, north of the Isthmus of Panama. Fishes; Fishes; Poissons; Poissons. â # wmmmm%r,'^9f*. Jordan and Evcrmann.âFishes of North America. 818J>. ilistal parts soft, not l»raucbed, contiuiions with the hard jiarts; basal pait of ])ectoral spiue grooved posteriorly, weakly serrate above the -roove. Ixtlariii8 has some of the characters of the genus Lcptopa, notably the ilentition of the upper jaw ibe weakness of the lin-apines; but it ;i
. The fishes of North and Middle America [microform] : a descriptive catalogue of the species of fish-like vertebrates found in the waters of North America, north of the Isthmus of Panama. Fishes; Fishes; Poissons; Poissons. â # wmmmm%r,'^9f*. Jordan and Evcrmann.âFishes of North America. 818J>. ilistal parts soft, not l»raucbed, contiuiions with the hard jiarts; basal pait of ])ectoral spiue grooved posteriorly, weakly serrate above the -roove. Ixtlariii8 has some of the characters of the genus Lcptopa, notably the ilentition of the upper jaw ibe weakness of the lin-apines; but it ;iii)i(' closely resembles IcUihirux, and its relationship is probably with tliat genus. (Named for the liio Ixtla, the type locality of the tyjte sjx'cies.) 20S (a). 'S 1J.\I,*SAMS, Joidaii \ lleadl; depth 4i5; deptii of caudal peduncle 2A^ in head; eye 5^; snout 21; distance between eyes 2A; heiflit of dorsal 1=; length of base of (lorsa! 3; height of anal Ijj; length of base of anal 1; length of pectoral 11; ventrals Iji; 1; ]>. I, 6; A. 24. Body deep and somewhat com- pressed, deepest above ventrals, widest between itectorals; head narrow, not greatly depressed; eye large, nearer tip of snout than to posterior edge of opercle a distance e(|ual to diameter of eye; interorbital space convex; width of mouth '2i in head, lower jaw included; upper jaw pro- jecting a distance equal to diameter of i»upil; barbels 8; of the inferior ones the median pair shorter; distance between their bases equal to the diameter of pupil; the outer pair when extended directly backward reach the edges of gill covers; maxillary barbels longest, reachiu^,- upper angle of gill opening; nostril barbels reaching middle of pupil. Teeth in broad villiform bands on premaxillaries and dentaries, the band on upi)er jaw convex anteriorly, with a short, angular posterior extension on each side, no apparent division of the band at symphysis; baud on lower jaw broad anteriorly,
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisher, booksubjectfishes
