. Contributions to North American Ichthyology [microform] : based primarily on the collections of the United States National Museum. Ichthyology; Fishes, Fresh-water; Fishes; Ichtyologie; Poissons d'eau douce; Poissons. GENUS MYXOSTOMA. 113 and lips, although the speeies of Minytretna was inadvertently included in it. Tlie most important generic feature, the tricellular air bladder, was Qrst noticed by Professor Cope. I have seen fit to changfi the orthography of the name from Moxontoma to Myxostoma, in accordance with its api)areiitetymology. This change is rather desirable from the fact that
. Contributions to North American Ichthyology [microform] : based primarily on the collections of the United States National Museum. Ichthyology; Fishes, Fresh-water; Fishes; Ichtyologie; Poissons d'eau douce; Poissons. GENUS MYXOSTOMA. 113 and lips, although the speeies of Minytretna was inadvertently included in it. Tlie most important generic feature, the tricellular air bladder, was Qrst noticed by Professor Cope. I have seen fit to changfi the orthography of the name from Moxontoma to Myxostoma, in accordance with its api)areiitetymology. This change is rather desirable from the fact that it tends to avoid confusion, the name Moxostoma having been commonly used in couucction with a (lifterent genns. Tlie genus Myxostoma contains two well marked sections, typified respectively by M. velatum and M. macrolepklotum, and characterized by the form of the mouth and lower lip : that of M. vehtta being as in the jenus Erimyzon; that ot M. macrokpidotum being of the character most |comuion in this genus. â â¢â : â ' â v = :â =,:' 'V'" ' Getierio Characterisations. MoxosTOMA Rafiiiesqiio, 1820.â" Body oblong, conipreseed; head compressod, eight doiuiiiiil rays, dorsal liii conimo ly lougitudiaal; tail commonly unequally ;â Iclil/ii/o/ofyia 0//ieH8i8, p. 54.) [Tkkkti' Rafinesqno, 1820.â" Body elongate cylindrical oi somewhat qiiadrangu- ir.!) alHl():iiinal rays, dorsal commonly small; tail equally forked. An exten- livesubgenus, to which belong all the following Hpecies of LeSneur: Caiirvolug, C. rolepidotw, V. hunrontrum, C. nigricans, C. vittatiia, C. maculosus, C. sucetta, besides eC teres and C. oblongua of Dr. ;â(/c/i. Oh. p. 57.) IhYCiiosTOMTH Agassiz, 18.')5.â"In respict to form of body and the structnro and teitinn of the fins, this genns dees not dilfcr from Catostomns proper, but may bo iigiiish( ur two in the posterior field and one on each side limiting that liild from the lii-lds; thos» of
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