. Synopsis of the fishes of North America [microform]. Fishes; Poissons. 31. CYPRINID^. 145 wliicli todistiiifjiiiHlj {^ and Hpocioa. Our goiiom aro mostly very closely iclatcul, and nn) .separated by cliaracterH whieli, althoiigU reason- ably constant, are often ofslijjflit stnietnral inipoitaniH'. From time to time, (lilFerent authors liav(^ proposed to throw most of thesis ^ronjis into tiie ^enus LvuciscnH, a pro(!edure whieh, without further diseussion, may be Haid to have al\ ays led to confusion. The H[)rin}:f or breeding dress of the njalo fishes is often peculiar. The top of the
. Synopsis of the fishes of North America [microform]. Fishes; Poissons. 31. CYPRINID^. 145 wliicli todistiiifjiiiHlj {^ and Hpocioa. Our goiiom aro mostly very closely iclatcul, and nn) .separated by cliaracterH whieli, althoiigU reason- ably constant, are often ofslijjflit stnietnral inipoitaniH'. From time to time, (lilFerent authors liav(^ proposed to throw most of thesis ^ronjis into tiie ^enus LvuciscnH, a pro(!edure whieh, without further diseussion, may be Haid to have al\ ays led to confusion. The H[)rin}:f or breeding dress of the njalo fishes is often peculiar. The top of the head, teeth will be found, in front of which is sometimes'a set of 1 or 2 smaller ones. The tw» sides are not always synimotrical. "Teeth 4-4" indicates a single row of 4 on each pliaryngeal bone. " Teeth 2, 4-5,1" indicates 2 rows of teeth on each sideâon the ono side 4 in tho principal row and 2 in tho lesser, on tho other side 5 in the main row audi in the lesser. In the Leuciscine genera these teeth, or the principal ones, are raptaiorial, that is, hooked inward at their tips. A grinding or masticatory snrJEace i» an excavated space or groove usually at the base of the hook. A flattened or hov- elled edge soraotiraes simulates a masticatory surface, and in some of the species tho pinding surface is very narrow and - "nllned to but one or two of the teeth. In all cases. where the unmber of teeth is given \n tho apecijlc descriptions following, this number baa been voriiied on typical examples cither by Professor Cope or the writers. Bull. Nat. Mus. No. 16 10 « ' SI â¢.' it - mm ! '. > '( â f. -] ^M^Ti. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Jordan, David Starr, 1851-1931; Gilbert, Charles H. (Charles Henry), 1859-1928. Washington : G. P. O.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectfishes, bookyear1882
