. The Batrachia of North America [microform]. Amphibians; Amphibiens. THE BATIIACIIIA OF NOUTll AMERICA. lOf) pliiM t'xleiuls from this to tlio guhir, iiiclosiii{( an ovate tMilargcd area, Mini a sln)rt one to the orbit incloses a postorbital siibroiind and smaller ai'iM. 'riiciMnnniissureof the mouth is more undulate in males than in lemales, liiit both present a slight elongation of the symphysis, produced exter- II illy by a pad of crypts. The M'idth of the head enters the length .").(>(! times. The vomerine teeth are often wanting, and when present iiie minute and few. Their basis
. The Batrachia of North America [microform]. Amphibians; Amphibiens. THE BATIIACIIIA OF NOUTll AMERICA. lOf) pliiM t'xleiuls from this to tlio guhir, iiiclosiii{( an ovate tMilargcd area, Mini a sln)rt one to the orbit incloses a postorbital siibroiind and smaller ai'iM. 'riiciMnnniissureof the mouth is more undulate in males than in lemales, liiit both present a slight elongation of the symphysis, produced exter- II illy by a pad of crypts. The M'idth of the head enters the length .").(>(! times. The vomerine teeth are often wanting, and when present iiie minute and few. Their basis is a ridge, whi(!h extends from behind (lie middle of the posterior nares Jicross the palate with a posterior con- vexity. The parasplienoid patches are small and not in contact; they do not extend to opposite the middle of the orbits. The median toes are elongate, and as in I). orliroplKva; they fail to meet by four interspaces when pressed to the side. The tail has a char- acteristic form, which is invariable at all periods; near the base the sec- tion is trigonal; the dorsal keel increases in elevation and becomes a narrow tin i»osteriorly ; the extremity is attenuated. Its length is just ecpial to that of the remainder of the ^/ ^ f. 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 Cope, E. D. (Edward Drinker), 1840-1897. Washington : G. P. O.
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Keywords: ., bookcentury1800, bookdecade1880, bookpubli, booksubjectamphibians
