. The biology of the amphibia. Amphibians. RELATIONSHIPS AND CLASSIFICATION 487 ent in the adult, sacral vertebra free with biconvex centrum, presacral vertebrae not less than eight, tongue and eyelids present. The Discoglossidae include only two European, one Eurasian, and one Philippine genus. These may be readily distinguished by their external form, the European species being. b c Fig. 154.—Male Ascaphus truei: A. Showing the cloacal appendage of this sex. B. The appendage viewed ventrally. C. The same fully distended, showing the spines which occur within the orifice of the cloaca. well k
. The biology of the amphibia. Amphibians. RELATIONSHIPS AND CLASSIFICATION 487 ent in the adult, sacral vertebra free with biconvex centrum, presacral vertebrae not less than eight, tongue and eyelids present. The Discoglossidae include only two European, one Eurasian, and one Philippine genus. These may be readily distinguished by their external form, the European species being. b c Fig. 154.—Male Ascaphus truei: A. Showing the cloacal appendage of this sex. B. The appendage viewed ventrally. C. The same fully distended, showing the spines which occur within the orifice of the cloaca. well known. Bombina includes four species of depressed water toads, all variegated below, with black and some other tone, either white, red, or orange. Two of the species are European and two Chinese. Discoglossus includes only a single species, pictus, from southwestern Europe and northwestern Africa. It is a Rana-like frog, about the size of a Pond Frog, R. clarnitans, and grayish in color, often with a pleasing pattern of. 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 Noble, Gladwyn Kingsley, 1894-1940. New York : McGraw-Hill
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Keywords: ., bookcentury1900, bookpublishernewyorkmcgr, booksubjectamphibians
