. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. Upper views of heads of typical form, d, St. Malo (a); var. ridibunda, £,Capljina, Herzegovina (b); and var. chinensis, §, Broughton Bay, Corea (c). § nat. size. The width of the head varies between 1 and 1^- times its length in the typical form (28 : 32 in ? from Havre), be- tween 1 and 1£ times in the var. ridibunda (= in some specimens from Herzegovina, France, Portugal, Algeria, Asia Minor, Persia, 36 : 43 in ? from Kiev), between 1 and I^q in the var. chinensis. The width
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. Upper views of heads of typical form, d, St. Malo (a); var. ridibunda, £,Capljina, Herzegovina (b); and var. chinensis, §, Broughton Bay, Corea (c). § nat. size. The width of the head varies between 1 and 1^- times its length in the typical form (28 : 32 in ? from Havre), be- tween 1 and 1£ times in the var. ridibunda (= in some specimens from Herzegovina, France, Portugal, Algeria, Asia Minor, Persia, 36 : 43 in ? from Kiev), between 1 and I^q in the var. chinensis. The width of the interorbital space is ^ to ^ that of the upper eyelid in specimens of the typical form from St. Malo and Paris, ^ to § in others from Poitiers. In the var. ridibunda, taking only specimens from Germany and Austria-Hungary into consideration, it is between ^and j, but it may be exceptionally § (<? from Laaerberg near Vienna) ; |- (in a large ? from Damascus) is another excep- tion. In the var. chinensis it varies between § and §. The head varies much in shape, and exceptionally may even be not unlike that of a typical R. temporaria ( ? , var. ridibunda, from Crete). The canthus rostralis is always very obtuse ; I have never seen a specimen in which it may be said to be " strongly marked," as stated by Bolkay in his description of R. chinensis. The Hind Limb. That there are very considerable differences in the pro- portions of the hind limb, I was the first to point out, and I have proposed to make use of these for defining varieties, with the necessary restrictions in the diagnoses imposed by. 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 London, Taylor and Francis, Ltd
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Keywords: ., bookce, booksubjectbotany, booksubjectgeology, booksubjectzoology
