American Sjjecies o/^ima. 4i;i 



3. Rana septentrionalis, liaird, 1855. 

 Ik. xinKtitd, Hiiird, lf")5. 



Southern Canada and New York to Montana and Utah. 



4. Ratia clamitaua, Daud., 1801. 



R. r/amata, Daud., 1S03.— 7i'. fnntinah'.*, I..>coiito, 18l'o.— 7?. flnvl- 

 1'in't/i.t, Ilarl., iH-jr,. — H, /loricDiiensi'i, Ilolbr., 1842, — li. nii/ricans, 

 Apass., ISoO. — It. iiif/reKcens, c/fonatory Lecoiite, 1855. — Ji. vlatnitans 

 nielanota, Rboads, 18U5. 



North America, east of the Rocky ^Mountains, from 

 Canada (Quebec, Ontario) to Florida and Louisiana. 



5. Rana onca, Cope, 1875. 

 li. drai/loui 07ica, Cope, 1889. — R. fisclieri, Stejne^., 1893. 



Utah and Nevada. 



6. Rana virr/atipes, Cope, 1891. 



New Jersey (Atlantic City and. Lakehurst) and North 

 Carolina (Lake Ellis). 



7. Rana montezumcB, Baird, 1855. 

 R. ailtrita, Troscliel, 18G5, — R. montezuma; concolor, Cope, 1887. 

 Plateau of Mexico, Tabasco, Tehuau tepee. 



8. Rana halecina. L., 1766 *. 



R. pipiens,^c\n^h.f 1782. — R. utricularia, lltivX., 1825. — R. oxyrhyn- 

 chu8, Hallow., 18oG. — R. berlamUcri, Baird, 1859. — R. forreri, 

 Ijouleug., 1883. — R. viresceiis, Garni., 1884. — R. halecina spheno- 

 cephala, brachycephftla, austricola, Cupe, 188(3. — ? R. tri/obata, 

 Mocquard, 1899. — R. omiUemnna, Ciioth., 1900. 



North America as far north as 52°, not extending west of 

 the Sierra Nevada, Mexico and Central America as far 

 soutii as Costa llica. Up to 8000 ft. altitude in Colorado, 

 8500 ft. in Mexico, 5000 it. in Costa Rica. 



It may l)e possible to define three principal varieties : 

 sphenocephala, Co[)e, forreri, Blgr., and austricola, Cope 

 {lecontii, Citlir., Brocchi, niyricuiis, Brocchi). 



* This name, latinised by Linnieus from Ivalui'a ' Silllioppertosser,' 

 appears iu tlio .synonymy of R. ovellatu. 



