246 BATRACHIA SALIENTIA. 
Hab. Norva America, Texas.—MeExico, Pueblo and Valley of Mexico (Cope), Guana- 
juato and Guadalajara (Dugés). 
Crown of the head without projecting ridges, the interorbital space being rather flat 
and narrower than the supraciliary cover. Snout short; tympanum very small and 
more or less indistinct. Parotoids of moderate size, subquadrangular. Upper parts 
and sides with small spiny tubercles. ‘First finger longer than the second; toes half- 
webbed; two metatarsal tubercles, of which the inner is large, shovel-shaped, with a 
sharp, horny, black edge, the outer one tipped with black, but much smaller; tarsus 
with a series of small rough tubercles along the inner margin. Olive, irregularly 
spotted with black; abdomen whitish, with a few black spots. 
Distance of vent from snout . . . . .. . . . +. 62 millim. 
» » metatarsal jot . . ... . 54. ,, 
” » end of fourth toe . . . . . . 80 = ,, 
6. Bufo politus. 
Bufo politus, Cope, Proc. Ac. N. Sc. Philad. 1862, p. 158; Bouleng. Batr. Sal. p. 292. 
Hab. Nicaraaua, Greytown (Cope). 
Crown of the head without projecting ridges; profile of snout sloping towards the 
front; no canthus rostralis. Tympanum one-fourth the size of the eye; parotoids 
oval, of moderate size. Skin of the whole body smooth, shining ; a series of flat glands 
on each side of the back; other similar glands on the uppersides of the fore and 
hind legs, those of the tibia remarkably large. ‘Toes fully webbed, soles smooth, 
without tubercles, except that formed by the first cuneiform bone, which is very 
prominent and conical; no tarsal fold. Olive-brown above, glands edged with darker ; 
inner faces of the limbs straw-coloured, with large brown spots. Bright yellow below, 
reticulated with black. (After Cope.) 
7. Bufo marmoreus, (Tab. LXX. fig. A.) 
Bufo marmoreus, Wiegm. Isis, 1833, p. 661; Peters, MB. Ak. Wiss. Berlin, 1863, p. 81. 
? Bufo sternosignatus, Keferstein, Gott. Nachr. 1867, p. 352; Wiegm. Arch. f. Naturg. 1868, 
p- 294; Cope, Journ. Ac. Nat. Sc. Philad. viii. p. 101 (1875); Bull. U.S. Nat. Mus. 
no. 82, p. 11 (1887). 
Bufo argillaceus, Cope, Proc. Ac. N. Sc. Philad. 1868, p. 188; Sumichrast, Bull. Soc. Zool. Fr. 
1880, p. 188. 
Bufo lateralis, Werner, Zool. Anzeig. 1894, p. 156. 
Hab. Mexico, Colima (Xantus), Tehuantepec (Sumichrast, Werner). 
Crown of the head with a slightly raised supraciliary ridge, from which starts a short 
supratympanic ridge; no parietal branch ; interorbital space but slightly concave, not 
