THE BATRACHIA OF NORTH AMP]RICA. 293 



tyuipaiiic. Ridges of cantlius concave, parallel on eud of muzzle; latter 

 triiucate in profile. Strong maxillary ridge from inferior margin of 

 orbit to posterior extremity of the bone. Loreal region concave, nos- 

 trils subvertical; tympanum lialf orbit. Two strong convergent parie- 

 tal ridges from supraorbital, eacli longer than supratympanic of its 

 side. Length of bead from end muzzle to posterior border tympanum 

 equals breadth below at cauthus oris in specimens 1.5 inches long; rel- 

 atively less in larger specimens, till in one 3.75 inches long it is scarcely 

 over two thirds the breadth. Eyelids nearly horizontal; tongue ordi- 

 nary obpyriform; choante larger than ostia pharyngca. Length of 

 head, as above, three to three and a quarter times from end of muzzle to 

 end of urostyle. Parotoid glands measured longitudinally equal supra- 

 orbital ridge, longer obliquely; acuminate posteriorly and continuous 

 with a lateral series of acute tubercles (sometimes on a plica), which ex- 

 tend downwards to groin. Skin above with scattered rounded, on sides 

 with close acuminate, tubercles; below with close small rounded tu- 

 bercles. 



Second .finger short— gless than fourth ; a keeled palmar and elongate 

 pollicary tubercle; palms and soles rough with tubercles. A small 

 acuminate and insignificant external metatarsal tubercle. No inner tar- 

 sal fold. Toes half webbed and margined. The carpus of the extended 

 arm reaches beyond the muzzle; the heel attains from the hinder to 

 the front margin of the orbit. 



Dimensions of an adult (San Antonio) : From end muzzle to end 

 urostyle, 3 inches 9 lines; from same to posterior margin tympanum 

 (oblique), 3 inches 25 liuesj anterior extremity, 1 inch 4.5 lines to carpus 

 + 8 lines to eud longest finger j femur, 1 inch G lines; tibia, 1 inch 3 

 lines; foot from heel, 2 inches; tarsus, 10 lines. 



. Coloration : Above a chestnut-brown, with a dark cross-baud be- 

 tween orbits. A dark lateral band from behind orbit along the side to 

 groin, following below the lateral fold, which is light-bordered above; 

 a more or less distinct light vertebral line; upper lip yellow-bordered. 

 Breast and gular regions more or less slate-shaded. Limbs brown, 

 cross-barred. 



Varieties: Of these I am acquainted with three, which are quite v'is- 

 tinguishable. First. The typical has a strong parietal ridge, is scarcely 

 varied with darker below, and is light brown above; sides very tuber- 

 culous; specimens from Texas, Tamaulipas, and Yera Cruz — Emory 

 andSartorius. Second. Sides with smaller granulations; colors black- 

 ish, spotting and varying the whole inferior regions. Three si^ecimens 

 from Yucatan (Nos. 729, 778, 779)— Schott. Third. Eidges weaker, 

 especially the parietal; cinnamon-brown, below brown varied and 

 spotted ; sides granular. Two specimens from Belize — Dr. Parsons. 



