174 



VERTEBRATE ANIMALS OF THE UNITED STATES 



B. horeas B. & G. (Fig. 87). Body very large, either uniformly 

 dusky brown in color with a light middorsal line or with numerous spots 

 on a yellow or green ground; white underneath, spotted with black; 

 length 124 mm.; parotoid round or oval; no cranial crests: Pacific slope 

 from Alaska to Lower California; eastward to Utah; common. 



Fig. 87. — Upper surface of head ot Bufo boreas {from Cope). 



Subspecies of B. horeas 



B. b. boreas B. & G. Colors dark; web extending to tip of toes: 

 northern California to Alaska. 



B. b. halophilus B. & G. Body small, slender; color light brown 

 above; web deeply notched, 3 phalanges of fourth toe being free: central 

 California to Lower California. 



B. canorus Camp. Coloration dimorphic, the female being irregu- 

 larly blotched and the male specked with black; length 69 mm.; hind 

 leg 82 mm.; parotoids very large and circular; no cranial crests: Yose- 

 mite National Park, California, at elevations above 7,000 feet. 



2. Eleutherodactylus Dumeril & Bibron. Vomerine teeth present; 

 body relatively slim; skin smooth or tubercular but not warty; digits 

 not webbed; terminal phalanges with a transverse limb which supports 

 dermal disk: 2 species. 



E. latrans (Cope). Skin smooth; color brownish gray, withjarge 

 brown spots; grayish white beneath; length 94 mm.; hind leg ii5_mm.; 

 pupil horizontal: San Antonio, Texas. 



E. ricordii (D. & B.). Skin slightly tubercular: Florida. 



3. Syrrhophus Cope. Like Eleutherodactylus, hutwiihoutyomenne 

 teeth: several species. 



S. marnocki Cope. Color purplish brown, spotted; length 38 mm.; 

 hind leg 45 mm.: San Antonio, Texas. 



Family 4. Hylidae. — Tree toads; tree frogs. Small 5a/ie«/ia which 

 live in trees, bushes or in dense foliage on the ground and return to the 



