lyo VERTEBRATE ANIMALS OF THE UNITED STATES 



6*. hurteri Strecker. Body pale greenish in color, with a yellowish 

 line on each side running back from the orbit; head short; snout very 

 blunt; length 67 mm.: Louisiana, Texas and westwards. 



Family 3. Bufonidae.— Toads. Body heavy and awkward; legs 

 short; skin covered with prominent warts and protuberances; parotoid 

 glands prominent; toes 4-5; pectoral girdle arciferous (coracoids and 

 precoracoids overlapping midventrally) ; presacral vertebrae 8: about 

 100 species, in all parts of the world; 3 genera in the United States. 



Key to the Genera of the Bufonidae 



ai Hind toes webbed i. Biifo. 



a2 Hind toes not webbed. 



bi Vomerine teeth present 2. Eleutherodactylus. 



bo Vomerine teeth absent 3. Syrrhophus. 



I. Bufo Laurenti. — Pupil horizontal; a pair of prominent longi- 

 tudinal ridges called the cranial crests lie between the eyes, which pass 

 back to or along the parotoid glands (Fig. 81); prominent plantar 

 tubercles often present on the digits; eggs laid in a long chord of jelly 

 which is usually deposited on the bottom of some shallow pool : nearly 

 100 species; 14 in the United States. 



Key to the United States Species of Bufo 



ai In the States east of the Mississippi. 

 bi In the northeastern States. 



Ci Profile of snout sloping; back with a single wart to a color 



spot; belly spotted B. americaniis. 



C2 Profile of snout abrupt; back with more than one wart to 



a color spot; belly usually unspotted B. fowleri. 



bo In the southern States. 



Ci Cranial crests very prominent (Fig. 85) B. terrestris. 



Co Cranial crests inconspicuous B. quercicus. 



3.1 In the States west of the Mississippi. 

 bi In the central western States. 

 Ci Belly spotted. 



di Cranial crests divergent (Fig. 81) B. americamis. 



do Cranial crests parallel B. hemiophrys. 



Co Belly unspotted B. woodhousi. 



hi In the southwestern States. 

 Ci Cranial crests absent. 



di Parotoid glands small, and oval or round. 



Ci Plantar tubercles small B. punctatus. 



eo Plantar tubercles large, with cutting edges B. compactilis. 



do Parotoid glands large and long B. debilis. 



Co Cranial crests present. 



