MODEL SHEET 



Date: May i, 1914 

 Where found: Renwick 



Crests ~tr4 \aS\uc ent 



iridescent 

 smistral Tine 



WKVTe 



Size: $y inches 

 Common name: Leopard Pros. 

 Scientific name: Rana pipiens Schreber. 



Family, and characters of: Ranidce: thorax incapable of expansion, upper jaw with teeth, moist smooth 

 skin, digits without discs. 



Confusing species: Pickerel Frog. 



Recognition marks: Entire under-parts white; back green or greenish brown, irregularly spotted. 



Distinctive habits: 



Distribution : 



General: Eastern North America. 



Local (habitat) : Marshes, ponds, water-courses and moist meadows. 



Seasonal (migration, hibernation) : Mar. 26-Nov. i; hibernates beneath stones or in mud at the bottom 

 of ponds and streams; in summer leaves water for moist situations. 



Food: Adults, carnivorous, feeding chiefly on living prey; tadpoles, largely vegetarian. 



Correlated structure: Adults with extrusible, viscid tongue; teeth; large mouth. Tadpoles with long 

 intestines; rasping mouth-parts with cutaneous teeth. 



Breeding: 



Sexual modifications: Males smaller, darker, with thumbs much enlarged. 



Courtship: Pectoral embrace; external fertilization. 



Eggs: Egg-mass, plinth-like, submerged (3500-4500 eggs); 

 hatching period, 12-24 days; egg-vegetative pole, distinctly white; 

 inner envelope, conspicuous. 



Inner envelope clistVnet 



Growth: 



Larvae: Tadpole period, 60-80 days, transforming from June 30 -Aug. 6. 



Young: At transformation, 18-31 mm. in length; otherwise similar to adult. 



Other Characteristics: The most abundant frog in Eastern North America; the young occasionally 

 so numerous as to form the so-called ''plagues of frogs." 



