FROGS OF SOUTHEASTERN BRAZIL — COCHRAN 301 



Genus Leptodactylus Fitzinger 



1826. Leptodactylus Fitzinger, p. 38. (Genotype, Leptodactylus typhonia 

 Fitzinger = i2ona typhonia (part) Daudin.) 



Generic diagnosis. — Pupil horizontal. Tongue oval or rounded, 

 entire or slightly nicked, and free behind. Vomerine teeth behind the 

 choanae. Tympanum usually distinct. Fingers and toes free, not, or 

 only slightly, dilated at the tips. Outer metatarsals united. Omoster- 

 num cartilaginous; sternum with a bony style. Terminal phalanges 

 simple. 



For a statistical analysis of measurements of the species of Lepto- 

 dactylus here discussed, see pages 373 and 384 



Key to the species of Leptodactylus of southeastern Brazil 



a.i Toes without distinct lateral ridges or fringes. 

 6.* Heel reaching posterior corner of eye. 

 c' Foot very short (averaging 40 percent of total length); snout truncate; 



(size 53 mm.) troglodytes (p. 332) 



C.2 Foot longer (averaging 50 percent of total length) ; snout broadly rounded; 



(size 30 mm.) marmoratus (p. 306) 



6.2 Heel reaching between eye and nostril; snout obtusely pointed; (size 52.5 



mm.) sibilatrix (p. 329) 



C.2 Toes with lateral ridges sometimes widened to dermal fringes. 



6.' Head longer than broad; snout pointed; heel reaching beyond snout; (size 



46.5 mm.) gracilis (p. 304) 



6.2 Head as long as broad, or broader than long; snout rounded, 

 c* Heel reaching between anterior corner of eye and nostril, 

 d.* Interorbital diameter Ji that of upper eyelid; (size 132 mm.). 



ocellatus (p. 315) 

 d.2 Interorbital diameter not less than width of upper eyelid. 



e.' Interorbital diameter IH times that of upper eyelid; (size 52 mm.) 



mystaceus (p. 310) 

 e.2 Interorbital diameter equal to width of upper eyelid; (size 181 mm.) 



pentadactylus labyrinthicus (p. 323) 

 C.2 Heel not reaching beyond anterior corner of eye. 



d.i Heavy, enlarged glands on sides of body and femur; (size 137 mm.). 



pentadactylus flavopictus (p. 320) 

 rf.2 No especially large glands on sides of body or femur. 



e.^ Interorbital diameter twice the width of upper eyelid; (size 19 mm.). 



gaigeae (p. 302) 



e.2 Interorbital diameter not more than IJ^ times width of upper eyehd. 



/.' First and second fingers subequal; interorbital diameter a little 



greater than upper eyelid; (size 46.5 mm.) podicipinus (p. 326) 



/.2 First finger longer than second; interorbital diameter iVi times the 



upper eyelid; (size 60 mm.) niystacinus (p. 313) 



