REPTILES AND AMPHIBIANS FROM LIBERIA — LOVERIDGE 135 



5. Fourth toe with only 1 phalange free of web (though sometimes 



second represented only by a narrow seam in o. grihinguiensis) , 



fifth webbed to tip 6 



Fourth toe with 2 or more phalanges free of web 7 



6. First, second, and third toes with i^ a phalange free of web; 



tibiotarsal articulation of adpressed hind limb reaches end of 



snout or far beyond ; adult 5 2 50-58 mm longirostris 



First, second, and third toes webbed to tips ; tibiotarsal articula- 

 tion of adpressed hind limb reaches well beyond or far beyond 

 end of snout ; inhabits rain forest ; size larger, adult $ $ 58-74 

 mm o. gribinguiensis 



7. Fifth toe webbed to tip ; vocal sac of $ external, its aperture ex- 



tending posteriorly toward lower insertion of forearm. 



Fourth toe with 2 phalanges free of web ; first, second, and 

 third toes with 1 phalange free of web ; tibiotarsal articu- 

 lation of adpressed hind limb reaches nostril or just be- 

 yond end of snout ; adult 9 $ 53-55 mm o. oxyrhynchus 



Fifth toe with 1 or more phalanges free of web 8 



8. Fourth toe with 2i>^ phalanges free of web, first, second, and 



third toes with 1 (or rather more than 1) phalange free, fifth 

 with only 1 free; tibiotarsal articulation of adpressed hind 

 limb reaches nostril or just beyond end of snout ; vocal sac of 

 $ external, its aperture extending posteriorly toward upper 



insertion of forearm m. mascareniensis 



Fourth toe with 3 phalanges free of web, first, third, and fifth 

 with 2, second with l^,^ phalanges free of web ; tibiotarsal ar- 

 ticulation of adpressed hind limb reaches well beyond or far 

 beyond end of snout ; vocal sac of $ external, its aperture ex- 

 tending posteriorly toward lower insertion of forearm bibronii 



RANA OCCIPITALIS Giinther 



1858. Rana occipitalis GtJNXHER, Catalogue of the Batrachia Salientia in the col- 

 lection of the British Museum, p. 130, pi. 11 (Gambia) (restricted). 



5,259 (U.S.N.M. Nos. 109299-301), Bromley 

 3 $ $,2 ? 9 (U.S.N.M. Nos. 109574-8), Bendaja 



Characters as in foregoing synopsis. Length of o 5 , 80-93 mm. ; 

 of 9 9, 82-94 mm. 



RANA CRASSIPES ALLENI (Barbour and Loveridge) 



1927. Pseudoxenopus alleni Baebour and Lox^eridge, Proc. New England ZooL 

 Club, vol. 10, p. 14 (Firestone Plantation No. 3, Du River, Liberia). 



Yng. and $ (U.S.N.M. Nos. 109050, 11313) , Gibi 



Characters as in foregoing synopsis. Length of 5 , 65 mm. Parker 

 (1931, p. 493) has accidentally reversed the character of snout length 

 in relation to that of occipitalis. It seems best to regard alleni as the 

 western race of crassipes as suggested by Parker. 



