VENTRAL FIN 



SPIRACLE 



Fig. 1. Left lateral aspect of a tadpole. TL = total length; BL - body length; 

 TaL = tail length; MH = musculature height; TH = tail height. Redrafted from 

 Altig (1970). 



1— A-2 GAP 



, ANTERIOR 

 LABIUM 



POSTERIOR 

 LABIUM 



Fig. 2. Tadpole mouth parts, schematic. UJ = upper jaw (mandible); LJ = lower 

 jaw (mandible); A-1,2 = first and second anterior tooth rows; P-1,2,3 = first, 

 second and third posterior tooth rows; SP = submarginal papilla; MP = mar- 

 ginal papilla; OD = oral disc (shown emarginate on viewer's left, marginate on 

 right). Redrafted from Altig (1970). 



12. Tail musculature unicolored or bicolored; fins clear or with stellate melano- 

 phores; small black dots often present on body; A-2 subequal to A-l; one row of 

 marginal papillae (see Fig. 2); snout round when viewed 



dorsally Pseudacris triseriata (part) 



Tail musculature mottled; fins clear or with large blotches; no dots on body; A-2 

 longer than A-l; two rows of marginal papillae; snout square when viewed 

 dorsally Hyla crucifer (part) 



