Robber Frogs. Leptodactylidae: Leptodacty 

 lus. Eleutherodactylus. Syrrhophus 



Fig. 5. I. Ventral disk. 2. Dorsolateral fold. 3. Lateral folds. 4. Trans- 

 verse (T shaped) disks. 5. Subarticular tubercles sharp and saw 

 toothed. 6. Brachium (upper arm). 7. Antebrachium (forearm). 

 8. Femur. 9. Tibia. 10. Heel. 11. Tarsus. 12. Foot. 



a. Pupil horizontal; tympanum distinct. 



b. Fingers and toes free without distinct terminal disks; 

 size small 1 2/5-2 inches (35-49 mm.); white or cream 

 stripe on upper jaw; vittal stripe from nostril to tym- 

 panum; dorsal color gray with irregular dark spots; 

 dorsolateral fold and a lateral fold below it. 



White-lipped frog. Leptodactylus albilabris. Plate LIV. 



bb. Tips of phalanges T shaped; toes and fingers free; 

 terminal disks small; no white upper jaw stripe; no 

 dorsolateral or lateral fold. 

 c. Size large 1 7/8-3 3/5 inches (48-90 mm.); a 

 ventral disk; voice a resounding bark; head broad 

 (2-2.57 m L.); head wider than head to tym- 

 panum; eye small (7.2-9.25 in L.); eye much less 

 than first finger; fingers larger; light stripe down 

 middle of back; intertympanic fold (in preserved 

 material). 

 d. Fourth toe longer; fairly closely aggregated 

 black blotches; sides and hinder half of ad- 

 domen faintly areolate; skin in adults on 

 dorsum stiff, coarse, areolate. Belly without 

 vermiculations or spots; back covered with 

 large black spots. 

 Texas cliff frog. Eleutherodactylus latrans. Plate LI I. 



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