410 



Island, an adult female was taken the night of July 22 at the 

 Drayton House. Leptodactylus insularum from Saboga and San 

 Miguel is a synonym. 



Leptodactylus quadrivittatus Cope. 



It has been taken once in the region at the Rio Tocumen. 



Leptodactylus pentadactylus (Laurenti). 



Rather rare on the Island. I have three records. One was in 

 a burrow at the junction of the Barbour and the Donato trails. 

 K. P. Schmidt and his colleagues of the Crane expedition spent 

 nearly a day in vain, trying to excavate it from what proved to 

 be quite an extensive underground habitation. 



Lithodytes gaigei Dunn. 



This species has been taken once on the Island by the Gaiges. 

 The Museum of Comparative Zoology has it from Fort Randolph. 



Eleutherodactylus gollmeri (Peters). 



This species has been taken on Cerro Bruja, and the specimen 

 served as the type of E. goldmani Noble. It ranges from Hon- 

 duras to Venezuela, and is quite common in Costa Rica. 



Eleutherodactylus polyptychus (Cope). 



This common Costa Rican species has been met with only at 

 Gatun and at Rio Chenillo. 



Eleutherodactylus bufonlformis (Boulenger). 



This large and hideous frog is not uncommon on the Island 

 around rock outcrops in the beds of streams. 



Eleutherodactylus biporcatus (Peters). 



This widespread species is mostly met with in high and dry 

 localities on the Island. Here as elsewhere adults are very 

 scarce, in fact I have seen only tiny specimens on the Island. 

 The adults of this, the largest Eleutherodactylus, are decidedly a 

 problem. Possibly, as their developed bony heads might indicate, 

 they live in burrows. 



Eleutherodactylus fitzingeri (Schmidt). 

 The commonest of its genus on the Island and wherever else 



