306 J. S. BUDGETT. 



I. Leptodactylus ocellatus, L. 



An extremely common frog, frequently found in the streets 

 of Concepcion at sunset and on both sides of the river Para- 

 guay. 



At Concepcion, black markings on a greyish-green ground. 

 At Waikthlatingmayalwa the ground is usually of a brighter 

 green. 



A triangular black spot at the back of the eyes is very 

 constant. 



The natives, who are Lengua Indians, name this frog Nukk- 

 mikkting, and use it largely for baiting their hooks. The 

 largest measure 50 mm. from snout to vent. 



The call is regularly repeated, beginning on a low note and 

 ending on a high one, and is constantly heard in wet weather. 



There is, however, another call, which is heard immediately 

 after rain ; this is a drumming like that of a snipe. 



A large variety found in the Chaco is called by the Lenguas 

 Yattnukkmikkting; these measure up to 120 mm., and are 

 only found down in the swamps. I think this may be L. 

 bolivianus. 



II. Leptodactylus typhonius, Daud. 



Not nearly so common as L. ocellatus; I procured only 

 two specimens, though I saw a few others. These were all 

 seen at Caraya Vuelta on the river bank. The general colour 

 is lighter than ocellatus, the spots are more numerous and 

 smaller, and there is a bright gold band on either side running 

 from the eye to the hips. 



It appears to be about the same size as ocellatus. 



No Lengua name was obtained for it. 



III. Leptodactylus bufonius, Boul. 



Small brown frog with blackish spots above, beneath pale 



