Strecker — Notes on the Robber Frog. 79 



adults. The complete metamorphosis must not take over 

 six weeks, if we are to judge by the length of time re- 

 quired for other frogs to transform after the first ap- 

 pearance of the hind limbs. Two specimens collected in 

 March were only about an inch and a half in length. This 

 indicates that it requires from 2V 2 to 3 years for this 

 species to become full grown. 



Genekal Notes. 



Up to the 12th of March, Lithodytes was the only active 

 amphibian noted. Even Acris was sluggish and the few 

 examples observed were stirred out from piles of dead 

 leaves and rock fragments in the bed of the gully. The 

 only toads discovered were two semi-torpid examples of 

 Bufo americanus which were found in burrows under a 

 rotten log. 



In 1899 I captured a single half-grown Lithodytes in a 

 gutter on one of the principal streets of Waco, just after 

 a heavy shower. On April 13, 1910, an adult was cap- 

 tured on an elm flat, nearly a mile from any bluffs. Two 

 specimens of Bufo punctatus B. & G., a toad which also 

 inhabits rocky gulches, were found under similar condi- 

 tions in 1908. I have no theory to account for the pres- 

 ence of these animals so far from their natural haunts. 



Our Bobber Frogs may never breed in the heart of 

 winter, yet their breeding dates are far in advance of 

 those of other Anura inhabiting the vicinity of Waco. 



The following is a list of our tailless amphibians, with 

 breeding and other data: — 



ANURA OF WACO. 



SPECIES. BREEDING DATES. BREEDING LOCALITIES. REMARKS. 



Hyla versicolor Le Conte 



(Var.) April 3, 1899. Permanent ponds. Species 



April 3, 1910. Permanent ponds. rare. 



April 21, 1910. Small pool in gravel Large tad- 

 pit, poles. 



Hyla cinerea Daudin April 15, 1904. Permanent lagoon 15 



miles south of city. 



