6 COPEIA 



frogs were most numerous, some still mating. No 

 ova, but plenty of tadpoles were found in the water. 



The tadpoles were about one inch long ; uniform- 

 ly dark gray above and iredescent light gray below; 

 tail broad, heavily marbled, dark gray; eyes golden. 

 The adult frogs averaged about two inches in body 

 length, and were uniformly light gray above, with nu- 

 merous minute spots and granulations, giving the skin 

 the appearance of roughness. 



The call of this frog is lower in pitch, but is 

 otherwise very much like the bleating notes of Hyla 

 versicolor. It was heard, occasionally, during the 

 day, increased in volume towards dusk, and continued 

 through the night. Only two of eight specimens, cap- 

 tured and sent to the New York Zoological Park, 

 arrived alive. 



Bufo punctatus, without doubt, is the most abun- 

 dant of Batrachians in the Canyon, yet so secretive 

 and strictly nocturnal is this toad that none are likely 

 to be encountered, except after dark. During the 

 one night spent in the Canyon its call, mingling with 

 that of Hyla arenicolor, was the dominant sound of 

 animal life. Search for the toads with an acetylene 

 lamp revealed such numbers that no attempt was 

 made to count them. There were hundreds — many 

 on the trail and many more in the shallow pools in 

 the Indian Garden. None were seen mating, but 

 their small, black tadpoles, not exceeding half an 

 inch in length, were swarming along the margin of 

 the stream. Breeding evidently had taken place dur- 

 ing May. 



In size as well as in general appearance there 

 is so little difference between this toad and Hyla 

 arenicolor that one might easily be mistaken for the 

 other. The call, though loud, is not harsh and con- 

 sists of a series of deep, whistling notes, repeated at 

 short intervals. 



At least two more species of frogs are to be found 

 along the stream in the Indian Garden. Of one, a 



