rostralis giving the nostril a "boxed" appearance. The eyelids also are 

 so tubercular as to appear pebbly. It is a fine little toad of very neat, 

 compact appearance. We picked up one and turned it over. It lay 

 in the shallow water with legs drawn up as if to "possum. " We never 

 saw any Bufo feign this lifeless attitude more than this individual. 

 It frequently gives a pleasant bird-like chirp in captivity. 



Structure: No cranial crests, or crests obscure; parotoids small 

 and round; interorbital area broad; ridge from nostril to eye sharp 

 and often pebbly, giving the nostril a "boxed" appearance; finger 

 excrescences of males not prominent; throat of male somewhat 

 discolored. 



Voice: The vocal sac of the male is a round subgular pouch. The 

 call is bird-like. It is a high pitched, yet very pleasing trill, lasting 

 while one counts 15-25. 



Breeding: They breed from April to July, May being the most 

 common month. The eggs are single with very sticky jelly and some- 

 times the eggs are stuck together loosely as a small film on the bottom. 

 The envelope is single 1/8 inch (3.2-3.6 mm.), the black and white 

 vitellus 1/25-1/20 inch (1-1.3 mm.). The eggs hatch in 3 days or 

 less. The small tadpole, 1 inch (24-25 mm.), has a very black body, 

 and a whitish ta.il with many evenly spaced black dots. The tooth 

 ridges are 2/3. After a tadpole period of 40 to 60 days, they transform 

 from June to August, at 2/5 inch (9-1 1 mm.). 



Notes: July 19, 191 7. From 5-7 p. m. at Texas Pass, Arizona. 

 We heard plenty of toads but could not find them. At last, Munz and 

 I dug a croaking male from beneath a rock. They croak in the crevices 

 and underneath rocks. In the pools are plenty of tadpoles large and 

 small. ... In the evening we picked up a female B. punctatus. In the 

 canyon were no end of males in the water and along the banks, males 

 seizing each other. As yet there are few females. 



Aug. 2, 1 917. We started down Bright Angel Trail at Grand 

 Canyon. At Indian Gardens, in a flat shallow area, water 6 inches 

 deep, shaded on the east half at midday, with plenty of algae, on the 

 muddy bottom, we found two egg complements of B. punctatus. They 

 were near the west edge in shallow water and not under overhanging 

 willows, and not in the water cress. The eggs were more or less 

 agglutinated on the bottom about one egg deep, in a few places more. 

 Later, we found no end of complements in all stages and took three or 

 four transformed stages of Bufo punctatus here. 



May 9, 1925. Helotes, Tex. At Marnock's second crossing, we 

 arrived about 10 p. m. No end of males were hopping around on the 

 concrete flat crossing. They were restless. We tried for an hour be- 

 fore we got a photograph. They were fond of getting on a stone for 

 croaking. In most cases the pairs were on the banks. 



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