1925] Storer: A Synopsis of the Amphibia of California 
195 
Remarks on structure and coloration . — The following secondary 
sexual characters have been noted in the preserved specimens studied : 
1. Males have the vocal sac at the base of the throat somewhat as 
in Bufo cognatus. 
2. Males average darker in color than females although the ex- 
tremes of the two sexes overlap. 
3. The parotoid glands of males are, on the average, slightly higher 
than those of females. 
4. Females average decidedly larger in all dimensions than males, 
as indicated in the accompanying table. 
Dickerson (1906, p. Ill) states that specimens from Lower Cali- 
fornia may be as large as 3 inches in total length and also may show 
a pattern of spots and stripes. 
History . — This toad was originally described by Baird and Girard 
in 1852 from specimens collected by the United States and Mexican 
Boundary Survey, probably in Texas. Yarrow in 1882 (p. 441) 
described specimens from Lower California as Bufo beldingi. 
Range.— Bufo punctatus occupies the deserts of southwestern 
United States and northern Mexico. It has been found east to central 
Texas as at Dallas, Waco (Strecker, 1915, p. 51), San Antonio (Cope, 
1880, p. 29), San Diego (Cope, 1888, p. 395), and Fort Ringgold 
(Yarrow, 1883, p. 162). In old Mexico it has been found south to 
Guanajuato (Cope, loc. cit.), and in Lower California at numerous 
localities from the San Pedro Martir Mountains (Schmidt, 1922, 
p. 633) south to La Paz near the Cape (Yarrow, 1882, p. 441; 1883, 
pp. 162, 163). In New Mexico it has been recorded from Dry Canon, 
near Alamogordo, Otero County, altitude 4600 to 5000 feet (Stone 
and Rehn, 1903, p. 34). In Colorado, Ellis and Henderson (1915, 
pp. 255-256) record Bufo punctatus from Basin Creek near the north- 
ern line of San Miguel County about 6 or 8 miles from Naturita, at 
an altitude of about 6500 feet. It is said to occur in Utah (Yan Den- 
burgh and Slevin, 1915, p. 100). In Arizona it has been listed from 
the Grand Canon, between the Kaibab and Coconino plateaus 
(Stejneger, 1890, p. 117), and at several localities in the southern 
part of the state; Cave Creek, Maricopa County, in the foothills of 
the Catalina Mountains near Tucson, Pima County, and in Ramsey 
Canon in the Huachucha Mountains (Van Denburgh and Slevin, 1913, 
p. 395). 
