Vou. III] VAN DENBURGH—REPTILES—SOUTHERN CALIFORNIA 153 
3. Uma notata Baird.—Seventeen specimens were taken 
near Yuma in May and June, 1899. The keeled suborbitals 
vary in number from three to six; the loreal rows from four 
to seven; supraocular rows from eight to ten; supralabials 
from eight to ten; infralabials from eleven to seventeen; and 
femoral pores from twenty-two to thirty. 
4. Callisaurus ventralis (Hallowell).—Mr. Coolidge pre- 
served fifty-two specimens of this lizard. Only one of these 
has three lateral black blotches, the number found in C. dra- 
contoides. In this specimen, as in all others, these blotches are 
very oblique. 
5. Crotaphytus wislizenii Baird & Girard.—Two leopard 
lizards were taken in May and June, 1899. 
6. Uta stansburiana Baird & Girard.—This species is com- 
mon at Yuma, where a number were collected. 
7. Uta symmetrica Baird—Numerous specimens of this 
species were collected in May, 1899. 
8. Sceloporus magister Hallowell—The number of fem- 
oral pores in the fifteen specimens secured ranges from eight to 
fifteen, the average of the thirty series being 12.1. 
9. Phrynosoma m’callii (Hallowell).—One fine horned- 
toad of this species was caught June 9, 1899. It has seventeen 
femoral pores. 
10. Cnemidophorus tigris Baird & Girard—One specimen 
has the frontoparietal plates united for the anterior third of 
their length. None has enlarged postantebrachials, and in 
none is the second labial in contact with the anterior nasal. 
In all these specimens the enlarged preanals are two, preceded 
by one, which in turn is usually preceded by one. Femoral 
pores in 40 specimens vary from 15 to 25; the average of 80 
thighs is 20.4 (average of 40 right legs 20.41, of 40 left legs 
20.42). All the specimens are very dark. The gular regions, 
and the lower surface of the body nearly to the insertion of the 
hind limbs, are dark slate or black, usually with light markings 
along the posterior edges of the ventral plates. 
11. Siagonodon humilis (Baird & Girard).—One typical 
specimen was taken May 22, 1899. 
12. Chionactis episcopus (Kennicott).—This Chionactis 
has a light vinaceous-rufous band extending along the back 
from the occiput to the tip of the tail. This band is four or 
