ORDER Il. TESTUDINATA 965 
from the other blotches on the same side of the back by about 
one and one-half scales, and from those of the opposite side 
by the width of one scale. There are two or three rows 
of smaller alternating brown spots on the sides. The gas- 
trosteges, except anteriorly, are dark slate. The edges of 
the gastrosteges and of the scales of the first row are whitish. 
The tip of the tail is bright salmon or flesh-color. 
Length to anus.............309 319 395 406 445 460 480 
Length of tail to 
basésof rattle.__-__-. 32 29 38 41 30 40 43 
Distribution —This beautiful little rattlesnake is known 
only from southeastern Arizona. It has been taken in the 
Huachuca Mountains, in Cochise County, and at an altitude 
of 7,500 feet, on a ridge near Old Baldy, Madera Canyon, 
Santa Rita Mountains, Santa Cruz County. Another was 
taken near the summit of Old Baldy. It is said that this 
species occurs also in the Catalina Mountains. In the Chiri- 
cahua Mountains it has been collected on Onion Creek near 
Paradise, Cochise County. The National Museum has it 
from the Apache Forest, and from 6,100 feet altitude on 
Ash Creek, Mount Graham. 
Order II. TESTUDINATA 
This order includes all of the turtles. These belong to 
a number of families, only four of which occur within our 
geographical limits. Two of these families include the sea 
turtles, so that our land and fresh water turtles all belong 
to two families, the Kinosternide@ and the Testudinide. The 
latter includes most of our species of turtles. These are 
very few in number. Indeed, throughout most of the area 
under consideration only one kind of turtle (Clemmys mar- 
morata) has been found. 
