422 CALIFORNIA ACADEMY OF SCIENCES  [Proc. 41H SER. 
As we drew nearer indistinct though loud croaking sounds 
could be heard at intervals interspersed with the kitten-like 
cries. Soon we discovered a garter snake (No. 33877) of 
this species coiled up on shore a couple of feet from the edge 
of the water holding in its jaws a Rana pipiens, which it had 
seized by one hind leg, and which was crying lustily. When 
we approached still closer, the snake dropped the frog and 
both made for the water, which the frog succeeded in reaching. 
No. 33876, was colored in life as follows: The head above 
is clear olive. The supralabials are straw yellow, the anterior 
and posterior ones tinged with olive, and all showing posterior 
edgings of black. The oculars are yellowish olive. The dor- 
sal line is bright ochre anteriorly, becoming dull yellow on 
the posterior half of the body. ‘The laterals lines are olive 
yellow on the neck, but posteriorly become grayish yellow 
and then cream or grayish white. Nuchal blotches are black- 
ish, but are not very evident. The area between the dorsal and 
lateral lines is clear olive brown, with two rows of nearly con- 
cealed blackish blotches separated by concealed light greenish 
white areas on the skin between the scales. The lower laterals _ 
and tips of the gastrosteges are olive brown, a little lighter 
than the area between the stripes. The lower surfaces are 
yellowish white on head and neck, grayish or olive white 
elsewhere, the gastrosteges with concealed black markings 
laterally. 
71.—Thamnophis angustirostris (Kennicott) 
Eighteen of these snakes were collected at Oak Creek, 
Coconino County, Sept. 1-4, 1912. Oak Creek is a moun- 
tain stream running through a deep canyon with many oak 
trees. Perhaps a thousand feet above the stream is the pine 
forest of the plateau. These snakes were found in the stream, 
either on rocks or in the water. 
All have 21-19-17 scale rows. The posterior genials are 
either equal to or longer than the anterior. 
No. 35248 has the anal divided. The loreals are 1-1 ex- 
cept in No. 35249, which has two on one side of the head. 
Variation in other scale characters is shown in the following 
table : 
