۴ date el 
SUMMARY OF THE ZOOLOGICAL COLLECTIONS. 13 
the several species of cactacew (Opuntia) which grow here. The latter is probably 
a protection against the depredations of wolves. Numerous lodges of this kind 
were found throughout the forest, into one of which we dug until we reached the 
hole at the root of the tree; when, applying a match, we soon compelled the animal 
to leave it, which it did by finding its way out several feet above, and fell to the 
ground apparently dead. The food of this animal seems to consist mainly of the 
fruit of the cactus. 
No. (a) Wu Th وت‎ aii Sanna Camp 96. 
This animal closely resembled the common field-mouse, (Hesperomys,) though 
somewhat larger; the ears, also, being somewhat larger in proportion to the size of 
the animal. Its abdomen was white, the same color extending slightly on each 
side; the feet perfectly white; the tail very long and hairy. It lived in the hollows 
of the cedar trees, like the subject of the preceding description, (107,) and also, built 
up around the root of the tree a pile of small dry twigs. Sometimes as many as 
three were found living together in the same tree. 
No. 108. Lepus artemesize Camp 99, Picacho mountains, New Mexico. 
109. Hystrix Canadensis Little Colorado river, New Mexico. 
110. Neotoma Camp 106. 
111. Dipodomys ordii Camp 106. 
In removing the cloth which was used in our tent as a carpet, this animal was found 
under it. No hole was observed in the ground within the tent, from which it could 
have come, nor did it attempt to make its escape into one; but when pursued, leaped 
wildly and rapidly about, making at each bound an astonishing distance. Its hind 
legs, being very long and muscular, are well adapted for this mode of locomotion. 
No. 112. —— — ———. (Lizard)................. Camp 110, New Mexico. 
(a) —— — ——. (Lizard)................. Camp 110, New Mexico. 
113, 一 一 一 (Lig) ........ 2... Camp 111, New Mexico. 
(a) —— ——. (Lizard)................. Camp 111, New Mexico. 
114. ——. (Lizard) Camp 111, New Mexico. 
(a) Rana — Camp 111, New Mexico. 
115. ——. (Lizard) White Cliff creek, New Mexico. 
(a) 一 一 一 UET rre دی خلا‎ White Cliff creek, New Mexico. 
(b Neotoma : White Cliff creek, New Mexico. 
This was much the largest species of this genus that we saw. We found around 
a pile of rotten drift-wood near the creek, tracks and other evidences of the presence 
of some mammalia, and applying a match to the bushes, we patiently awaited the 
result; and when nearly the entire pile was consumed, the specimen came out, 
having four young ones adhering to it. The little ones were very young, and after 
the mother was killed, they were placed in an open spot on the sand, where they 
crawled awkwardly about for a while, uttering all the time a plaintive, whining cry, 
not unlike that of a very young kitten. They were caught early in February. 
No. 116. Rana Camp 113, Williams’ river, New Mexico. 
117, 118, 134, 136, سا ا‎ Williams' river, New Mexico. 
141, 143, 144, 147. 
The several lots of fishes enumerated above were taken at various times, at different 
localities, during our march down Bill Williams' fork. This stream frequently 
entirely disappears in the sand; but where it flows, is generally a bold and rapid 
rivulet of clear, pure water. The fishes which we took from it comprised at least 
five distinct species, and probably six or seven, among which were recognized the 
Gila robusta and Gila elegans ; and of these two, the former species was the most 
abundant. The others were probably entirely new and undescribed. 
