E. U. Miller 1940. General Account. Matamoros, Tamaulipas. ? set out 50 M. specials and 50 live traps, the latter after dark. Hear Paroques calling. Weather cool?, not many mosquitoes, etc. Driving along the road today Benson shot 2 Citellus Mexicanus and we saw a White-tailed Deer. At El Tigre ? found a small Toad hiding in a land crab's hole. We looked for mole signs but found none. We saw some gopher signs a few miles S of Matamoros. April 9 In my 50 M.specials ? took 2 ? Peromyscus leucopus, 1 ? Linmys sp., 2 ? Perognathus merriami, and 2 ?, 1? Ochommys leucogaster. ?in my 50 live traps ? took 2 ? P. merriami and 1 ? Rheithrodontys sp. This camp was made because we could travel no farther yesterday. ?t turned out to be within a few hundred yards of our camp of the night of April 7: 5.7 mi. S Matamoros, Tamaulipas. The habitat was the same as the country here is flat and much alike for miles. Today we travelled on through Matamoros and W toward Reynosa. Our steering gear broke about 40 miles from Reynosa so we proceeded globly to within a few miles of town and camped. Set out 50 live traps. April 10 Got 2 ? Perognathus merriami in my live traps. Location about 1 mi. SE Reynosa. From Reynosa we drove south to Charco Escondido. In the afternoon, ? set out 50 M. specials in a habitat of medium thick cage mesquite, other brush and prickly pear cactus.