E.V. Miller 1940 /3 General Account is 6 to 15 ft. high and so dense that one can hardly walk through it, in fact, in most places one can't. I looked at my rat traps after dark and found 4 Neotoma microtusa, 3 ♀, 1 ♂. Nothing in the small traps, but many of them set off apparently by rats. The the topography of the region is that of low rolling hills. The soil varies, much of it being fine gray-brown in color, and sandy. On the hills is more brush and the ground is covered with small pebbles. In the swales the cacti grow very thick and abundantly. The Opuntias is blooming now. A few tree yuccas (sp?) are present. I shot a Red-billed Pigeon in the afternoon (as before mentioned) but it was only winged, and escaped into the cacti. I saw also Cardinal, Mockingbird, Scaled Quail, and Eremidokleres (aeplineatus?) April 5 Picked up my traps in early morning. Nothing in M. Speials. 2 Neotoma microtusa ♀'s in rat traps. 4 Perognathus merriami, ♂'s. in live traps. April 6 Set 99 M. Specials, 50 live mouse traps and 3 rat traps yesterday afternoon and night. Caught 3 Neotoma micropus 1♂, 2 ♀; 3 Perognathus merriami ♂'s; 2 Liomys sp. 1♂, 1♀; and 1 Lemmyscus leucopus, ♀. This is a different location from April 5. Yesterday we drove toward Matamoros into Tamaulipas, 24 mi. ESE Reynosa. This morning is cloudy with a little rain. The barometer registers zero. Country here is