_Idionycteris mexicanus_ Anthony (_Plecotus phyllotis_) _Cratogeomys castanops planifrons_ Nelson and Goldman _Onychomys torridus subrufus_ Hollister _Neotoma albigula subsolana_ Alvarez _Odocoileus virginianus miquihuanensis_ Goldman and Kellogg Rancho del Cielo, 5 mi. NW Gómez Farías _Cryptotis mexicana madrea_ Goodwin _Reithrodontomys megalotis hooperi_ Goodwin Rancho Santa Ana, about 8 mi. SW Padilla _Oryzomys melanotis carrorum_ Lawrence Sierra de Tamaulipas, 10 mi. W, 2 mi. S Piedra _Myotis keenii auriculus_ Baker and Stains Sierra San Carlos, 12 mi. NW San Carlos _Peromyscus pectoralis collinus_ Hooper CONSERVATION A relatively large number of the species of Mexican big game occurs in Tamaulipas because its geographic position permits it to have species from the tropics and those from the northern plains and mountains. Eight of the 11 Mexican species that are considered as Big Game are recorded from the state. Until this century Tamaulipas was not densely populated by man either in the pre-colonial period or thereafter. Therefore many species of game are still relatively abundant. Of the eight species that originally lived in Tamaulipas, the mule deer, brocket, and black bear never have been abundant there and now are in danger of extirpation. The pronghorn was also rare in the state and now has been extirpated as it has been in many other parts of México. The white-tailed deer, javalin, jaguar, and puma are still abundant in suitable habitats. The white-tailed deer is found almost everywhere in the state; in some areas it damages cornfields, and for this reason is killed by natives who eat the meat and sell the skins. The price of skins is low; in 1959 at Ciudad Mante tanners paid natives less than one dollar (10.00 Mexican pesos) per hide. Some idea of the abundance of deer in Tamaulipas is provided by our having found in one tanner's shop, in 1959 at Ciudad Mante, about 500 deer skins. Besides these, we found about 65 skins of other species--jaguar, bear, ocelot, puma, margay, and raccoon. Additionally there was a large number of coati skins. Considering that México has no professional trappers and that commerce in skins of wild animals is illegal, it is felt that the number of skins found in the tanner's shop indicated a relative large population of game mammals. The number of species of small game also is large. Some species are killed by natives for food, but most are killed in order to protect the cultivated crops, which are injured mainly by rabbits and squirrels. Baker (1958) pointed out that the future of the game species in the northern part of México was not encouraging. He gave valid reasons for his view. In Tamaulipas, however, in some respects the outlook is more encouraging because there are many areas in which with a minimum of effort the authorities can save a good number of species.