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On January 23, 1946, two pocketed free-tailed bats (Tadarida femorosacca, Catalogue nos. 17852 and 17853) were obtained in a large cave 10 kilometers north-northeast of the village of Antiguo Morelos, in the state of Tamaulipas, Mexico. This extends the known range of this species to the Atlantic Slope and more than 300 miles to the northeast of Zacoalco, Jalisco, the only locality in central Mexico from which the species was previously known... more...

The hooded skunk, Mephitis macroura Lichtenstein, can be distinguished from the only other species in the genus, Mephitis mephitis Schreber, by the larger tympanic bullae, in the white-backed color phase by having some black hairs mixed with the white hairs of the back, and in the black-backed phase by having the two white stripes widely separated and on the sides of the animal instead of narrowly separated and on the back of the animal. The... more...

Four nominal species of the genus Pipistrellus are currently recognized in North America. They are (F. Cuvier) of eastern North America, (H. Allen) of western North America, (Ward) from Veracruz, Mexico, and Miller from Tabasco, Mexico. In the past three years, specimens have been obtained in Veracruz (by Dalquest) of each of the southern species. One of these, P. cinnamomeus, previously was known from a single specimen; the other, P.... more...

While one of us (Dalquest) was in a dugout canoe that was being paddled up a small unnamed tributary of the Rio Coatzacoalcos, through dense jungle, he grasped a decayed and termite damaged tree-trunk projecting approximately three feet above the surface of the water to steady the canoe. At that instant two bats were detected in one of the many small holes in the trunk, which was eight to nine inches in diameter. It was a simple matter to enlarge... more...

Cynarctus fortidens new species Holotype.—Right maxilla bearing P3, P4, and M1, No. 11353 KU; bluff on west side of Turkey Creek, approximately 75 feet above stream, Raymond Farr Ranch, Center NE, NE, S. 48 Blk. C-3, E. L. and R. R. Ry. Co., Donley County, Texas [approximately 6.5 miles north and 1 mile east of Clarendon], Clarendon fauna, Early Pliocene age. Obtained by W. W. Dalquest, on June 25, 1960. Referred... more...