=_Taxidea taxus_= (Schreber): Badger.--Two burrows were found in the stabilized dunes near Camp 1, tracks were noted on the alkaline flats, and a weathered skull (89047) was found on the flats west of Camp 1 on July 7. The skull appears to be of an immature animal, for the sutures are not well closed and the teeth show little wear. Our records require an extension of known range of this species southeasterly by approximately 50 miles. The only previous record in coastal Tamaulipas is based on two skulls from Matamoros (Schantz, 1949:301). The skull from the barrier island cannot be determined to subspecies but on geographic grounds is referable to _T. t. littoralis_, with type locality at Corpus Christi, Texas. =_Canis_= sp.--Numerous tracks made either by Coyotes (_C. latrans_ Say) or by domestic dogs were seen in dunes and on the beach at both camps. A weathered, posterior part of a canid skull was found in dunes at Camp 2 on July 10, and a partial left mandible was taken on the beach at Camp 1 on July 6. Unfortunately, specific identification of the skull fragments is not possible, but the few reasonably good characters that we can use suggest that our material is of domestic dogs rather than of Coyotes. Hall (1951:37) found tracks and other signs of Coyotes at Eighth Pass but did not take specimens. Most of the canid scats examined by us contained remains of crabs and fishes. =_Odocoileus virginianus_= (Boddaert): White-tailed Deer.--A weathered Recent fragment of a mandible (89048) and part of a femur (89049) of this species were found near Camp 1 on July 7, and a metapodal was picked up in the dunes at Camp 2 on July 9. This species has not been reported previously on the barrier island of Tamaulipas and it probably no longer occurs there, for we saw no tracks or other signs of it. Hall (1951) did not find it at Eighth Pass. Our specimens probably pertain to _O. v. texanus_ but are possibly of _O. v. veraecrucis_, which has been reported from Soto la Marina (Goldman and Kellogg, 1940:89). The only species of mammal known from the barrier island of Tamaulipas that we did not find is the Hispid Cotton Rat (_Sigmodon hispidus_). Two specimens of this species trapped near Eighth Pass in March, 1950, formed the basis for the description of _S. h. solus_ (Hall, 1951:42), a subspecies known only from the type locality. Discussion