Tadarida laticaudata ferruginea Goodwin
Geoffroy's Free-tailed Bat
1954. Tadarida laticaudata ferruginea Goodwin, Amer. Mus. Novit., 1670:2, June 28, type from 8 mi. N Antiguo Morelos, Tamaulipas.
Distribution in Tamaulipas.—Known only from southeastern part of state.
Specimens from three miles south and 16 miles west of Piedra were found in a crevice inside a cave. Two days previously Desmodus rotundus and Natalus stramineus were obtained from the same cave. All other specimens from the Sierra de Tamaulipas were caught in mist nets. Nycticeus humeralis, Myotis velifer, Eptesicus fuscus, Lasiurus borealis and L. intermedius were taken in nets that also captured T. laticaudata.
All specimens taken (June 19-23) in the Sierra de Tamaulipas were females, except one. Of 33 females taken, 27 carried a single embryo each, the embryos averaging 27.0 (25-28) mm. in crown-rump length; the other five were lactating. Weight of the pregnant females averaged 16.0 (13-18) grams and that of the five lactating individuals averaged 13.0 (12-14) grams. A male weighed 22 grams.
For the taxonomic status of this species in North America see Jones and Alvarez (1962).
Records of occurrence.—Specimens examined, 65: Sierra de Tamaulipas, 2 mi. S, 10 mi. W Piedra, 1200 ft., 27; Sierra de Tamaulipas, 3 mi. S, 16 mi. W Piedra, 1400 ft., 7; 5 mi. S El Mante, 8 (AMNH); 11 mi. S El Mante, 13 (AMNH); 10 km. NNE Antiguo Morelos, 1; 8 mi. N Antiguo Morelos, 7 (5 AMNH, 2 KU); 20 mi. SW El Mante, 2 (AMNH).
Molossus ater nigricans Miller
Red Mastiff Bat
1902. Molossus nigricans Miller, Proc. Acad. Nat. Sci. Philadelphia, 54:395, September 12, type from Acaponeta, Nayarit.