Tlacolula_, 5500 ft., 53[19]; _3 mi. W Mitla_, 11; Jalapa, El Campanario, 1[23]; _2 mi. SE Matalan_, 5950 ft., 14; _Lachiguiri_, 2[23]; _Tres Cruces_, 10[23]; _Agua Blanca_, 11[23]; _San Jose_, 1[23]; Reforma, 30[19], 7[21], 10[23], 6[24] _Totolapa_, 1[18]; _Nejapa_, _85 km. WNW Tehuantepec_, 500 m., 12[19], 6[24]; _Chicapa_, 2[18]; _Gueladu_ [= _Jalapa_], 6[23]; _Juchitan_, _Laguna Superior_; Manteca, 8[23], 1[23]; San Bartolo, 3000 ft., 1[18]; _Ejutla_, 1400 m., 21[19]; _El Bambita_, _Tequisitlan_ 4[23]; _Mixtequilla_, 2[23]; _Guiencola_, 5[23]; _Tehuantepec_, 200 ft., 26[18], 11[19]; _Sola de la Vega_, 26[19], 3[24]; Huilotepec, 13[18], 3[23]; _Santa Lucia_, 24[23]; _Cerro de Paste_, _Tenango_, 7[23]; _Sta. C. Quieri_, 3[23]; _Santa Marie Ecatepec_, _Zarzamora_, 13[23]; _Rincon Bamba_, 11[23]; _3 mi. W Miahuatlan_, 5300 ft., 1; _Miahuatlan_, 12[19], 1[23], 6[24]; _San Juan Acaltepec_, 5[23]; _Zapotitlan_, 1[23]; _Llano Grande_, 3[18]; Pinotepa, 700 ft., 2[18]; Juquila, 8[18]; _Arroyo_, _San Juan_, _north of Cerro Otate_, 1[23]; Cerro Otate, 3[23]; 3 mi. S Candelaria, 1. _Marginal records._--MORELOS: 5 mi, W Tepoztlan, 6000 ft. PUEBLA: 2 mi. S Atlixco, 5800 ft.; Acatlan, 4100 ft. OAXACA: 2 mi. NW Tamazulapan, 6550 ft; Tepantepec; Oaxaca [City], 5000 ft; Yalalag, 3000 ft; Jalapa, El Campanario; Reforma; Huilotepec; 3 mi. S Candelaria; Cerro Otate; Pinotepa, 700 ft. GUERRERO: Acapulco; Zihuatanejo Bay; El Limon; 9 mi. SE Taxco, 3800 ft. [18] U. S. Nat. Museum (Biol. Surv. Coll.). [19] Univ. Michigan, Museum of Zoology. [20] Texas A & M, Cooperative Wildlife Research Collection. [21] Chicago Natural History Museum. [22] California Academy of Sciences. [23] American Museum of Natural History. [24] University of Florida Collections. =Baiomys musculus pullus= Packard _Baiomys musculus pullus_ Packard, Univ. Kansas Publs., Mus. Nat. Hist., 9:401, December 19, 1958. _Baiomys musculus grisescens_, Goodwin, Bull. Amer. Mus. Nat. Hist., 79(2):161, May 29, 1942 (part); Miller and Kellogg, Bull. U. S. Nat. Mus., 205:513, March 3, 1955 (part); Hall and Kelson, The Mammals of North America, 2:661, March 31, 1959 (part). _Type._--Adult female, skin and skull; No. 71605 University of Kansas Museum of Natural History; 8 mi. S Condega, Esteli, Nicaragua, obtained on July 15, 1956, by A. A. Alcorn, original number 4218. _Range._--West-central Nicaragua, from Matagalpa northwest into the valley of the Rio Esteli, east as far as Jinotega, see Figure 10. Zonal range: Upper Tropical Life-zone.