1906.] Allen, Mammals from Western Mexico. 237 



phase there is every stage of gradation; the younger examples are 

 sooty gray, the darkest of the series. 



41. Dermanura phaeotis (Miller). 



Two specimens, Escuinapa, Nov. 9, July 20. 



II. MAMMALS FROM THE STATE OF JALISCO. 



Mr. Batty broke camp at Escuinapa, Sinaloa, November 10, 

 1904, and moved south with his pack train of burros across the lagoon 

 country, arriving at San Marcos, Jalisco, December 6. His first 

 collecting camp was at Arroyo Gavalan, about 20 miles west of San 

 Marcos, where collections were made from December 1726, 1904. 

 From January i to March 30, 1905, work was prosecuted from various 

 camps at and near Amatlan de Can as, practically on the boundary 

 line between Jalisco and Tepic, at an altitude of about 5000 feet. 

 Mr. Batty states in one of his letters that " Ojo de Agua, Palo Amarillo, 

 Estancia, Llano e Casco, Rio Ameca, etc. [=Rio Sta. Maria, Garabatos, 

 Arroyo de Plant anar], all local names not on maps, are near and 

 about Amatlan de Canas, Tepic." Some of them are just over the 

 line in Tepic, others are on the Jalisco side of the boundary. He left 

 Llano e Casco April 13, moving southward about 30 or 40 miles to 

 La Cienega, Jalisco, where he worked for the next ten days. This 

 camp is "on the tableland formed by the first or eastern range of the 

 Espirito de Santos Mountains, at an elevation of about 7000 feet." 

 "La Cienega," he says, "is one of the few places that have water 

 during the dry season. In the llano and in the arroyos are many 

 small springs, and a small swampy pasture; hence its name, La 

 Cienega or The Swamp. Snow has appeared many times, and it 

 is said that about forty years ago a heavy storm occurred, leaving 

 nearly two feet of snow on the level. Hailstones are of frequent 

 occurrence, even in spring and fall. The nights are always chilly, 

 and during the dry season, from the middle of October to the middle 

 of June, w r ater sometimes freezes, and white frosts are common. 

 The surrounding country is mountainous and very rocky, sparsely 

 covered with pines and oaks." 



His next station was in the Wakenakili Mountains, one day's 

 journey from La Cienega, and at about the same altitude, which 

 locality he describes as follows: "A small range of mountains running 

 southeast; highest points about 7000 to 8000 feet. Bounded on 

 the east by the large Arroyo de Colomos, and on the west by the deep 

 canon-like valley of the Rio Santa Maria. The mountains abound 

 in cliffs and deep arroyos, and are sparsely timbered with small pines, 



