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NORTH AMERICAN FAUNA. 



Skull. — The skiill of VespertiUo fuscus miradoyensis is slightly larger 

 and sollle^Yhat less flattened than that of true fuscus. The skull of all 

 adult male from Tehuacan, Puebla, measures: Occipito-uasal length, 

 19.5 mm.; zygomatic breadth, lo; mandible, 14.."). The occiput, although 

 developing even more strongly marked ridges than in the typical sub- 

 species, appears less sharply 'peaked' behind when viewed from the side. 



Teetii. — The teeth are heavier than in true fuscns^ and the crown of 

 the middle upper molar is broader on its inner side, but no tangible 

 dental characters can be established to separate the large subspecies. 



'Measurements. — See table, page 103. 



Specimens examined. — Total number, 17, from the following localities: 



Costa Eica: San Jose, 1, 



Guatemala: Ziiful, Quezalteuano-o, 1. 



Mexico: Valley of Toluca, 2 (skius) ; Ixtapalapa, 2. 



Oaxaca: Cerro Sail Felipe^ 1; Oaxaca. 1. 



Puebla: Teliuacau, 3 (1 skiu). 



Tlaxcala: Mt. Maliuelie, 1. 



Vera Cruz: Jico, 1; Las Vigas, 2; Tnxpaugo, 2 (slcins). 



VESPERTILIO FUSCUS PEOPINQUUS (Peters). 



1872. Tesperns irropin([uus Peters, Mouatsber. K. Preuss. Akad. Wiss.. Berlin, p. 262. 

 1878. VesperiKjo propinqnns Dobsou, Catal. Cliiroptera Brit. Mus., p. 203. 



Type locality. — Santa Ysabel, Guatemala. 



Geograpliic distrihntion. — In addition to the type the only known 

 specimen of Yespertilio fuscus propimiuus is from Greytown, Nicaragua. 



General cliaractcrs, — Size very small (total length, 9G to 105; tail 

 vertebrae, 37 to 15; longest finger, OS; ear, 11 to 15) : breadth of muzzle 

 distinctly more than half length of head; colors dark. 



Ears. — The ears in VespertiUo fuscus propinquus are proportionally 

 shorter and broader than in Xy\)iQ2i\fuscus, and the tips are distinctly 

 more broadl}^ ri unded. They are haired in exactly the same manner 

 as in triiQ fuscus. The ear membranes are thin and membranaceous, 

 like those of the other sonthern races. 



Membranes and feet. — Except for their smaller size, the mend^ranes 

 and feet are exactly as in true fuscus^ though the membranes, like tlie 

 ears, are thinner and less leathery. 



Fur and color. — The fur is shorter than in true fuscus, averaging only 

 about 7 mm. on back. There is nothing peculiar in its distribution. 

 In the single alcoholic specimen that 1 have seen the color is about as 

 in V. fuscus miradi>rensis. Peters, however, describes the color of the 

 type specimen as rust red.^ This is much brighter than the Greytown. 

 specimen, but the color may be due to staining while in alcohol. 



Measurements. — See table, page 103. 



Specintt-ns examined. — I have seen only one specimen of VespertiU 

 fnscus propinquus. This was collected by Mr. Charles W. Eichmond at 

 Greytown, Nicaragua ( 9 ad., No. 52790, U. S. National Museum 

 Dept. of Agriculture collection !. 



^ •'•'Oben rostrotli, die Ha are an der Basis schwarz u-aun, Bauchseitc Idasser. indein 

 die an der Basis schwarzbraunen Haare bier nielir rostgelbo S])itzen baben."' 



