﻿MYOTIS SUBULATUS. 



75 



Measurements. — Tlie average measuremeDts of 10 si)ecimeus Myotis 

 nigricans from Huehuetan, Chiapas are given in tlie following table: 



Average measurements of 10 specimens of Myotis nigricans. 





O to 



a 



gth. 



i 











CO 



6 



s 



ear. 





Locality. 



nber 



al leu 





s 





;-( 

 ® 



3 



igest 

 ger. 



S i 



O Ei 



-t=i 



o 



m 



So 





p ft 



"o 







o 

 o 



o 





B 



O 



u 





c3 

 U 







H 



H 



H 







H 









H 





10?? 



76.7 



35 



13.6 



6.9 



33.5 



4.4 



57 



12.7 



1 



8.6 6.6 



Speeimem examined. — Total number, 34 ; all from Huelmetan, Cbiapas 

 (altitude about 300 feet). 



General reinarlcs. — Myotis nigricans differs from M. californicus in 

 numerous characters, each of which is trivial in itself but which with 

 the others goes to make up a sum quite different from that shown by 

 any other North American bat. The constancy in color of the 10 skins 

 by which this species is represented in the Biological Survey collection 

 is very remarkable. , 



MYOTIS SUBULATUS (Say). Say's Bat. 



1823. ? Vespertilio suhulaius Say, Long's Exped. to Rocky Mts., II, p. 65, footnote 



(Arkansas River, near La Junta, Colorado), 

 1864. Ves2)erUlio suhulatus H. Allen, Monogr. N. Am. Bats, p. 51. 

 1878. Vespertilio suhulatus Dobson, Catal. Cliiroptera Brit. Mus., p. 321. 

 1893. Vespertilio grypJius var. (b). Northern form of VcsperiUio gryphus, H. Allen, 



Monogr. Bats N. Am., p. 80. 

 1897. Vesjyertilio gryphus var. septentrionalis Trotiessart, Catal. Mamm. t. ^'ivent. q. 



Foss., p. 131. (Only name undoubtedly based on this animal.) 



Type locality. — Arkansas Eiver, near La Junta, Colorado. 

 Geographical distribution. — ^^orth America east of the Eocky Moun- 

 tains. 



General characters. — Size medium; length 80 to 90; forearm 34 to 

 37. Oalcar slender, slightly longer than free border of uropatagium, 

 terminating indistinctly or with a slightly developed lobule; keel rudi- 

 mentary or absent. Free border of uropatagium naked. Ears long, 

 reaching 2 to 5 mm. beyond tip of nose. Wings from base of toes. 



Ears. — The ears (fig. 13a) are long and slender, reaching when laid 

 forward, 2 to 5 mm. beyond tip of nose. Anterior border straight from 

 base to near middle, then for a varying distance moderately convex, 

 finally straight to narrowly rounded off tip. Posterior border concave 

 from point immediately below tip to about middle, Avhere it becomes 

 convex and continues so to basal notch. Basal notch strongly marked, 

 isolating a narrow and very conspicuous lobe. 



Tragus slender, straight, or slightly bent backward. Anterior bor- 

 der straight throughout or slightly convex near tip. Posterior border 

 straight or evenly and slightly concave from tip to widest point, which 

 is opposite or slightly above level of anterior base. Basal lobe small. 



