76 BULLETIN 43, UNITED STATES NATIONAL MUSEUM. 



F. subulatus Harlan, Fauna Americana, 1825, 22 (not Say) ; Richardson, Fauna Boreal. 

 Amer., i, 1829, 3 ; (iodman, Amer. Nat. Hist., i, 1831, 71 ; Cooper, Ann. Lye. N. Y., 



IV, 1837, 61; De Kay, Nat. Hist. N. Y. (ZooL), 1842, 8; Wagner, Sclireb. Sliugeth. 



V, 185.5, 750, Lecoute, Proc. Acad. Nat. Sci. Phila., 1855, 436; H. Allen, Monog. 

 N. A. Bats, 1864, 51; Dobson, Cat. Chirop. Brit. Mus. 1878, 324. 



As indicated by the synonymy, tins bat is tlie same as the V. subulatus 

 of the hrst edition of the Monograph. 



Maj. Leconte rehabilitated V. subulatus, Say, (see Appendix), and sub- 

 secpient writers accepted this writer's determination. The tyi)e is lost. 

 The original diagnosis was remarkable in four respects: It described 

 the lower canine as bifid on one side — an anomaly I have never seen; 

 it was drawn up from an immature individual; it was of a dull cinere- 

 ous color on the dorsum, and had hairs on the free border of the inter- 

 femoral membrane. The specimen was secured ou the Cliarles River, 

 one of the sources of the Arkansas, in a section now near Pueblo in 

 southwestern Colorado. 



The only specimens of VespertiUo which have been described from 

 regions near the one described are V. nitidus macropus, nob., which was 

 obtained from Fort Whipple, Ariz., and F. nitidus ciliolabrum, Merriam, 

 which was collected in western Kansas. 



In one of the four si)ecimens of T'. nitidus onacropus in my possession 

 the color of the fur might easily be said to have a grayish cast, though 

 the predominant color is brown. The question at once arises, can a 

 specimen of YespertiHo collected in southwestern Colorado on the eastern 

 slope of the Rocky Mountains be said justly to be the same as those 

 which frequent the Eastern and Gulf States? I believe this question 

 must be answered negatively, so long as I hold to my present oinnion 

 that western and eastern forms are distinct. It is agreed that the 

 ninety-eighth i^arallel represents the line which separates the two sec- 

 tions, and since Charles River lies well within the western section, there 

 appears to be no longer a doubt that V. subulatus is western in its affini- 

 ties. Since the description of Say, therefore, can not apply, it is neces- 

 sary to determine which of the numerous names given to the eastern 

 form is available. 



The diagnoses of Fr. Cuvier {I. c.) might all aj^i^ly — three of them to 

 the Northern ( V. gryphus, V. salarli, and V. crassus) and three to the 

 Southern varieties ( V. creeks, V. georgiamis, and V. subjlavus). Y.geor- 

 gianus was sent to Cuvier by Maj. Leconte and the name was accei)ted 

 by the donor of the specimen as api^licable to the form described in 

 this memoir under the name Vcsperugo carolinensis. Of the remaining 

 species it would appear to be appropriate to select the first in the order 

 of the description. If this plan be accepted VespertiUo gryphus, Fr. 

 Cuvier, is the name of the eastern species. The term "murinoid" of 

 this writer happily gives the reader a clue to the affinity of the species, 

 since VespertiUo muriiius of Europe resembles our species of VespertiUo 

 in many respects. The presence of two additional molars iu the upper 

 jaw as contrasted with the number in V. creeks the " serotinoid " bat /. e. 



