CHIKOPTERA VESPERTILIONID.E VESl'EKTILIO FUSUUS. J)3 



ursimts, TEMM., MOQ. Mamm., ii, 1835, 235. WAGN., Suppl. Schreb., v, 

 1855, 750. LE(JONTE, Proc. Aciul. Nat. Sci. Phila., 1855, 434. 



? Vespertilio gryphus, FR. Guv., Auu. Mus., i, 1837, 15. WAGN., Suppl. Schreb., v, 

 1855, 749. 



Vespertilio caroli, LECONTE (nee Temm.), Proc. Acad. Nat. Sci. Phila., 1855,435. 



44 

 CHAKS. Molars, - r ; the front upper one uarrower than the rest, corresponding 



to the third one (last premolar) of Vespertilio proper ; the two front lower ones smaller 



o_*> 

 than the other three. Incisors, ^ ; the lateral upper pair much smaller than the 



o o 



central pair. Base of foot with a rounded swelling. Tip of tail exserted. Wiug- 

 luembrane reaching base of toes. No extension of fur on the wing-membranes; leg- 

 membrane triangular, furred at basal fifth on upper side, elsewhere more or less per- 

 fectly naked. Ears moderate, leathery, furred - way up the back, turned more or 

 less outward, with convex inner and straight or slightly emarginate outer border, and 

 well-developed basal lobe; tragus nearly half as high as auricle, tip never pointed, 

 outer border notched near the base. Nostrils emargiuate ; head flat. Hairs dark 

 plumbeous, or dark cinereous on the basal part, a variable shade of brown at the ends, 

 usually lighter on the under surface of the body than on the upper. Length, 3-4 ; tail, 

 alone, 1-1 ; extent, 10-12; longest finger, 2f-3; arm, 1J-2 ; shin, -; ear, about 

 4 high. 



HAB. United States. 



Dr. Allen has noted three different styles of coloration in this species. 

 In one, the ends of the hairs are chestnut-brown above, grayish-white below ; 

 in another, olive-brown above, fawn-russet and whitish below ; in a third, 

 deep chestnut above, and scarcely lighter below ; while occasionally the 

 whole fur shows white tips (much as in case of A. cinerea). The same 

 author expresses the hesitation he felt in separating V. fuscus and carolinen- 

 sis, in reuniting which we have none, thus indorsing Mr. J. A. Allen's view. 



This species, the dentition of which prevents confusion with any other, 

 has been reported from various and widely-separated localities all over the 

 United States. Mr. Allen says it is " common " in Massachusetts. 



Several specimens were collected in Arizona in 1873. 



Specimens. 



NOTE. Specimen 658 has the membrane much more transparent than the others. 



