228 PROCEEDINGS OF THE ACADEMY OF [1897. 



ever, has a relatively shorter and wider skull with more abruptly 

 depressed facial plane in the three specimens used in this compari- 

 son. 



Measurements of type. — Total length, 83 millimeters ; tail verte- 

 bra?, 32 ; hind foot, 7.5. Skull : total length, 14 ; zygomatic 

 breadth, 8 ; length of mandible, 10.5. 



Specimens in the series date from the last of June to the middle 

 of September, some having been taken in Aumist, showing that this 

 is a resident Floridian form and in no sense a winter migrant from 

 northern latitudes. Neither is it to be confounded with V. albes- 

 cens of Is. Geoff. St. Hilaire, differing therefrom in respect to the 

 shape of tragus and coloration of the lower jaw, precisely as does 

 typical lucifugus. 



Of the names already given to a possible southeastern form of 

 lucifugus, I fiiid none which can be referred to as possibly applica- 

 ble to austroriparius except V. subflavus of F. Cuvier, 2 from Georgia. 

 In Cuvier's description subflavus is said to have the tragus half 

 heart-shaped, and the body colors are so light both above and be- 

 low as to suggest a light colored Vesperugo carolinensis. Cuvier's 

 subflavus is virtually unidentifiable, though Dr. Allen thinks it per- 

 haps referable to " gryphus." 



2 Xouv. Ann. du Mus. Hist. Nat., 1832, p. 15. 



