ATALAPHA.—VESPERTILIO. 23 
wide range, extending over a great portion of North and South America; for I follow 
Mr. Dobson in regarding the various Neotropical forms as not being specifically distinct. 
The Central-American race (named A. frantzii by Professor Peters, in honour of Dr. v. 
Frantzius") only differs from typical A. noveboracensis in the ears and tragus being 
slightly smaller, in the fur being shorter behind the forearm and not extending quite 
to the edge of the interfemoral membrane, and in the rufous colour being brighter. 
These differences seem to be the natural effect of a tropical climate; and even in the 
United States Dr. H. Allen observes that specimens from the warmer parts of the 
country are of a brighter red than those from the more northern States. This variety 
has also been recorded from Brazil and Chili, while other Neotropical forms have been 
separated as A. pfeifferi, Gundlach, and A. varia (Pceppig). 
rd Atalapha cinerea. 
Vespertilio cinereus, Beauvois, Cat. Peale’s Mus. p. 14° (1796, deser. orig.; fide H. Allen, Mon. 
Bats 'N. Am. p. 21)’. 
Vespertilio pruinosus, Say, Long’s Exped. p. 67 (1823, descr. orig.) °. 
Lasiurus grayi, Tomes, P. Z.S. 1857, p. 40 (descr. orig.) *. 
Atalapha cinerea, Peters, Monatsb. Ak. Berl. 1870, p. 910°; Dobson, Cat. Chir. Brit. Mus. p. 272, 
t. xvi. figs. 1, 2°. 
Hab. Norra America, from Nova Scotia.—Soutn America, to Chili. 
Mr. Dobson remarks that the Neotropical form separated as Lasiurus grayt only 
differs from the typical Nearctic Atalapha cinerea in being slightly smaller, in having 
the inner edge of the ear-conch somewhat less convex, and in the colour of the fur 
being more rufous®. Regarding these differences as of less than specific value, the 
range of A. cinerea would appear to be very much that of the last species, in which we 
have seen an exactly similar variety in coloration in the northern and southern races. 
There can therefore be little doubt that the species must exist in Central America, 
although I cannot find that it is represented in any of the collections hitherto sent to 
Europe. 
3. VESPERTILIO. 
Vespertilio, Linneus, Syst. Nat. i. p. 46 (1766) [as restricted by Keyserling and Blasius, Arch. f. 
Naturg. v. 1, p. 306 (1839) ]. 
The Bats of the typical genus Vespertilio differ from those already described in 
having three pairs of upper premolars. Their ears are long and narrow, with the 
outer margin rising, not near the angle of the mouth, as in Vesperugo and Atalapha, 
‘but nearly in a line with the base of the tragus. The latter is long, narrow, and 
