272 VESPEKXILIONID^. 



/. S ad., al. New York. Purcliased, 



g. 5 ad., al. New York. 



h-j. ad. sk. Nortli America. J. Gould, Esq[. [P.]. 



k. (J ad., al. North America. Dr. J. Green [P.J. 



I. 5 ad., al. St. Louis. Smithsonian Institute [P-l- 



m, n. (S & 2 ad., al. St. Louis. Smithsonian Listitute [P.]. 



o. ad. sk. No history. 



p, q. M. Lidth de Jeude [C.]. 



Var. a {A. frmiizii, Peters) . 



r. ad. sk. Duenas, Guatemala. 0. Salvin, Esq. [C.l. 



s. 5 ad., al. Duenas, Guatemala. 0. Salvin, Esq. 0.1. 



t, u. (J ad., al, Jamaica. P. H. Gosse, Esq. [C.l 



■V. ad. sk. Pernambuco. J. P. G. Smith, Esq. [P.]. 



w, X. ad. sk. Brazil. 



y. ad. sk. Chili. Purchased. 



z. c? ad., al. Mendoca. Purchased. 



a', ad. sk. 



6'. skull of 0. 



c'. skull of w. 



2. Atalapha cinerea. 



Vespertilio cinereus, Palisot de Beauvois, Catal. Peale's Mm. Philad. 

 1796 (vide Allen, Bats of N. America, p. 21). 



Vespertilio pruinosus, Saij, Long's Exped. Rocky Mount, p. 67 (1823) ; 

 Cooper, Ann. Lye. New York, iv. p. 54 (1837). 



Scotophilus pruinosus, Oray, Mag. Zool. ^ Bot. ii. p. 498 (1838). 



Nycticejus pruinosus, Temminnk, Monogr. Mammal, ii. p. 154 (1835- 

 41) ; Wagner, Suppl. Schreb. Sdugeth. i. p. 544 (1844), v. p. 770 

 (1855). 



Lasiurus pruinosus, Oray, List of Mammalia in Coll. Brit. Mas. 

 (1843) ; Tomes, P. Z. S. 1857, p. 37. 



Lasiurus cinereus, H. Allen, I. c. ; J. A. Allen, Maimnals of Massa- 

 chusetts, p. 208. 



Atalapha cinerea, Peters, MB. Akad. Berl. 1870, p. 910. 



The muzzle, nostrils, and ears are very similar in shape to those 

 of A. noveboraeensis, except that the inner margin of the ear is 

 more evenly rounded, and the terminal lobe of the outer margin 

 near the angle of the mouth is not incised in front. The tragus 

 attains its greatest width opposite the base of the inner margin, 

 forming there an acute angular projection, or elbow ; at the base of 

 the outer margin a small rounded lobe, the outer margin then slopes 

 outwards to this angle, from which it slopes upwards and inwards 

 to the tip ; about four fifths of the inner margin is straight, then 

 slightly convex above, causing the rounded tip to project inwards. 



Wings to the base of the toes ; extreme tip of tail projecting. 



The distribution of the fur upon the wing-membranes is very 

 similar to that of A. noveboraeensis ; but the interfemoral membrane, 

 though completely covered, is not clothed quite so densely behind 

 as in that species. A ver)' small patch of short white hairs occurs 

 on the back of the forearm, near the elbow ; this is not found in 

 A. noveboraeensis, and affords an easy method of distinguishing spe- 



