30 bulletin: museum of comparative zoology. 



teeth of the permanent dentition and are very similar in size and shape to these 

 latter. The forearm measurement of the nine adults averages about 39.5 mm. 

 (38-41). 



Peropteryx canina (Wied). 



In a paper on the mammals of Margarita Island, Venezuela (Proc. Biol. Soc. 

 Washington, 1902, vol. 15, p. 95), I referred to "Peropteryx sp.," a single dam- 

 aged specimen collected there in 1901. The Museum has since received an alco- 

 holic specimen, No. 6952, from the same island, and it seems to agree essentially 

 with specimens taken by Robinson and Lyon (Proc. U. S. Nat. Mus., 1901, 

 vol. 24, p. 159) at La Guaira, on the adjacent mainland. Its measurements are : 

 tail, 13; forearm, 43.5 ; thumb, 8.5 ; 3d digit, metacarpal, 39.4 ; 1st phalanx, 

 11.6; 2d phalanx, 19; 4th digit, 50.3 ; 5th digit, 48.6 ; tibia, 18 ; foot, 7.6; 

 calcar, 17- As the original description of P. canina contains no measurements of 

 diagnostic value, the following dimensions are added, from a male specimen in 

 alcohol taken at Rio das Velhas, Brazil (Wied's specimens were from "Brazil") : 

 tail, 13 ; forearm, 39 ; thumb, 8 ; 2d digit, 34 ; 3d digit, metacarpal, 36 ; 1st 

 phalanx, 11.3; 2d phalanx, 19 ; 4th digit, metacarpal, 30; 1st phalanx, 8 ; 2d 

 phalanx, 8 ; 5th digit, metacarpal, 30.2 ; 1st phalanx, 9.8 ; 2d phalanx, 6.5 ; 

 tibia, 18; foot, 7.4; calcar, 14.4. The dimensions of this Brazilian bat closely 

 approximate those of P. trinitatis from Trinidad (see Miller, Bull. Amer. Mus. 

 Nat. Hist., 1899, vol. 12, p. 180). 



NOCTILIONIDAE. 

 Noctilio leporinus (Linne). 



Tour alcoholic specimens, from unknown locality, show an interesting variation 

 in the proportions of tlie metacarpals. In No. 6769, the second and third meta- 

 carpals are of equal length ; but in the three other individuals, the second meta- 

 carpal is shorter than the third by 1, 2, and 4.7 mm. respectively. 



NYCTERIDAE. 

 Nycteris javanica E. Geoffrot. 



A fine series of this species was procured by Mr. Thomas Barbour, from shal- 

 low limestone caves near Buitenzorg, Java. Both sexes were found together in 

 the caves, as well as numbers of immature bats whose pelage is uniformly smoky, 

 instead of with the yellowish tint of the adults. An adult female, alcoholic. 

 No. 6810, measures as follows: total length, 120; tail, 64; ear, 26.7; forearm, 

 49.5; thumb, 17-5; 2d digit, 43; 3d digit, metacarpal, 35.5 ; 1st phalanx, 24 ; 

 2d phalanx, 27.2 ; 4th digit, metacarpal, 40.3; 1st phalanx, 13.5 ; 2d phalanx, 

 12.2; 5th digit, metacarpal, 42; 1st phalanx, 14.5; 2d phalanx, 13; tibia, 23; 

 foot, 11.3; calcar, 20.5. The forearm measurement of eight adults averages 

 about 48.2 mm. (47-49.5). 



