CniROPTERAV VOTES 



17. Myotic <lrya,>- 



a, b. c/" ad., Q ad. Port Blair, S. Aiidaiiiau; August 1891. Received from 

 Prof. E. H. Giglioli. Genoa Museum. — Cotype^ of tlie species; the 

 one in the Genoa Museum, the other presented by Marquis G. Doria 

 to the British Museum (no. 6.UM.3Ì). 



Diagnosis. — Apparently allied to Myotis adversus ITorsf., 

 l)ut cranial rostrum lower, p'' (middle upper premolar) in row, 

 outer margin of ear-conch more deeply and abruptly emarginated 

 above, and foot markedly smaller. Forearm (two specimens, the 

 types) 38.0-39.8 mm. 



Skull. — Of tlie skull of the type specimen of Horsfield's 

 M. adversus, from Java (a skin in alcohol, Brit. Mus. no. 7'.). 11. 

 "21. 153) only the front half, with the tooth-rows complete, has 

 been preserved, and no other examples of this species from Java 

 are available for comparison. Judging from this skull fragment, 

 the skulls of M. adversus and dryas are prolmbly very nearly 

 of ecjual size, but the rostrum of M. dryas is considerably lower, 

 1)()th in front and, especially, posteriorly, and the bony palate is 

 a little narrower; height of rostrum from alveolar border level of 

 front of m\ in M. adversus 3.8 mm., in M. dryas about 3 mm.; 

 maxillary width, externally, across antero-external corners of 

 m^-m^, in M. adversus ().8 mm., in M. dryas G.l-().3 mm. 



Teeth. — In M. dryas the cusps of the bifid inner upper 

 incisor are almost of equal length (vertical extent), in M. adversus 

 the outer is decidedly shorter than the inner cusp; in the skulls 

 of both specimens these tee-th are practically unworn. In M. dryas 

 p^ (middle upper premolar) is situated in the tooth-row, with but 

 a very slight tendency towards the lingual side, p^ and p^ there- 

 fore quite separated, and p'' distinctly visible from without; p^ 

 in cross section at base (coronal aspect) equal to, or a little more 

 than, half the area of p^; in M. adversus p^ is situated comple- 

 tely internal to the tooth-row, not visible from without, p^ and 

 p^ in contact, and p^ in cross section at base equal to about -^ 

 of p^ Also P3 is in M, dryas less reduced in size ; in cross 



