The Oeographical Races of the Tayra. 145 



XV. — A new Bat from the Key Islands. 

 By Oldfield Thomas. 



Rhinolophus achilles, sp. n. 



Allied to Rh. mitraius and Rh. philippinensis^ but the 

 aural and nasal membranes even more developed, the ears 

 suggesting those of a Nycteris, and the nose-leaf that of a 

 Megaderma. Nose-leaf in essential structure as in pJiilippi- 

 nensis, but much larger; expansion of horizontal base of 

 sella very wide, its greatest breadth equalling or exceeding 

 the height of the vertical part of the sella, and double the 

 corresponding breadth in philippinensis ; it is broader poste- 

 riorly, tapering evenly forward, wiiile in the allied species the 

 anterior and posterior breadths are more nearly equal. Horse- 

 shoe membrane much broader than the muzzle ; terminal 

 nose-leaf large, not acutely pointed. Ears enormous, reaching 

 when laid forward nearly half an inch beyond the long 

 muzzle, their shape about as in philipptnensi's, the notch 

 behind the antitragus much deeper than in mitratus. Lower 

 lip with three grooves. Fur dark brown above, rather greyer 

 below. Wings to the end of the tibite. Extreme tip of tail 

 projecting. 



Dimensions of the type (an adult male, in spirit) : — 



Forearm 55'5 millim. 



Head and body 55 ; tail 31 ; hind foot, including claws, 11 ; 

 head 25; ear from inner base 30; nose-leaf 21 x 12 ; sella, 

 height 8*5, breadth of basal expansion 8'5. Lower leg 21:, 



Hoh. Key Islands. 



Type. B.M. no. 99. 12. 4. 5. 



This species may be readily distinguished from any known 

 Rhinolophus by tlie unusual development of its ears and 

 nasal membranes. 



XVL — The Geographical Races of the Tayra (Galictis 

 barbara), with Notes on Abnormally Coloured Individuals, 

 By Oldfield Thomas. 



On laying out the British Museum series of the Tayra it 

 is seen at once that it falls readily, apart from the colour 

 abnormalities to be mentioned further on, into three geo- 

 graphical colour races — Mexican, Central American, and South 

 American; and in trying to put the proper subspecific names 

 on each of them I find that the whole of the many technical 

 names that occur in the synonymy of the Tayra have been 

 applied to examples from Guiana, Brazil, Paraguay, or Peru, 

 none of them therefore being available for the two northern 

 Ann. & Mag. N, Hist. Ser. 7. Vol v. 10 



