The GeogiiipJiiiuil Rtics of the Tayra. Wj 



XV. — -1 new Bat from the Key Islands. 



By Oldfield Thomas. 



Rhinohphus ackt'lles, sp. n. 



Allird to R/i. nn'tratus and li/i. phili/tpinensi's^ but the 

 aural and nasal nimihrancs even more devolopedj the ear.i 

 suggesting those of a Nt/cteri's, and the nose-loaf that of a 

 Meijaderma. Nose-leaf in essential structure as in p/iilippi- 

 nensi's, 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 pht/ifij>ineiisis • it is broader poste- 

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

 anterior and posterior breadths are more nearly equal. Horse- 

 shoe membrane much broader than the muzzle ; terminal 

 nose-leaf K^rge, not acutely pointed. Ears enormous, reaching 

 when laid forward nearly half an inch beyond the long 

 muzzle, their shape about as in philippineusis^ the notch 

 behind the antitragus much deeper than in mitratus. Lower 

 lip with three grooves. Furdaik brown above, rather greyer 

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

 projecting. 



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



Forearm 555 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 24. 



llob. Key Islands. 



Type. B.M. no. \)S). 12.4. 5. 



'i'his species may be readily distinguished from any known 

 BhinoJophus by tlie unusual development of its ears and 

 nasal membranes. 



XVL — The Geographical Races of the Tayra (Galictis 

 barbara), xoith 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 subspecilic 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 tlieref<ire being available for the two northeru 

 Ann. d- M<«j. .V. Hint. Ser. 7. Vol. v. lu 



