294 



NEW SPECIES OF BAT ALLEN. 



Height of tragus : . . . 6 



Length of thigh 11 



Length of tibia 13 



Length of foot 10 



Length of iuterfenioral membrane 15 



Length of tail 8 



Costa Rica. Collections of National Museum. Collected by J. C. Zeledon. 



The niue specimens of G. hrevicauda, wbicli formed the basis of my 

 study, were chiefly interesting from the measurements which were made 

 of the peripheral parts. These are arranged in tabular form : 



liable of measuremenia. 



Carollia brevicamla. 



3997? 



3129? 



3128? 



3231 ? 



4192 cf 



Carollia 

 castanea. 



Arm* , 



Forearm t 



J ( Metacarpal 



I First phalanx 



TT ( Metacarpal. .., 



\ First phalanx 



C Metacarpal. 



T-TT j First phalanx .. 

 ) Second phalanx 



I Third phalanx 



I Metacarpal 



I V" < First phalanx 



( Second phalanx . . . 



f Metacarpal 



V I First phalanx 



(Second phalanx ... 



Femur 



Til)ia 



Foot 



Tail 



Head 



Auriclel 



Tragus^ 



Width of second 



digital interspace. 



Width of third 



digital interspace. 



Width of fourth 



digital interspace. 



mm. 



26 

 37 



mm. 

 28 

 40 

 5 

 5 

 27 

 4 

 36 

 17 

 21i 

 11 

 35 

 11 



35 

 12 

 11 

 12 

 16 

 11 

 6 

 24 

 13 



m m.. 

 2.5 

 37 



4 



4 

 30 



3 

 35 

 14 

 20 

 U 

 34 

 13 

 13 

 35 

 12 

 11 

 13 

 15 

 11 



22 



12 



* From top of shoulder to epicondyle. 

 t From epicondyle to end of radius. 

 t From outer border posteriorly. 

 § Outer border. 



With the exception of the foot, which is coustantly 11™'" long, all the 

 measurements are subject to variation — indeed, no two specimens in all 

 respects are alike. This statement is made while making due allowance 

 for the difficulty in taking some of the measurements, as for example 

 those of the thigh and of the membranous expansions. Specimens 

 which had been macerated in weak alcohol were rejected. But among 

 those which were accepted it was not always possible to determine 

 (owing to the contraction of, the tissues), the exact extent to which the 

 parts should be extended, so as to represent as far as possible theposi- 



