the Data of the Family Megadermatidae. liU 



Tiagn.i. — lioth lobes proportionally long and narrow, as 

 com|)ared with tlio-'e of Kucheint. 



Iian(/e. — From tlie Indian Peninsula and Ceylon eastward 

 as far as the Philippines, Celebes, and Ternate. 



Species. — Three, viz. : M. spasma, M. cariniatce, M. na^ 

 tunip. 



Nomenclature. — The name Megaderma was proposed by 

 GeoflTroy in 1810 (/. -f. c). Tlie author describes the four 

 species included by him in Megnderma in the following 

 order: — M. If/ray M. frons, M. trifoliumj A[. spasma. But 

 M. spasma is mentioned in the description of the genus in 

 advance of all other species (" je me suis cru fond^a consilerer 

 le V. spasma et ses cong^nferes comme formant un gioupe 

 isole/' p. 100), and in a short summary (p. 197) which 

 professes to give a view of the species in their proper order 

 (''dans I'ordre de leurs rapports") Geoffrey heads the list 

 with M. trifulium, t. e. the western race of M. spasma. In 

 accordance with the generally accepted view we tlierefore 

 regard M. spasina as the type of the genus. 



Key to the Forms. 



A. Size smaller: skull 25-27 ram. 



a. Ears shorter : from crown 27 O-30'O mm. ., 1. M. spasma. 



a'. Lower leg averaging shorter : 28-29o mm. la. M. s. spasma. 



b'. Lower leg averaging longer : 29o-33o mm. 1 b. M. s. trifolium. 



b. Ears longer : from crown 3r4-35 mm 2. M. nartmates. 



B. Size larger : skull 28"5 mm 3. .If. natuna. 



1. Megaderma spasma, L. 



Diagnosis. — Size in every respect smaller tlian in .1/. na- 

 tu7trr> ; ears shorter than in M. curiinatce. 



Details. — Distinguishable at a glance from J/, natunce by 

 the conspicuously smaller size, especially of the skull and 

 teeth. Total length of skull to front of canines 2.3-27 mm., 

 in M. natunai 28'5 mm. ; length of upper tooth-row [c-m^) 

 95-10'5 mm., in M. natuiue ll'-l mm.; forearm 53-62 mm., 

 in Al. natuncB 63 mm.* From M. carimatoi it differs only 

 by its somewhat shorter ears. 



Hange. — The same as tl at of the genus. 



Daces. — Two, viz. : M. spas7na itpasma, M. spasma trifolium. 



* We give in the letterpress a few principal dimensions onlr ; a 

 detailed comparative table of nieasurements will be found nt the end of 

 the paper (p. 144). 



