114 MR. K. ANDERSEN ON BATS [May 16, 



Details. — (1) Compared with obscurus : tlie subjoined particulars 

 will make the difference evident : — 



59 specimens of the typical form have been examined from the 

 following localities : — Transcaspia (1) ; Euphrates Yalley (3) ; 

 Syria (2); Galilee (2); Cyprus (2); N. Bulgaria (1); Trans- 

 sylvania (31); Hungary (1); Moravia (2); Dalmatia (2); Turin 

 (1) ; Genoa (1) ; Sicily (2) ; Switzerland (Tessin and Geneva* 7) ; 

 Tubingen (1). 



Forearm., in these specimens, on cm average 57-5 mm. In no 

 less than 44, i. e. 75 per cent,, the forearm measures 57 mm. or 

 more (up to 60"3 mm.) ; in the remaining (and quite independent 

 of the locality) less than 57 mm. (down to 53-5 mm.). 



Of obscurus 31 specimens have been examined from :— Troubate, 

 Hautes- Pyrenees (8) ; Ointra, Portugal (1) ; Madrid (3) ; Valenciat 

 (12); Minorca (5); Algeria (2). 



Forearm, in these specimens, on an average 55'5 mm. In no 

 less than 25, i. e. 81 per cent., the forearm measures less than 



57 mm. (down to 52'8 mm.) ; in the remaining between 57 and 



58 mm. Although the series is smaller than that of the typical 

 form, the facts here pointed out cannot be due to mere chance; 

 the contrast is too well marked. 



As a conclusion : in the typical form the forearm measures 

 generally 57 mm. or more ; in obscivnis almost always less than 

 57 mm. ; maximum of obscurus is but a trifle larger than the 

 average size of the typical foim. 



(2) Compared with the eastern races : the proportionately 

 longer tail prevents, in almost all cases, its confusion with any of 

 these races. The skull is rather easily discriminated from that 

 of tragatus &\\dregulus {cf. measurements, p. 115), but I fail to find 

 any point by which to distinguish it from the Japanese nippon. 



British sjjecimens. 1 3 specimens have been examined . Forearm, 

 on an average 55*4 mm., i. e., British specimens oi ferrum-equinum, 

 are on an average of the same size as the extreme south-western 

 (Spanish) race, i?A./. oSscwr-ifs J. Of the 13 specimens, 2 only 

 have the forearm 57 mm. long or more (up to 58 mm., quite as in 

 obscurus); all the others between 53'8 and 56-2 mm. These indi- 

 cations require, of course, verification by a much larger series §. 



Dentition (11 skulls). In seven skulls Pg is present on both sides 

 (teeth in very different stages of weai-) ; in one, on one side only 

 (teeth worn); in three (teeth almost unworn, or much worn) 

 completely wanting (no alveoli), p^ is present in all the skulls 

 examined, two of which are of very aged individuals. Cingula of 

 the upper canine and p" generally more or less overlapping, but 

 in two skidls separated by an extremely small interspace. This 

 dentition is almost exactly as in nip2)on. 



* For the loan of some Bats from the neighbourhood of Geneva I am indebted to 

 M. Ch. Mottaz. 



f A very elaborate table of measurements of fourteen Spanish specimens was 

 kindly sent to me by Prof . A. Cabrera Latorre, Madrid. These are the only examples, 

 dealt with in this paper, not examined by myself. 



% Compare with this Wi. Mpposidervs minutus, below, p. 142. 

 § To keep the typical form uninfluenced by the smaller British individuals, I 

 exclude these latter from the table of measurements on p. 115. 



