576 



Myotis mystacinus, length of head and body : length of tibia = 100 : 41,02. 



emarginatus, ... iQO : 42,5. 



montivagus, ..... ... jqO : 39,02. 



muricola, __... ... iQO : 41,02. 



- myotis, ... 100 : 36,8. 



nigrieans, ... iqq ■ 40. 



albescens, ... loO : 37^5. 



Pipistrellus annectens^, ..... ... iQO : 37,5. 



- - 100:33,3. 



pipistrellus, ----- ... lOO : 29,8. 



ahramus, ..... ... ^qO : 29,3. 



inaitrus^, ...... ... ^qO : 28,9. 



stenopterus, - -- -- - -- 100: 27,3. 



imbricatus^, - - - - - - - - 100: 30,5. 



brachypterus^, .---- ... iQO : 27,5. 



tenuis^, ... 100 : 30,3. 



I have, it is true, examined only a few species, and the measures 

 may vary somewhat in different individuals. However, the above table 

 seems to prove that the genus Pipistrellus has shorter legs than the 

 genus Myotis. This table also shows the interesting fact that the larger 

 form of Pipistrellus annectens agrees in respect to the proportion be- 

 tween the length of head and body and the length of tibia with Myotis 

 and not with Pipistrellus and that the smaller form has longer tibiae 

 than anyone of the other examined specimens of the genus Pipistrellus. 

 According to Flower^ there exists another characteristic of the 

 genus Pipistrellus., the coracoid being „sometimes forked (as in Pipi- 

 strellusY''. 



Weber 10 says about it: » . . Processus coracoideus ist stets lang 

 und gebogen, bei den meisten Vespertilionidae aber gegabelt.« 



To find out how the coracoid is in that respect I have examined 

 the following species of the subfamily Vespertilioninae, 

 Myotis myotis Bechstein 5 specimens. 

 albescens ... 2 

 dauhentonii . . 2 

 nigricans ... 3 

 muricola . . . 1 - 

 Pipistrellus annectens. . 1 

 ahramus . . 3 

 pipistrellus . 7 

 Pterygistes noctula. . . 9 

 Eptesicus sei'otinus . . 5 

 Vespertilio pachypus . . 1 



8 According to Dob son's measurements. 



9 W. H. Flower, An introduction to the osteology of the Mammalia. London 

 1885. p. 253. 



10 M. "Weber, Die Säugetiere. Jena 1904. p. 387. 



