210 SHUFELDT. 



Limbs.— The comparison of the bones of the limbs, although made 

 with care, need not be entered upon to any extent in the matter of 

 description. In the main tlie long bones are very much slenderer in 

 Galeopterus (number 49640) than they are in the specimen of Cyno-- 

 cephalus collected by Steere, while they vary very little in their lengths. 

 This is especially well seen in the humeri and in the femora. 



In the forearm of Galeopterus the radius and ulna still remain distinct 

 in the adult, though the ligamentous union is very close, and in very old 

 animals it is just possible that coossification may take place distally 

 between these two bones. It is fair to presume that for this character 

 Owen, Huxley, and Flower examined old adult specimens of some Ma- 

 layan flying lemur in the collection of the British Museum or at the Eoyal 

 College of Surgeons and that without forcing maceration far enough to 

 separate the bones, they came to the conclusion that osseous union had 

 taken place between the radius and ulna distally. Mr. Gerrit MiUer 

 was kind enough to examine this character with me, and even went so 

 far as to macerate for several days the forearms of the old Galeopterus 

 and the young one in the National Museum collection, and became 

 convinced of the above facts as here set forth. 



The scapulse and clavicles of these two genera are quite similar, and 

 in animals of the same age the differences are scarcely noticeable. 



