lOG THE MYOLOGY OF THE RAVEN. 



Tliey have been noticed by every anatomist wlio has 

 at any time interested himself with the morphology of the 

 group,while the lamented Garrod successfully pointed out 

 the fact as to how they might be used, and really were 

 valuable factors in taxonomy. In the Collected Scientific 

 Papers of this last authority we find them alluded to in 

 the following words, viz.: — "In the triangular patagium 

 of the wing of the bird the tendons of two muscles are 

 to 1)6 found. One is that of the tensor j^cttagii longus, 

 which forms the supporting cord of the free margin of 

 the meml)rane itself. The second is that of the tenso)- 

 2?atagii hrevis, which courses j)arallel wdth the humerus, 

 not distant from that bone, to the muscles and fascise 

 of the forearm." Professor Garrod follows these remarks 

 hj a full and clear description of the peculiarities of 

 these muscles in the vast numljer (200+) of birds which 

 he had especially dissected and examined in relation 

 to this particular structure. 



His highly valuable contril)utions are rather too long 

 to incorporate in the present connection, Init they will 

 l)e found in the Proceedings of the Zoologiccd Society 

 of London for 1877 (pp. 506-19) and in that rare 

 and imperishable work, his Collected Scientific Papers, 

 edited Ijy the late Mr. W. A. Forljes, another labourer 

 in the same field, whose loss to us it is hard to over- 

 estimate. 



Professor Owen's account of these fleshy slips runs 

 thus : — 



" A remarkable muscle, partly analogous in its 

 origin to the clavicular portion of the deltoid, but dif- 

 ferently inserted, is the extensor pliccB alaris, and 

 forms one of the most powerful flexors of the cubit. 

 It is divided into two portions, of which the anterior 

 and shorter arises from the internal tuberosity of the 



