REPORT ON THE SPHENISCID^E. 93 



It was absent in every species which I examined. Gervais and Alix, moreover, 

 observe that it is entirely wanting in Eudyptcs chrynoloplius. 



6. Supinator hrevis. 



Le court supinateur, Vicq d'Azyr, 1773, p. 573, No. 7. 

 Le court supinateur, Cuvier, vol. i. p. 299. 

 Ber Anleger des Vorderarmes, Merrem, p. 155, No. 4 (?). 

 Der dussere Speichenbeiiger, Wiedemann, p. 90. 

 Supinator, Tiedemann, p. 313, No 5. 

 Supinator ljrevis{V) Heusinger, p. 185, No. 14. 

 Le court supinateur, Meckel, vol. vi. p. 51, No. 8. 

 Der Rikkwdrtswender, Schoepss, p. 140, No. 27. 

 Supinator hrevis, Selenka, vol. vi. p. 129, No. 57. 

 Le court supinateur, Gervais and Alix, p. 26. 



Attachments. — This muscle arises by means of a delicate flattened tendon from the 

 outer surface of the lower end of the humerus, close to the external lateral ligament of 

 the elbow joint. The muscular fibres pass obliquely downwards and forwards, and are 

 inserted into the upper third of the groove on the outer surface of the radius, which 

 accommodates the tendon of the extensor carpi radialis longior. 



Action. — The supinator brevis flexes the elbow joint. 



Relations. — It rests upon the outer surface of the upper end of the radius, and is 

 concealed by the alar aponeurosis, as well as in part by the upper portion of the long 

 radial extensor. 



Nerve supply {V} 



Variaiions. — I found this muscle better developed in Aptenodytes longirostris and 

 in Spheniscus demersus than in any other species. 



(d) Muscles inserted into the Carpal Bones. 



1. Flexor carjyi idnaris. 



Le cubital interne, Vicq d'Azyr, 1773, p. 573, No. 6. 



Le cubital interne, Cuvier, vol. i. p. 319. 



Der Ausdehner des Armes, Merrem, p. 155, No. 6 (1). 



Der lange Ellejibogenbeuger, Wiedemann, p. 92. 



Flexor carpi ulnaris, Tiedemann, p. 320, No. 5. 



Ellenbogcn-Hiiudumrzelbeiiger, Heusinger, p. 189, No. 26. 



FlecMsseur cubital, Meckel, vol. vi. p. 59, No. 8. 



Lunger Beuger des Handwurzeh, Schoepss, p. 154, No. 35. 



Flexor carpi ulnaris, Selenka, vol. vi. p. 133, No. 64. 



Cubital antfrieur, Gervais and AH.k, p. 29. 



Attachments. — This muscle is entia'ely replaced by tendon. It arises from the inner 

 side of the lower end of the humerus, immediately behind the origin of the tendon which 



