THE MUSCLES OF THE UPPER EXTREMITY. 119 



For nearly its entire lengtli the deltoid is intimately 

 attached to the triceps by fascia, more especially to its 

 long head, where it comes in contact with that sli23 of 

 the former which passes round the shonlder-joint. 



71. The tricej)s^ muscle in the Eaven is divided into 

 three portions, an internal and external head, and a long 

 or scapular head, but so loosely attached is the latter to 

 the remaining two heads of the triceps, that it almost 

 amounts to two muscles in this bird. 



The long or scapular head arises, somewhat tendinous, 



^ Agreeing with what I found in my dissections upon Corvus, 

 three years ago, Gadow has also declared that " Der Triceps 

 brachialis besteht bei den meisten Vcigeln aus di'ei in der Regel von 

 einander getrennt bleibenden Theilen, namlich eine P. scapuli- 

 cubitalis und 2 P. humero-cubitales (ext. et intern.) " [loc. cit., pp. 

 263, 264). He gives the following synonymy, to wit : — 



"81. M. TRICEPS CUBITI S. ANCONiEUS. 



Le grand extenseur du coude. Vicq d'Azyr, p. 571. 



Extenseur de Vavant bras. Cuvier. 



Ohne Namen. Merrem, p. 155, No. 1 und 2. 



Lange ausserer und innerer Ellenbogenmuskel. Wiedemann, pp. 



86-89. 

 Anconceus longus, Irevis et brevissimus. Tiedemann, §§ 264, 265 



266. 

 Der lange, kurze und kleinste Ellenbogenknorrenmuskel {An- 



conceus longus, brevis et quartus). Heu singer, p. 185, No. 



16, 17,18. 

 Strecker des Yordearmes. Meckel, p. 331, No. 9. 



Schupss, p. 190, No. 23. 

 Langer, kiirzerer, und kleinster Strecker. Prechtl, §§ 43, 44, 46. 

 Triceps extevisor cubiti et anconeus. Eeid, p. 142. 

 Triceps bracliii. Selenka, p. 126, No. 53. 

 De Man, No. 19. 

 „ ,, Forbes {Tubinares), p. 30 ; Carlsson, p. 21. 



Triceps extensor cubiti. Watson, p. 90. 

 La longue p)ortion du tricejjs brachial, le vaste externe et le vaste 



interne. Gervais et Alix, pp. 25 und 26. 

 Triceps brachial. Alix, p. 404. 

 Anconeus {sca2)ularis -\- coracoideAis). FxivhringeY, Morph.Jahrb., xi." 



