THE MUSCLES OF THE UPPER EXTREMITY. 119 



For nearly its entire length the deltoid is intimately 

 attached to the triceps by fascia, more especially to its 

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

 the former which passes round the shoulder-joint. 



71. The triceps 1 muscle in the Raven 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, 



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

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

 brachialis besteht bei den meisten Vogeln aus drei in der Regel von 

 einander getrennt bleibendeii Theilen, nacalich 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. ANCON^US. 



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



Extensetir de favant bras. Cuvier. 



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



Lange ausserer und innerer Elleiibogenmuskel. Wiedemann, pp. 



86-89. 

 Anconceus lonyus, brevis et brevissimus. Tiedemann, 264, 265 



266. 

 Der lange, kurze und kleinste Ellenbogenknorrenmuskel (An- 



conceus longus, brevis et quartus). Heusinger, p. 185, No. 



16, 17,18. 

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



Schopss, p. 190, No. 23. 



Langer, kiirzerer, und kleinster Strecker. Prechtl, 43, 44, 45. 

 Triceps extensor cubiti et anconeus. Reid, p. 142. 

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



De Man, No. 19. 



Forbes (Tubinarcs), p. 30 ; (Jarlsson, p. 21. 



Triceps extensor cubiti. Watson, p. 90. 

 La longue portion du triceps brachial, le vaste externe et le vaste 



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

 Triceps brachial. Alix, p. 404. 

 Anconeus (scapularis + r.nracoiiJ cti s) . Fiirbringer, Morj.'h. Jaltrb., xi." 



