MUSCULAR SYSTEM 



607 



witli the m. propatag. longus. Frequently one or more sesamoid 

 bones are intercalated Avith these tendons, Avhich shew the most 

 complicated arrangement in the Tubinares. 



Garrod devoted nmch labour to the elucidation of these patagial 

 muscles, regarding them as of taxonomic value. An obvious and 



^'g-- S- 



Fig. 6. 



Muscles of Left Arm. Lateral View. (After Fiirbringer.) 



Fig. \.-Anas; 2, Coliimha; 3, Phcenicophsees ; 4, Upupa; 5, Menura; 6, Cyanocorax. 



D, m. deltoides major ; D.pt. deltoid portion of m. propatagialis ; L.d. m. latissiinus dorsi 



(portion); Pt.h. and Pt.l. mm. propatagiali.s brevis and m. longus ; T, m. triceps. 



(Tlie m. biceps with its slip to tlie m. propatagialis is black.) 



constant character is the presence or absence of a slip from the m. 

 biceps to the tendon of the m. propatag. longus, and its value may- 

 be judged from the following lists : — 



Present — Gallinai (excl. Cracldai), Cohimbx, Limicolx, Laridee, Al- 

 cidx, BalUdai, Grues, Tubinares, Colymhidx, Podicipedidse, Phalacrocorax, 

 Plotus, Sida, Anseres, Phainicopterus, Platalea, Caprimulgidai, Colius. 



Absent — Ratitsi, Tinamidm, Twrnices, Cracidx, Otis, Cariama, 

 Spheniscidm, Phaethon, Fregata, Pelicanus, Palamedea, Herodii, Pelargi, 

 Accipitres, Psittaci, Striges, Picarisn (excl. Caprimulgidai), Steatornis, 

 Pici, Passeres. 



31. metapatagialis, formed by slijDs from the on. serratus super- 

 Jicialis and ni. latissimus dorsi, and with the addition of the 

 m. expansor secundariorum extending by its tendons the posterior 

 patagium or fold of skin between the trunk and the inner surface 

 of the upper arm. The scrm^^ts-portion comes from the ribs and is 



