GALLI L>91 



The deltoid may or may not possess a special tendinous 

 slip from the scapula. This slip is absent in Mitua tomentosd , 

 Excalfactoria chinensis, and Gallipepla, but present in 

 Ortalis albiventris, Crax Sclateri, C. Daubentoni, Crosso- 

 ptilon mantchurictim. It is evidently, therefore, not of great 

 use in classifying the group. 



The biceps slip is generally present, but absent in 

 Ortalis albiventris, Crax, Mitua ; it is present in Megapodius 

 and Megacephalon ; ' absent in Talegalla, Numida, and 

 Meleagris. The same remark may, therefore, be made about 

 this muscle. The humeral head of the anconceus is not 

 always present. 



The tensor patagii brevis of gallinaceous birds has a 

 thin, wide, diffused tendon, as in the tinamous ; there is no 

 patagial fan. 



The entepicondylo-ulnaris is another muscle which they 

 share with the last-mentipned group. 



The expansor secundariorum is a muscle which appears 

 to be invariably present among the Galli, but to have vary- 

 ing relations at its scapular insertion. 



'In the majority of the gallinaceous birds,' wrote Pro- 

 fessor Garbod, ' the expansor secundariorum, with the normal 

 origin from the secondary quills, has a different method of 

 insertion, which has led M. A. Milnb-Edwards to describe 

 the muscle in the common fowl as a part of the coraco- 

 brachialis (brevis) in his superb work on fossil birds. 



' In the genera Tetrao, Francolinus, Rollulus, Phasianus, 

 Euplocamus, Gallus, Ceriornis, and Pavo, the muscle, instead 

 of being inserted into the scapulo-sternal fibrous band, above 

 referred to, after blending to a certain extent with the axillary 

 margin of the teres, ceases by becoming fixed to a fibrous 

 intersection about one-third down the coraco-brachialis 

 brevis muscle. 



' In Francolinus Clappertoni from among the francolins, 

 Coturnix, Odontophorus, Ortyx, Eupsychortyx, and Numida, 

 the tendon^does not go so far as the short coraco-brachialis, 

 but ends either by simply joining the axillary margin of the 



' Absent, according to Fdbbhinoek. 



c 2 



