318 SHOULDER-GIRDLE IN MOXOTREMES, 



MiVART says, under teres minor "this muscle appears to be 

 wanting in the Echidna, unless it is represented by the muscle 

 which I have described as the second part of the deltoid." Later 

 on, however, he describes, without naming, "a small delicate 

 muscle closely connected with the outer surface of the capsular 

 ligament, arising from the external surface of the scapula, just 

 anterior to the lowest part of the origin of the scapular head of 

 the triceps.'' 



Ornitkorhynchus. 



Oaven does not mention the teres minoi-, nor does he describe 

 or mention the small muscle under discussion. 



CoUES says, under the head of " subscapularis," " this is what 

 would be for most animals the usual position of the infraspinatus, 

 and might be taken for the latter, were it not for its widely 

 distant insertion into the other side of the head of the humerus." 

 He then goes on to describe the muscle as "a small subterete 

 fascicle arising fleshy from that part of the scapula which lies 

 between the glenoid and head of the triceps." 



Leche, following Coues, describes this muscle under the head of 

 subscapularis. " Bel Ornithorhynchus ist er kieiner und entspringt 

 von dem, zwischen Cavitas glenoidalis und Triceps-Ursprung 

 gelegenen Theil der Scapula"; but he does not mention this 

 muscle under the heading of M. subscapularis accessorius, where 

 he describes the corresponding muscle of the Echidna. 

 Meckel does not appear to describe this muscle at all. 

 CuviER and Laurillard do not figure it in any of their Plates. 

 Remarks. With the exception of Fewkes (5) no observer 

 has regarded this muscle as a teies minor ; and as we have not 

 been able to see Fewkes' paper, we are unable to say on what 

 grounds he bases his opinion. Westling adopts the name M. sub- 

 scapularis accessorius, and refers to Testut. The conclusions 

 drawn by the latter author on the origin of this muscle in animals 

 does not, however, give support to Westling's homology, inasmuch 

 as Testut says that the M. subscapularis accessorius arises 

 between the M. teres major and the long head of the triceps. 



