1873.] CERTAIN MUSCLES OF BIRDS. G33 



Species examined. 

 Upupa epops. 



The Musophagidce possess the ambiens, the femoro-caudal, and 

 the accessory femoro-caudal, the semitendinosus, the accessory semi- 

 tendinosus, and the postacetabular portion of the tensor fasciae. 



Species examined. 



Musophaga violacea. Corythaix albo-cristata. 



Schizorhis africana. 



The Cuculidce possess the ambiens, the femoro-caudal, the semiten- 

 dinosus and the accessory semitendinosus, and the postacetabular por- 

 tion of the tensor fasciae ; they may be divided into two subfamilies, 

 according to whether the accessory femoro-caudal is present or absent. 

 The accessory femoro-caudal is present in 



Centropus senegahnsis. Guira piririgua. 

 phasianus. Phcenicophaes, sp. 



The accessory femoro-caudal is absent in 



Cuculus canorus. Cacomantis sepulcralis. 



Chrysococcyx, sp. 



The Ramphastidce possess the femoro-caudal, the semitendinosus, 

 the accessory semitendinosus, and the postacetabular portion of the 

 tensor fasciae ; the ambiens and the accessory femoro-caudal are absent. 



Species examined. 

 Ramphastos carinatus. Ramphastos cuvieri. 

 ariel. 



The Capitonidce possess the femoro-caudal, the semitendinosus, the 

 accessory semitendinosus, and the postacetabular portion of the tensor 

 fasciae ; the ambiens and the accessory femoro-caudal are absent. 



Species examined. 

 Megalcema asiatica. Indicator major. 



Barbatula duchaillui. 



The Psittaci possess the femoro-caudal well developed, the semi- 

 tendinosus, and the accessory semitendinosus ; the accessory femoro- 

 caudal and postacetabular portion of the tensor fasciae are absent. 

 The ambiens may be present normally ; it may be differentiated in 

 the thigh, but fail to cross the knee, being lost on the fascia over it, 

 or it may be absent. 



The ambiens is present in the following species : — 



Psittacus erithacus. Ara macao. 



Conurus xantholamus. chloroptera. 



jendaya. Ca'ica melanocephala. 



petzi. Nestor notabilis. 



holochlorus. hypopolius. 



The ambiens is present, but does not cross the knee in 

 Stringops habroptilus. 



