194 ON CERTAIN MUSCLES OF BIRDS. 
The Bucerotide possess the femoro-caudal, the semitendinosus, and 
the accessory semitendinosus; the ambiens, the accessory femoro-caudal, 
and the tensor fascis are absent. 
Outer view of right thigh of Buceros coronatus, dissected. 
b, biceps; s#, semitendinosus; ast, accessory semitendinosus; sm, semimembra- 
nosus; fc, femoro-caudal; ae, obturator externus; @, adductors; gl, 1, 11, 
and III, glutei; s, sartorius; s#, sciatic nerve; sa, sciatic artery; p, pubis. 
Species examined. 
Buceros rhinoceros. Buceros coronatus. 
plicatus. atratus. 
——- bicornis. Toccus melanoleucus. 
The Upupide possess the femoro-caudal, the semitendinosus, and 
the accessory semitendinosus ; the ambiens, the accessory femoro-caudal, 
and the postacetabular portion of the tensor fascise are absent. 
Page 633. Species examined. 
Upupa epops. 
The Musophagide possess the ambiens, the femoro-caudal, and the 
accessory femoro-caudal, the semitendinosus, the accessory semiten- 
dinosus, and the postacetabular portion of the tensor fascie. 
. 
