1872. Coues, N. Amer. Birds, 178. The syringeal muscles are two pairs at most.
1883. Martin & Moale, Vertebr. Dissect., 141. Cut the trachea across just in front of the attachment of the syringeal muscles.
1872. Coues, N. Amer. Birds, 178. The syringeal muscles are two pairs at most.
1883. Martin & Moale, Vertebr. Dissect., 141. Cut the trachea across just in front of the attachment of the syringeal muscles.