. The birds of South Africa. Birds. 12 PHALACEOCOBACIDJE PLOTUS a long tendon, attached anteriorly to the hsemapophysis of the eighth, ninth, and tenth vertebrae. The action of pulling the head back preparatory to striking is effected by the longus colli posterior, the actual striking movement by the longus colli anterior. Another peculiarity in the organisa- tion of Plotus concerns the stomach. In P. rufus, the South African species, the second or pyloric portion of the stomach is lined all round the opening into the duodenum by a thick coating. Pig. 3.—Anatomy of the neck of Flolus. 1—12 Cer
. The birds of South Africa. Birds. 12 PHALACEOCOBACIDJE PLOTUS a long tendon, attached anteriorly to the hsemapophysis of the eighth, ninth, and tenth vertebrae. The action of pulling the head back preparatory to striking is effected by the longus colli posterior, the actual striking movement by the longus colli anterior. Another peculiarity in the organisa- tion of Plotus concerns the stomach. In P. rufus, the South African species, the second or pyloric portion of the stomach is lined all round the opening into the duodenum by a thick coating. Pig. 3.—Anatomy of the neck of Flolus. 1—12 Cervical vertebrse numbered ; Tendon of the Longus colli anterior muscle ; Tendon of the Longus colli posterior muscle ; D. Donitz's bridge (after Garrod). of hairs, while extending from near the same opening into the lumen of the organ is a conical hair-covered process which evidently acts as a plug or valve to close the entrance into the intestine ; the details of the structure of the stomach are not the same in all the species of the genus. Four species of this remarkable type are generally recognised, spread over Africa, Madagascar, South Asia, the Malayan Islands, Austraha, New Zealand, and tropical and subtropical America. Only the one species, here described, is found in Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Stark, Arthur Cowell, d. 1899; Sclater, William Lutley, 1863-1944; Sclater, William Lutley, 1863-1944. Fauna of South Africa. London, R. H. Porter
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