OCR Text |
Show 1892.] CLASSIFICATION OF BIRDS. 247 3. Glareolidce. Afro-Indo- Australian. Schizorhinal (except Pluvianus). No basipterygoid processes. (Glareola, Pluvianus, Cursorius, Dromas.) 4. Thinocoridce (incl. Attagis). Neotropical. Schizo- inclining to holorhinal. N o basipterygoid processes. With a globular crop. (Unique among Chara-driiformes.) Phytophagous. 5. QZdicnemidce. Cosmopolitan. Holorhinal. No basipterygoid processes. 16 cervical vertebrae. N o hallux. 6. Parridce. t Tropical. Schizorhinal. With basipterygoid processes. Hallux long. 16 cervical vertebrae. II. GAVINS. Downs of young more complex, approaching typical downs. Front toes webbed. Aquatic. Zoophagous. Supraorbital glands always large. Schizorhinal. Hypotarsus with two grooves. 1. Alcidoe. Sternum with two notches. Coracoids separate. N o ectepicondylar process. Procoracoid process small. Periarctic. 2. Laridce. Sternum with four notches. Coracoids touching each other. With ectepicondylar process. Procoracoid process large. Cosmopolitan. 17. COLUMBIFORMES. Cosmopolitan. Phytophagous. Adult downs scarce and restricted to the apteria. N o lateral cervical apteria. 11 remiges. Aftershaft rudimentary or absent. Oil-gland nude or absent. Aquinto-cubital. |