INTRODUCTION 



IX. 



allowing 



me access to their 



of the Durban Museum, for 

 collections. 



To Dr. P. L. Sclater I am indebted for much valuable 

 advice, for giving me free access to the library of the Zoolo- 

 gical Society of London, and in addition, to the labour he has 

 bestowed on the correction of my proofs. 



AKTHUK COWELL STAEK. 



DUBBAN, NATAL, 

 October 10, 1899. 



DIAGRAM OF A STABLING (Spreo bicolor ) : 



TO SHOW THE NOMENCLATURE OF THE PLUMAGE AND OTHER EXTERNAL PARTS. 



1. Maxilla or upper mandible. 



2. Mandible or lower mandible. 



3. Culmen or ridge. 



4. Gonys. 



5. Commissure or line of junction of 

 the maxilla and mandible. 



6. Gape. 



7. Nostril. 



8. Forehead. 



9. Lore. 



10. Crown or vertex. 



11. Nape. 



12. Ear-coverts. 



13. Cheeks. 



14. Chin. 



15. Throat. 



16. Side of neck. 



17. Back. 



18. Rump. 



19. Upper tail-coverts. 



20. Lower tail-coverts. 



21. Rectrices or tail feathers. 



22. Scapulars. 



23. Lesser wing-coverts. 



24. Middle wing-coverts. 



25. Greater wing-coverts. 



26. Primary coverts. 



27. Bastard- wing or thumb. 



28. Secondaries or cubitals (quills 

 springing from the forearm, from 

 6 to 30). 



29. Primaries (the outer 9 to 16 quills) 

 springing from the hand. 



30. Lower throat or fore-neck. 



31. Breast. 



32. Abdomen. 



33. Tibio-tarsal or ankle joint. 



34. Tarsus or tarso-metatarsus. 



35. Inner-toe or second toe. 



36. Hind-toe, first toe, or hallux. 



