21. Its thorax is dark bluish black The scutum is dark bluish black except yellowish on the notopleuron. 22. The birds are waxy bluish black with a long graduated tail with white tips to the tail feathers. 23. The black beak and eyes contrast with the white head and the feet are bluish black in colouration. 24. The forewings are bluish black , with sparse lighter blue metallic scales intermixed, especially toward the apex. 25. The species included in this genus have a large bluish black body, bluish black wings and a yellow head. 26. The species included in this genus have a large bluish black body, bluish black wings and a yellow head. 27. The lower part of the nape of the neck, to the top of the back, is a bluish black . 28. Colouration is generally black or bluish black , with about 40 thin, white crossbars which may be indistinct or absent anteriorly. 29. In colour it is grey to bluish black , with dark lateral bands ( the right band usually running entirely above pneumostome ). 30. The forewings are bluish black , with the tips of the scales black, while the bases are ochreous and the middle part bluish.
