﻿25. Ornithoptera Aruana, 2 , yellow scale. 



26. ,, ,, $ , steel-blue scale. 



27. Papilio Eurybates, $ , red scale. 



28. " ^ ?, „ 

 28a. „ black scale on the $ . 



29. O. Aruana, $ , black thoracic scale. 



30. Genus Pompeoptera, <? , basal hair scale, black. 



31. O. Aruana, $ , from the thorax, black. 



32. ,, ,, from the thorax, green. 



33. ,, „ Abdominal scale. 



34. Trogonoptera Brookeana, $ . 



35. Green scale from the thorax of O. Aruana $ . 



36. Scales from the Pupseform stigma of Aruana. 



37. Trogonoptera Brookeana <? , black twisted scale. 



• 38) 39> 4°- T. Brookeana, from the base of the thorax. 



41, 42, 43. O. Aruana <? , rufous scales from the undersurface of the abdominal margin. 



44. Androconia scale-hairs from the abdominal fold or pouch of the $ of P. Minos. 



These hair-scales have a diameter many times less than that of a spider's web. Indeed as the web of 

 some spiders is composed of a large number of silky threads, excerted at first in a fluid state through 

 a multitude of minute tubes situated on the lower surface of the spinnerets, which unite, before their 

 consolidation, to form a single thread, each strand being of extreme tenuity ; these Androconian 

 hair-scales may be considered as having a diameter only equal to a very small number of the strands 

 which, by their union, go to form the web of the spider. 



PLATE 59. 



1. Hair-scale from the thorax of the Genus Ornithoptera. 



2. P. Helena, 2 , brown elongate scale from the thorax. The majority of the forms differ little from this, 



but others are willow-leaf shape, and some with 2 or 3 dentations at the broad end. 

 4. P. Cerberus, ? , yellow scale. Striae duplicated and alternated with lines of dots. 



3. 5, 16. P. Helena, <? , black wing-scales. 



6. P. Cerberus, $ , yellow wing-scale. 



7. Genus Papilio, blue scale of <? anterior wing. This figure is only intended for comparison with the others. 



8. Black abdominal scale of Genus Pompeoptera. 



g. P. Cerberus 2 , black. Anterior wing, undersurface. 



10. O. Obiensis <? , green-blue scale, undersurface of anterior wing. 



11. P. Cerberus, ? , black scale of posterior wing. 



12 or 13. Genus Pompeoptera $ or 2 , black wing scale ; common to both sexes. 



14. Genus Pompeoptera, $ or 2 yellow wing scales ; common to both sexes. 



15. P. Minos, 2 , anterior wing, black scale. 



17. ^Etheoptera Victorise 2 , white scale. 



18. O. Obiensis, <? , blue scale from posterior wing. 



19. 20, 21. P. Helena $ , thoracic hair scales. The forms vary, and some are 2-dentate or 3-dentate at the 



the broad end. They are striated and black. 



22. Pompeoptera Darsius, $ and 2 , long white scale. 



23, 24, 28. Schoenbergia Titan, $ , blue, black or green forms : each with the same colours. 



25. P. Minos, <? or 2 , posterior wing, yellow scale. 



26. P. Darsius, yellow scale of $ or 2 posterior wing. 



27. P. Minos $ or 2 yellow scale from the abdomen. 



29. P. Minos, 2 , black scale from undersurface of anterior wing. 



30. ^Etheoptera Victorias, 2 , white scale. 



31. Genus Pompeoptera, light scale, from the abdominal margin of the 2 . 



32. O. Obiensis, violet scale from near the base of the anterior wing. 



