PHRYGANEID&. 
The meso- and meta-thorax on their upper surface are without 
dark marks, but have a pattern of minute white spots arranged in 
narrow lines (figure 9) ; the arrangement and extent of this pat- 
acer 
NEURONIA POSTICA. 
9. Larva. Head and thorax. 15. Pupa. Chitinous plates of left 
10. Larva. Distribution of gills. side of abdomen. 
11. Pupa. Labrum, 16. Larva. Labrum. 
12. Larva. Frons. 17. Pupa. Caudal end of abdomen. 
13. Pupa. Mandible. Ventral side. 
14. Larva. Mandibles, under side. 18. Case of larva. 
ern is subject to some variation; the ventral surface is without 
marks. The epimeron is brown, with a narrow black mark in the 
form of an inverted T. 
25 
