62 ENTOMOLOGICAL NEWS [Feb., 711 
Fig.-3. Small fragment of surface of left caudal tracheal gill, 
larva No. 3, showing two scales and four articular pits for others. 
210. 
Fig. 4. Scale from same gill as fig. 3. XX 2I0. 
Fig. 5. Scale from first antennal joint shown in fig. 10. XX 210. 
Fig. 6. First left tibia and tarsus of larva No. 4. X 8&5. 
Fig. 7. End view, hind end of abdomen of larva No. 2 9, caudal 
gills removed. X 8&5. 
Fig. 8. Dorsal view, hind end of abdomen of larva No. 2 9, caudal 
gills removed. X 8.5. 
Fig. 9. Left caudal gill, ventro-mesial view, combined from draw- 
ings from larvae Nos. I, 2, 3, to show tracheation. The dotted line in- 
dicates the boundary between a central, clearer, unscaled area and an 
opaque, scaled margin. X 5.8. 
Fig. to. Right antenna, dorsal view, larva No. 3, 6. XX 16.5. 
Fig. 11. Scale from tibia or tarsus of fig. 6. X 210. 
Fig. 12. Ventral surface of distal end of tarsus. X 8&5. 
Fig. 13. Dorsal view of branches of left anterior gastric trachea 
shown in fig. 17. X about 12.5. 
Fig. 14. Right lateral view of metathorax and abdomen of larva 
Moma 24) KIS 
Fig. 15. Ventral view of same. X 5.5. 
Fig. 16. Left mandible, mesial surface, larva No. 2, 9. X 21. The 
dotted line shows the line of flexure of the internal branch. 
Fig. 17. Left side of stomach to show tracheation, larva No. 3,24. 
X about 12.5. 
Fig. 18. Ninth abdominal segment to show gonapophyses, larva 
INON 3e"6. NaS )5: 
Fig. 19. Left latero-dorsal view of intestine to show tracheal sup- 
ply, larva No. 3, 4; Malpighian tubules omitted. X about 12.5. 
Fig. 20. Right gill of fifth abdominal segment, larva No. 3, @. 
The gill has been left untouched, the viscera of the segment removed 
with the exception of the tracheae supplying the gill. To the left of 
chr a portion of the chitinous ventral wall of the segment is shown, to 
the right of chr is a portion of the tergite which has been turned out- 
ward (laterad) to show the structures within the segment. The por- 
tions of the two main tracheal trunks rdt and rlt have been turned 
outward to give a clearer view of the branches to the gill. Compare 
with the fifth abdominal segment in fig. 22. XX about 23. 
Fig. 21. Dorsal view of head, larva No. 4, 2. The dotted lines 
show the outlines of pale marks. X 7.8. 
Fig. 22. Dorsal view of chief thoracic and abdominal viscera, 
larva No. 3, 6. The body has been opened along the mid-dorsal line. 
The ganglion has been omitted from second abdominal segment, the 
