ILLUSTRATIONS 



(Plate I; Plate IV, figs. 3 and 4; and Plate V, figs. 5 and 6, are from photographs by 

 Boynton. Plates II, III, and VI; Plate IV, figs. 1 and 2; and Plate V, figs. 1 to 4, are 

 from photographs by Cortes ; Plate VII is from a colored drawing by Dimayuga. ) 



Plate I 



Fig. 1. Tabanus striatus Fabricus depositing eggs on a flat surface. X 1.4. 



2. A group of egg masses attached to bits of wood. X 1.9. 



3. A mass of eggs photographed during the process of hatching. 



A few white bodies are seen emerging through the eggshells. 

 The tracks made by escaping larvae can be traced. X 5. 



4. A mass of empty eggshells. X 6.6. 



Plate II 



Fig. 1. A group of Tabanus larvse one hour after hatching. X 7.9. 



2. An individual larva one day old. X 30. 



3. The head capsule of a developed larva, showing the great hooks, 



stomal disk, and pharyngeal apophyses. X 15.3. 



4. Full-grown larvae. X 1.2. 



Plate III 



Fig. 1. The exuvium of the initial molt. X 8.5. 



2. The molted skin of the second ecdysis. The shed head capsule is at 



one end and the cuticle of the anal siphon opposite. X 8. 



3. The shed skin of the final process of molting, x 8. 



Plate IV 



Fig. 1. The last segment of the male puparium, showing the terminal 

 teeth. X 12.4. 



2. The same of the female, x 13.3. 



3. The puparium just prior to the act of emergence. X 2.2. 



4. The fly emerging from its puparium. x 2.7. 



Plate V 



Fig. 1. Head of the male fly. x 6.3. 



2. Head of the female fly. x 6.3. 



3. Mouth structures of the male. X 12. 



4. Mouth structures of the female. X 10.5. 



5. Male fly with wings spread, showing body markings. X 2. 



6. Female fly with wings spread. X 2. 



Plate VI 



Fig. 1. A group of male and female Tabanus on a branch of the rain 

 tree, feeding on the gummy excrescence. X 0.48. 



2. Female flies infesting a native pony, showing their characteristic 



position and attitude of feeding. 



3. Flies on the abdomen of a work bullock. 



Plate VII 



Figs. 1-2. Tabanus striatus Fabricus in resting position. X 1.5. 

 3-4. Male and female flies with wings spread. X 2.4. 



117494 5 221 



