ORTHORRHAPHA 



NEMATOCERA 



Simuliidae 





Fig. 4. Ova, Simulium cinereum Ltr. 



Fig. 5. Pupa, Simulium. 



Fig. 6. Larva, Simulium. 



Fig. 7. Habitat, Simulium. (N. D. F. P.) 



Figs. 4, 5, 6, 7. Simulium cinereum Ltr. Larva 4-5 mm., Pupa 4^5 mm., Ova, area, 4 mm. Habitat in the 

 Bourn Brook, Grantchester. Sand flies are abundant in damp and sandy and marshy places, and attack 

 man and animals as mosquitoes do. (See Typical Flies, fig. n.) 



