PLATE IX. 



Family XXV. SYRPHID^. 



Genus 1. Ceria* Fig. 1 a, head of Cerlu conopsoides, seen sideways ; 



I b, extremity of wing of ditto. 



Genus 3. Callicera. Fig. 2. CalUcera anea. 3 a, antenna. 



Genus 3. Microdon. Fig. 3 a, antenna of Ilicrodon ajn/ormls ; 



3 b, wing of ditto. 



Genus 4. Sumerus. Fig. 4 a, head of Eumerus str'ujatus, sideways ; 



4 b, wing of ditto. 



Genus 5. ^ristalis. Fig. 5 a, head of Eristalis tenax, male, from 

 above ; 5 b, head of female, sideways ; 5 c, wing of ditto. 



Genus 6. Helophilus. Fig. 6 a, head of Hdopldhis pendalns, 

 male, from above ; 6 b, ditto, sideways ; 6 c, extremity of Aving. 



Genus 7. Merodon. Fig. 7 a, head of Merodon clavipes, side- 

 ways ; 7 b, hind leg of male of ditto. 



Genus 8. Tropidia. Fig. 8 a, head of Tropidia milesiformis, male; 

 8 b, extremity of wing of ditto. 



Genus 9. Syritta. Fig. 9. Syritta pipiens, male. 9 a, liead, side- 

 ways. 



Genus 10. ^ylota. Fig. 10 a, head of Xylota si/lvarum., male; 

 10 3, antenna; 10c, extremity of wing; 10 <?, base of hind leg, 

 showing small spine on the coxa. 



Genus 11. Milesia. Fig. 11 a, head of Milesia speciosa, sideways ; 



II ^, extremity of wing ; 11 c, base of hind leg. 



Genus 13. Criorhina. Fig. 13. CriorJdua oxyacantlice. 12 «, head, 

 sideways. 



Genus 13. Volucella. Fig. 13 a, head of Volmella bombylans, 

 sideways; 13 b, antenna; 13 c, extremity of wing. 



Genus 14. Sericomyia. Fig. 14. Sericomyia borealis. 14 a, head 

 of ditto, sideways ; 14 b, claw joint of tarsus. 



Genus 30. Orthoneura. Fig. 15. Orlhoneura nob'dis. 



J. 0. W. 



