PLATE IX. 



FAMILY XXV. SYRPHID^B. 



GENUS 1. Ceria. Fig. 1 a, head of Ceria conopsoides, seen sideways ; 



I by extremity of wing of ditto. 



GENUS 2. Callicera. Fig. 2. Callicera cenea. 2 a, antenna. 



GENUS 3. Microdon. Fig. 3 a, antenna of Microdon apiformis ; 



3 b, wing of ditto. 



GENUS 4. Eumems. Fig. 4 a, head of Eumerus strigatus, sideways ; 



4 by wing of ditto. 



GENUS 5. Eris tails. Fig. 5 , 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 HelopJdlus pendulus, 

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



GENUS 7. Merodon. Fig. 7 a, head of Merodon clavipeSy side- 

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



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

 8 b y extremity of wing of ditto. 



GENUS 9. Syritta. Fig. 9. Syritta pipienSy male. 9 a, head, side- 

 ways. 



GENUS 10. Xylota. Fig. 10 , head of Xylota sylvarum, male ; 

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

 showing small spine on the coxa. 



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



II by extremity of wing ;!!<?, base of hind leg. 



GENUS 12. Criorhina. Fig. 12. CriorUna oxyacantha. 12 a, head, 

 sideways. 



GENUS 13. Volucella. Fig. 13 a, head of Folucella bombylans, 

 sideways; 13 b t 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 20. Orthoneura. Fig. 15. Orthoneura nobilis. 



J. O. W. 



