affecting the Clover-crops and Pasture-lands. 81 



the words of the Mantuan bard, who delighted to sing of rural 

 pursuits : — 



" For, overlaboured with so long a course, 

 'Tis time to set at ease the smoking horse." * 



Explanation of Plate W. 



Fig. 1. Ahead oi Trifolium pratense {])ViX])\Q clover), divided to show five of 

 the calyces eaten out by the maggots of Apion apricavs. The 

 orifices are indicated by bro'mi spots. 



2. A calyx detached, showing the hole eaten by the maggot. 



3. The larva, or maggot, of Apion apricans, 



4. The same magnified. 



5. The^»<^)a, or nymph, of ditto. 



6. The same magnified. 



7. Apiion apricans or flavifemoratum. 



8. The same magnified. 



9. The mandible or jaw oi Apion frumentarium, Linn. 



10. The maxilla and palpus, or feeler, of ditto. 



11. The chin, or mentum, and lip, &c., of ditto. 



12. Vicia sutiva (the vetch, or tare), infested by Apion Pomona;. 



I. The larvce, or maggots, in situ. 



13. A pod of the vetch opened, exhibiting the perforated seeds. 



14. The larva of Apion pomonce (?) 



15. The same magnified. 



16. Apion pomonoj. 



y 17. The same flying and magnified. 



18. Head of the male. 



19. Head of the female. 



20. The horn, or antenna. 



21. A leg. 



22. A calyx of Vicia sepium (?) which contained several larva: of some 



species of Apion. 



23. One of the larvce, removed from the calyx. 



24. The same magnified. 



25. C]irysom.ela (^FJuedon) polygoni. 



26. The same magnified. 



27. The labrum, or upper lip. 



28. One of the mandibles, or jaws. 



29. One of the maxilla;, with the palpus, or feeler. 



30. The labium, or under lip, with the two palpi, or feelers. 



31. The antenna, or horn. 



32. One of the legs. 



Ohs. — All the figures are drawn from nature. 

 [The copyright of this paper is reserved to the author.] 



Belitha Villas, Barnsbury Pari:, May, 1857. 



" Sed DOS iramensum spatiis confecimus sequor : 

 Et jam tempus eq<ium fumantia solvere colla." 



Virg. Georg. ii. 541-2. 



VOL. XVIII. 



