I'l' is difficult to frame characters that will perfectly embrace 

 all the varieties of form that this group exhibits ; nevertheless 

 it will be Ibund that unless it be very much divided, any alte- 

 rations will not only be imperfect but useless : for instance, if 

 the species figured were withdrawn on account of the form of 

 the wings, A. exclamatio7iis must be separated also for the more 

 important difference in the antennae; yet there is such a harmony 

 in the habits of this last and the type, that we do not think it 

 prudent at present to go beyond making divisions of them, in 

 the following order. 



A. Antennae pectinated in the males, I. nearly to the apex. 



1. A. nigra Haiv. — albicolon Fab.? 2. A. fusca Haw. 3. A. cinerea Hub., Nub. 



II. pectinated only half their length. 



4. A. sufFusa Hiib., Ocli., Haw. — spi- trata, monilea, cataenata and 



nifera VilL, Haw. — spinula pectina of ip;«rfo;)<. i?nV. may 



Don. 10. 345. 2 & 3. be varieties o( Segelum. 



5. JEqua Hiib. — margaritosa J/nw. 9. A. affinis. 



— majuscula Haw. var.F 10. clavigera Haw. — subfusca Haw. 



6. subterranea F., Haw. 171. 31. vnr.F 



7. monostigma A'tift. from Mr. Plas- 11. pupillata jf/ir«o. 



toad's collection. 12. sagittifera Hiib., Haw., Och,—- 



8. Segetum Hiib., Och. — Segetis J'. clavis Don. 10. 340. 3. 



06«.corticca,connexa,venosa, IS. Hibernica Hair. Mss. 

 spinula, nigricorn\ita, suba- 14. pascuea iVcii. Isle of Wight. 



B. Antennae of the males producing fascicles of hair only. 



15. A. cespitisi7i(6, Dartford Common. , 21. A. nigricans i., J"., i/atw. — fumosa 



16. autumnalis Nub. October. New F., Hub., Haw.? 



Forest. Chas. Lyell, Esq. 22. valligera F., Hub., Haw. 



17. exclamationis Li7m., Haio. 23. obelisca i^wfi. .^^ — obeliscata i/aja 



18. picea Haw. 220. 170. 24. albilinea Haw. — Tritici Linn. 



19. corticca Hiib., Och. — sordida Cab.? 



Hiib., Hatv. 25. lineolata Haw. 



20. ruris Hiib., F.? Haw. — dubia 26. radius Haw. 



Haw. var.? 27. radiolus Haze. Mss, 



28. subgothica Haw. 



For the beautiful specimen of the male figured, I have to 

 acknowledge my obligations to the Rev. C. S. Bird, who took 

 it the middle of June; it has also been taken in clover-fields 

 the beginning of the same month. 



We are not acquainted with the larvae of this genus, but 

 they are probably great enemies to the agriculturist and the 

 gardener ; for the caterpillars of A. segetum devour the roots of 

 corn ; those of A. valligera feed upon grass, keeping under 

 ground during the day ; A. exclamationis upon the groundsel ; 

 and Mr. Haworth is of opinion that some of them called Bots 

 by gardeners destroy the roots of lettuces and celery. 



The plant is Vicia sativa, var. angustifolia (Common Tare 

 or Vetch, with narrow leaves). 



