IIYPONOMEUTA. 59 



impossibility now to discovci- n:h\ch species he intended hi/ the 

 name of Evoiij/me/la ; and Scopoli liaviiig correctly dcscribeil, 

 under that name, the larva and imago of one species, I have had 

 no hesitation in adopting his name, as the earliest name to which 

 no doubt is attached. Almost every succeeding writer has fol- 

 lowed the bad example of Liiuueus, without attempting to prove 

 the correctness of his assertions. 



Of this genus we have six liritish species (two others are known 

 on the continent) which may be easily distinguished as follows: — 



n. Auterior wings leaden-grcy. 



d. With a black spot in the cilia of the hinder margin. Species 1. 



tj b. With no black spot in the cilia of the hinder margin. Species 4 

 (some varieties). 

 a a. Anterior wings white. 



c. With dark blotches or clouds. Species 2, 3, 4 (some varieties). 



c c. AVith no dark blotches or clouds. Species .5, (!. 



1. vigintipunctatus, lletz. U. et S. 52. 153 (1783); Zell. Tsis, ^ kT. ^ 

 1844. — SedeJla, Trcit. ; Dup. ; Step. Zool. 1844. p. 087; Sta. Zool. ^"-^ I 

 1848. p. 2272. Alis antieis sat/ny/te p/n))/deo-r/rl'ieis,SQriehus tribus lon- 

 gitudinalihus punctorum nigroruin, ciliis dilute griseis, macula infra 



apicciii saturate ftisca. Exp. al. 7 lin. 



Head and face dark grey. l'al[)i pale grey. Antcnn;c greyish-fus- 

 cous. Anterior wings rather dnrii leaden-yrei/, with three longitudinal 

 rows of black spots ; the tirst near the costa terminating rather beyond 

 the middle, the other two on each side of the fold not reaching to the 

 liindcr margin; cilia ]iale grey, witli some darli fuscous scales inime- 

 diatehj below the apex. Posterior wings groyish-fuscous, with })aler 

 cilia. 



Almost unifpie in this country; one specimen taken by ^\v. 

 Stephens at Norwood. The perfect insect is double-brooded, ap- 

 pearing in April and l\ray, and again in August. The larva ap- 

 pears in June and July, ami again in September and October; it 

 feeds on the Scdiun, Tetejthiinn. 



2. plumbellus, W. V. 13*). 31. (1770); Fab.; Iliib. ; Godart ; 

 Treit.; Step.; Dup.; Zell.; Frey. N. B. v. pi. 420. — plumbea. Haw. 

 Alis antieis alhis, grisesccnte-sun'usis, apice saturate fusco, seriebus qua- 

 tuor longitudinalibus punctorum nigrorum, pnnctulis nigris marginem 

 posticuni versus, macula nlyra in medio plica; ; eiliis saturate fuscis, an- 

 gulum analcm versus albidis. T^xp. al. 8.\-9 lin. 



Head, face, and palpi whitish. Antenujc dark fuscous. Anterior 

 wings wliite, with a slight greyish tint, with four longitudinal rows of 

 black spots, two near tlic costa and one on each side of the fold ; near 

 the hinder margin is a transverse row of small l)lark spots, preceded 

 by a few black sj)ots irregularly placed ; in tlte middle of tlie fold is a 



