YPOMOMEOTin.E. YPONOMEUTA. 243 



Coombe wood in June, and have had others that were captured near 

 Uirch wood : it appears to be a local species. 



Sp. 3. cognatella. Alis anticis niveis punctis viginti nigris, posticis argenteo- 

 cinereis, ciliis pallidioi-ibus. (Exp. Alar. 10 — 12 lin.) 



Ti. cognatella. Hithner, Ti. pi 58,/. 391, 392.— Er. cognatella. Steph. 

 Nonien. 2d edit. 



Head, thorax, cilia, and anterior wings snow-white, the latter with about 

 twenty remote black dots, placed irregularly in longitudinal rows, and 

 somewhat confluent towards the apex ; thorax with four spots; head imma- 

 culate ; posterior wings silvery-ash, with pale or whitish cilia. 



Found, not uncommonly, in the lane leading to Darenth wood 

 from the road, at the end of June and beginning of July ; also in 

 gardens near London : I have frequently taken it at the Hermitage 

 and at Ripley. I believe the larva feeds on the pear. 



Sp. 4. rorella. Alis aniicis niveis punctis subviginti nigris, postici' immunibusy 



posticis subplumbeis. (Exp. Alar. 9 — 10 lin.) 

 Ti. rorella. Hubncr?—Yp. rorella. Steph. Catal. ii. 208. No. 7272.— Ermine. 



Albin. pi. \xx.f. a — d. 

 Anterior wings snow-white, with about thirty minute black dots dis>posed 



longitudinally, the apex nearly immaculate: posterior wings lead-coloured, 



with ashy cilia : head and thorax snow-white, the former immaculate, the 



latter with four minute black dots. 



Less abundant than the last, of which it may be a variety: it occurs 

 in the same localities, and at the same time. 



Sp. .5. padella. Alis aniicis lividis out albidis punctis subtriginti nigris, posticis 

 plumheis. (Exp. Alar. 8 — 14 lin.) 



Ph. Ti. padella. Linnc.—Yp. padella. Steph. Catal. ii. 203. No. 7273.— Ti. 

 Evonymella. Donovan, v. i. pi. 9. 



Anterior wings livid or whitish, with about thirty remote minute black dots 

 disposed somewhat regularly in longitudinal rows, but on the hinder margin 

 they are more irregular, and tend to a transverse disposition ; cilia livid: 

 posterior wings lead-colour ; cilia rather paler. 



Extremely variable, some examples having the ground of the anterior wings 

 white, others with the costa livid and the inner margin white; some with a 

 livid or pale lead-coloured central cloud ; others, again, entirely of a pale 

 or deep lead-colour ; and all intermediate shades occur : the number of spots 

 also varies. 



Caterpillar dirty-ash, spotted with black, with a brownish head : it feeds on 

 various plants, especially the Whitethorn; sometimes devastating entire 



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