NEW BRITISH TINEINA. 131 



Cambridge, some larvae new to me, feeding on the leaves of 

 Lathyrus palustris ; these iarvffi were evidently referable to 

 some species of Ge'echia, but at the time I had not the most 

 remote suspicion of the species they would produce. On the 

 25th May last, I heard from Mr. T. Brown that he had 

 bred specimens from these larvae, some of which he sent for 

 my opinion : on looking at these specimens, it was quite evi- 

 dent that it was the insect described in my volume of the 

 '' Insecta Britannica," under the name of Gelechia Nigri- 

 co.^tella : the larva I knew was quite distinct from the larva 

 of JSlgricosfella^ and there was, in the perfect insects, suf- 

 ficient difference to attract my attention. 



Mr. Brown very kindly offered to send me a supply of 

 pupae if I should like to breed the insect myself; this offer I 

 instantly accepted, and within a week I was setting out fresh 

 specimens of a Gelechia vvhich was very manifestly not Ni- 

 gricostella, though hitherto known in this country by that 

 name. At the July meeting of the Entomological Society 

 of London I exhibited specimens of this insect, and then pro- 

 posed for it the name of Gelechkt Lathgri. 



It is larger than Nig?'icostelIa, the expansion of the anterior 

 wings being 5-5| lines (that oi xslgricostella 4| lines); the 

 anterior wings are more pointed, and the cilia of the liind 

 margin yellow (grey in Nigricostella). Moreover, Laihyri 

 has no black spot on the fold beyond the middle. 



The larva is 4 lines long ; dark dull green ; head black ; 

 second segment black above, with its fiont edge whitish ; 

 anal segment and space between second and third segments 

 paler green ; spots very minute, dark grey in pale blotches. 

 An older larva was greener, not so grey ; but the head and 

 second segment were equally black. This larva makes a 

 white web along the stalk of Lafhgrus pali/stris, and gnaws 

 the stalk and adjoining leaves half througli. 



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