8368 Insects. 



marginicolella, ? . Moreover all the specimens of N. fragariella ap- 

 peared in the warm room in January, whereas those of N. dulcella 

 do not appear till March, simultaneously with N. augulifasciella ; hence 

 I believe I must decidedly recognise in this a new species. 



16. N. CONTINUELLA, Stt. 



Capillis ferrugineis, antennarum conchula luteo-alba; alis anterior- 

 ibus violaceo-atris, basi obscure aeneis, vix nitidis, fascia post 

 medium recta, argentea, nitidissima, ciliis apice obscure griseis. 

 Exp. al. 2j — 2£lin. 



Slaintoti, Ann. 1856, 42 ; Man. ii. 437. Frey, Linn. Ent. xi. 436, 

 51. 



The frontal tuft is rusty yellow or ochreous-yellow ; the cervical 

 tuft paler; the eye-caps, which are larger in the male, white, inclining 

 rather to ochreous-yellow ; the abdomen and legs blackish ; the middle 

 tibiae and tarsi whitish. The anterior wings are dull olive-bronze at 

 the base, sometimes with a faint violet tinge on the costa, but very 

 slightly shining ; before and bej'ond the silver fascia they are black- 

 brown, inclining to purple-violet, not glossy; thereby is formed before 

 the fascia a more or less broad dark band, not sharply edged, but yet 

 rather distinctly defined. The silver fascia is just beyond the middle, 

 vertical, rather narrow and very glossy ; frequently it has a faint golden 

 tinge. Violet-black scales project at the base of the cilia, which at 

 the anal angle are more defined ; between them the cilia are fuscous, 

 with the tips purer and paler gray. The posterior wings and their 

 cilia are darker gray. 



A female bred along with N. continuella differs in some respects. 

 The anterior wings are narrower, of more uniform width, the fascia is 

 placed more posteriorly and is perceptibly broader; the basal half of 

 the wing is dull golden brown, with a violet tinge, only a little darker 

 towards the fascia ; the cilia have their bases darkened for a greater 

 extent; the middle tibiae are scarcely paler than the other legs ; the 

 antennae also seem to be longer, and the eye-caps of a darker yellowish. 

 Whether this indicates a new species will be seen hereafter. 



The larva is green, and feeds in birch leaves ; the mine is long and 

 narrow, tortuous, entirely filled up with dark green excrement. The 

 cocoon is oval, flat, of a yellowish brown or pale olive-green. 



In England and near Brunswick ; the larva at the end of September 

 and beginning of October. 



