vi Mr. H. T. StaintorCs 



Sp. 4. SEMITESTACELLA, Curtis (fig. 4). 



Ederessa Semites tacella, Curtis, Brit. Ent. pi. 719. Steph. Illust. iv. 249. 



Ederessa semipurpurella, Curtis. 



Ederessa albistria, Wood's fig. 1297. 



Argyresthia spiniella, Zeller, Isis, 1839, S. 204, 3. Linn. Ent. ii. 254. 



Expansion of the wiugs 5 — 6£ lines. Head white, with a few yellowish hairs. 

 Face white. Palpi yellowish. Antennae white, annulated with black. Thorax white, 

 with the sides tawny. Abdomen fuscous. Legs whitish. Tarsi whitish, spotted with 

 black. Anterior wings tawny, with a purple tinge in certain lights ; the inner margin 

 white to near the anal angle, where it is interrupted by a deep tawny spot, which joins 

 the tawny portion of the wing, but is not visible across it as a fascia ; the breadth of 

 the white inner margin is about a third of the wiug ; on the costa, near the apex, are 

 three or four short darker streaks : cilia tawny gray. Posterior wings fuscous, with 

 paler cilia. 



This insect considerably resembles albistria, but its size is quite sufficient to dis- 

 tinguish it readily, it being fully half as large again as albistria. 



I have never met with this species myself: it has been taken by Mr. Weir at 

 Lewes, from beech ; and by Mr. Bedell at Mickleham, in July. 



There is some little room to doubt whether our species be the spiniella of Zeller: 

 he says that the colour of the anterior wings is much darker than in pruniella (ephip- 

 pella), whereas in our species it is very nearly the same. Further, he says, " the 

 ground colour of the small fagetella (albistria) is much paler: " now it is almost inva- 

 riably darker than in semitestacella. 



Sp. 5. albistria, Haicorth. 



Erminea albistria, Ha worth, Lep. Brit. 517, 18. 



Ederessa albistria, Steph. Illust. iv. 248. 



Ederessa semitestaeella, Wood's fig. 1301 (bad). 



Argyresthia fagetella, Zeller, Isis, 1839, S. 204, 2. Linn. Ent. ii. 25t>. 



(Ecophora fagetella, Duponchel, Sup. iv. 484, pi. 87, f. 11. 



Expansion of the wings 4 — 4^ lines. Head white, or yellowish (see var. b). 

 Face white. Palpi white. Antennae white, annulated with fuscous. Thorax white, 

 with the sides ochreous. Abdomen fuscous. Legs whitish. Tarsi whitish, spotted 

 with fuscous. Anterior wings ochreous, with more or less of a purple tinge ; the in- 

 ner margin narrowly white, interrupted rather beyond the middle by a darker ochreous 

 patch, which is not, however, continued across the wing as a fascia; on the costa are 

 a few dark spots, and near the apex two or three short white streaks, but these costal 

 markings are only visible in very few specimens : cilia fuscous or purplish. Posterior 

 wings grayish, with paler cilia. 



Var. b. has the head, face and palpi pale luteous, which colour also extends over 

 the white portion of the thorax and over the white portion of the inner margin. 



The plain concolorous appearance of this insect readily distinguishes it from all 



