of the Genus Elachhta. 323 



72. Elachista Muhligiella, Frey. 



Closely allied to the preceding but darker, the anterior wings 

 hardly so broad and more roughly scaled. 



Expansion of the wings 5 lines. Head greyish brown ; an- 

 terior wings blackish brown, rather roughly scaled ; cilia of the 

 same colour, with a pale brownish line at their origin. 



Larva unknown. 



The perfect insect appears in August ; it has occurred near 

 Zurich. 



Note. — The three following descriptions appear in the " Bidrag till Finland's 

 Fjiiril fauna" of Tengslrom ; I have been unable to reconcile them with any 

 known species. 



Tristielella, Nylander manuscript. " Ftisca cinerascenti obsoletius conspersa, 

 maculis alarum anticarum Iribus parvis albidis, prima pauliulum ante medium 

 discoidali, poslerioribus pone medium oppositis. Longit. alae ant. 4 miilim. 



'' Secundum lilieras Celeberrimi Zeller nova, Nigrelt(e at^inis. Caput antice 

 squamis cinerascentibiis obsitum ; palpi fusci supta albidi. Alae ut in diagnosi 

 dictum fundo coloratae vel, si mavis, cinerascenies creberiime fusco-squ^mosae, 

 macula discoidalis insequalis transversa, indeterniinata tertiam partem latitudinis 

 alaB occupans, maculae anteapicales sublriangulares baud oninino oppositae, nam 

 externa (stigmaticalis) pauxillum posterius est sita ; fimbriae squamulis fuscis 

 immixtae. Pedes tibiarum apicibus et tarsis annulis articulorum apicalibus 

 albis." 



Bislictella, n. sp. Fusca, capite metallico subnitente abdomine subtus et fas- 

 ciculo anali (apparatum genitalem maris luteum circumdante) cinerascenti-mi- 

 canlibus,fasciaque alarum aulicarum ante apicem interruptaalbida valdeindiscreta, 

 puncta duo opposita saepissime foiniante ; tarsi pedum aibido-annulati. Long, 

 alae ant. 3f miilim. 



Species nova teste Cel, Zeller, Nigrellce quoque affinis, Praecedente valde 

 simiiis, at paullo minor, colore fusco alaium aniicarura ob squamas albidas sub- 

 tililer immixtas magis in cinereum vergente, punctis tantum duobus oppositis 

 albidis (vel interdum fascia subinterrupta), fimbriisque subunicoloribus obscure 

 cinereis ab ilia dignota. 



Salicis, D. sp. Alae anticae albidas squamis fuscis crebre inspersae, fascia quasi 

 in medio et maculis duabus obsoletis oblique oppositis albidis tantum relictis, 

 fimbriis sordide albidis serie punctorum fuscorum ad marginem posticam oraatis; 

 caput, palpique alba. Longit. alae ant. 4 miilim. 



Ad praecedentera proxime accedit, ab ilia colore laetiori albido stalim dignota. 



