2G4 



H AUSTELL AT A. — LEI'IDOPTERA. 



This genus (which requires further subdivision) contains the most 

 minute of the Lepidopterous insects ; the species of which it is 

 composed may be generally recognised by having the anterior wings 

 of very dark — sometimes jet black — colours, with a transverse pale 

 continuous fascia, pale or silvery, near the base, and an interrupted 

 one towards the apex ; the cilia are moderate, and the posterior wings 

 are frequently also dark, with longish cilia. The larvae feed, as in 

 Argyromyges, within the surface of leaves, on the parenchyma. 



Sp. 1. subbistrigella. Alis ant ids nigris strigis duabus niveis, posticis nigri- 

 cantihus, ciliisfuscis. (Exp. Alar. 55 lin.) 



Ti. subbistrigella. Eaivorih. — Mi. subbistrigella. Steph. Catal. ii. 207. 



No. 7329. 

 Anterior wings black or dusky, with a linear fascia before the middle, and 



another, almost interrupted, behind the middle, both snow-white or silvery: 



posterior wings dusky-black, with fuscous cilia. 

 The fascijB on the anterior wings are sometimes slightly lutescent, and the 



posterior one is occasionally quite continuous, and a little curved : the 



general tint of the wings is also at times less intense. 



Very rare : taken in the beginning of June at Darenth wood, and 

 I believe it has also occurred at Coombe wood. 



Sp. 2. obsoletella. Alis anticis nigris striga ohsoletissima medio punctoque costali 



cinereo-albidis. (Exp. Alar. 5^ lin.) 

 Mi. obsoletella. Steph. Catal. ii. 207. No. 7330. 

 Anterior wings black, with a very obscure transverse ashy-white streak in the 



middle, and a faint spot, slightly tinted with yellowish, towards the apex of 



the costa: posterior wings and cilia dusky-black. 



Also very rare : taken in June 1827 at Ripley. 



Sp. 3. exiguella ? Alis anticis nigris, fascil medio, punctisque duobus posticis 



cinerascentibus, capite atro. (Exp. Alar. 3| — 4§ lin.) 

 Ti. exiguella. Fabricius.— Ml exiguella. Steph. Catal. ii. 207. No. 7331. — 



Chionodes, Hiibner. 

 Wings black; anterior Avith an ashy fascia in the middle, extending from the 



costa to the inner margin ; near the apex of the costa is an ashy spot, and 



opposite to it on the anal angle is a smaller one : head black. 

 Rather variable in size, and in the intensity of the spot at the apex of the 



costa, which is sometimes rather large and conspicuoiis. 



"More abundant than either of the two preceding species : found at 

 Coombe and Darenth woods, at the end of May and beginning of 

 June. 



