306 Mr. H. T. Stainton's Synopsis 



spots beyond the middle, of which that on the costa is the pos- 

 terior. 



Female. — Expansion of the wings 3| lines. Head white ; an- 

 terior wings white at the base, except a grey blotch along the costa 

 with a straight white fascia before the middle, beyond the fascia 

 the ground colour is nearly black, with two opposite triangular 

 white spots, of which that on the costa is the posterior. 



The larva is pale yellowish-grey, with a pale brown head ; it 

 makes flat whitish mines in Holcus mollis and other grasses, in 

 March ? and July. 



The perfect insect appears in May and August ; it is common 

 in England, and occurs at Vienna. 



27. Elach'ista Humilis, Zeller. 



A dull looking insect but for the spots, which are whitish, and 

 the costal spot appears rather glossy ; it is intermediate between 

 Ohscurella and Arund'mella: from the former it is distinguished by 

 the greater distinctness of the spots, which are more exactly oppo- 

 site ; from Arundinella it may be separated by the anterior wings 

 being longer, and in Arundinella the costal spot is placed rather 

 nearer the apex. 



Male. — Expansion of the wings 4 lines. Head shining grey ; 

 anterior wings shining greyish fuscous, with a very indistinct paler 

 angulated fascia before the middle, beyond the middle are two 

 whitish opposite spots, that on the costa (hardly posterior to the 

 dorsal spot) is remarkably conspicuous and rather shining. 



Female unknown. 



Larva unknown. 



The perfect insect appears towards the end of May ; it has oc- 

 curred at West Wickham Wood, also at Glogau, and in Mecklen- 

 burg. 



28. Elac/iista Arundinella, Fischer. 



Very closely allied to the preceding, but the anterior wings a 

 little shorter, and the costal spot rather nearer the apex. 



Male. — Expansion of the wings 4 lines. Head shining grey ; 

 anterior wings rather dark grey, with a rather indistinct nearly 

 straight pale fascia before the middle, beyond the middle are two 

 whitish opposite spots, of which that on the costa is the whiter and 

 more posteriorly placed. 



Female unknown. 



Larva unknown. 



The perfect insect appears in August ; it occurs at Vienna. 



