30 LEUCANIA STRAMINEA. 



there spins a slight and rather open-worked cocoon of 

 greyish silk, the upper surface flattened, within which 

 it changes to a pupa. The perfect insects appeared 

 between the 7th of July and the 9th of August. 



To give some notion of the extent to which this 

 species suffers from parasites, chiefly small ichneu- 

 mons, though sometimes dipterous, I may mention 

 that of twenty specimens sent me by Mr. Vaughan 

 not one had escaped being stung, and, from those he 

 retained for himself, he succeeded in rearing but one 

 moth. (W. B., 11, 71 ; E.M.M., VIII, 248, 1872.) 



Leucania pallens. 

 Plate LX, fig. 1. 



After many attempts to rear this species from eggs, 

 I have at length succeeded, much to my satisfaction. 



The moth is common enough, yet the larva is not 

 often found by collectors, even when specially search- 

 ing for grass-feeders, as I have had ample proof 

 through many seasons. Eggs, however, can readily 

 be obtained, and in previous years friends have sup- 

 plied me with them that duly hatched, but the young 

 larvae always died or escaped when a few days old. 

 When they leave the eggs they are exceedingly active 

 and restless, evincing no desire for food, but seem 

 bent on escaping from confinement; possibly the 

 proper species of grass not having been supplied, 

 previous broods having been placed on Triticum 

 reopens and Dactylis glomerata. 



I am indebted to Mr. D'Orville for a further supply 

 of eggs in September, 1865, which hatched during 

 their transit by post, and the young larvae were put on 

 a tuft of Air a csespitosa, and after a day or two of 

 incessant exercise they settled to their food, eating- 

 only the cuticle or green portions of the blades, leav- 

 ing transparent patches on the grass. 



They appeared to hybernate in December, but as 



