446 Rer. F. W. IIopk on some )}eiv Insects collected in Assam. 



colouring of my acquaintance : it is probably one of the genera of a family 

 peculiar to tlie East Indies. Little is known of the Oriental Lepldoptera, ex- 

 cepting those described in the Annulosa Javanica by Dr. Horsfield, so much 

 so that I hesitate in hazarding an opinion respecting them. It is almost im- 

 possible to describe the beautiful colouring of this lovely insect ; the dye of the 

 under wings is of a rich mazarine blue, which passes insensibly into violet and 

 black. In atRnity the genus is allied to Campi/lotes of Westwood, described in 

 Professor Royle's work on the Natural History of the Himalayan Mountains. 

 It is allied also to Gymnautocera of Guerin, and to Heleona and Anthomi/za of 

 the same author. It is doubtful if the insects composing this family are more 

 allied to the Zi/gœnidœ than the Lithosiadœ ; they appear to have been greatly 

 neglected, and it is tlie more remarkable, as tliey are certainly some of the 

 most beautiful of the Lej/idoptera. 



ZvG.ENiD^E. Stephens} 



Erasmia*. 



Antenme S bipectinatœ, pectinibus mediocribus. 



Alee anterlores oblongœ, subovaks, iutegrtv, nervis posticis paullo curvatis, 



cellulfi discoidali clausa. 

 Alœ posticce subrotundatic, nei vis posticis curvatis. 

 Corpus gracile, subcylindricum. 

 Caput parvum, palpis parvis. 

 Lingua spiralis et elongata. 

 Pedes graciles. 



Erasmia pulchella. 

 Tab. XXXI. fig. 5. 



Long. Corp. une. 1. Expan. alar. 3 une. & 2 lin. 



Argenteo-viridis ; alis anticis nigris, maculis viridi-cceruleo-argenteo ornatis, 

 fascia irregulari ante medium rufâ, maculisque majoribus albis pone me- 

 dium positis. ^7/«' posticœ straniineee, basi apiceque nigris, nervis viridi- 

 cœrulescentibus. 



• Erasmia, from the Greek f'pâo-jiuos, amabilis. 



