ISODEMA. I29 



sucking the sap of trees, exuding from the burrows formed by 

 the larvae of large Moths belonging to the families Zeuzcridcc 

 and Hepialidce. 



Herona marathus, of Doubleday and Hewitson, is another 

 North Indian species of this group, with the hind-margins 

 dentated, and a slight concavity in the middle of each. It is 

 brown, with a tawny band running from the base of the fore- 

 wings below the cell, and three, partly macular, bands from the 

 costa. The hind-wings have two broad tawny bands, converging 

 at the ends, running from the inner-margin, and a sub-marginal 

 tawny line towards the anal angle. Most of the Butterflies of 

 this group resemble those of other dominant genera, and 

 H. marathus is very like some species of Athyma, Westw., or 

 Abrota, Moore, genera belonging to the Limenitis group, as 

 regards, colour and pattern. 



Among the largest of the North Indian species allied to 

 Diadema is Penthema lisarda (Doubleday), which measures 

 between five and six inches across the wings. It is black, 

 with broad buff radiating stripes between the nervures on the 

 disc, and with large sub-marginal spots beyond. In the cell 

 of the fore- wings are two or three long spots and stripes; the 

 hind-wings having broad buff stripes at the base in and below 

 the cell. On the under surface the wings are strongly tinged 

 with rust-colour, except on the disc of the fore-wings. The 

 hind-wings are dentated, and rather long. 



Another curious species is the Chinese Isodema adehna 

 (Felder). It is of a dull black ; on the fore-wings a row of large 

 white spots runs from near the base to the hinder angle; 

 another short row from the costa, just before the middle ; and 

 there are two rows of small sub-marginal spots. On the hind- 

 wings is a single row of white sub-marginal spots, diminishing in 

 size from the tip to the anal angle. The wings expand about 

 three and a half inches, the fore-wings are short and broad, 



