BVTTERFLIES FROM THE CHIN HILLS. 647 



llie sub-apical ocellus on the forewing more prominent. Underside, 

 •the discal fascia of the foreioing more prominent than in the male, and 

 faint traces of a similar fascia on the hindwing, otherwise as in the 

 male. 



Dry-season Form. 



Description : Male and Female. Upperside, forewing, ocellus 

 less conspicuous than in the rainy-season form, but always present and 

 fairly prominent. Underside, both zvingsj discal fascia rather promi- 

 nent and also faint traces of a marginal and submaro-inal fascia. 

 Hindioingj ocelli minute, but with conspicuous silver pupils. 



Described from five males and four females of the rainy-season form 

 taken at Myingyan at the end of November and beginning of Decem- 

 ber, and from very numerous specimens of both sexes of the dry-season 

 form taken from the end of December to March. The rainy* season 

 specimens do not represent the extreme of that form, and would not 

 have been taken so late in the year if it had not rained on the 28tli 

 and 30th November, exceptionally late dates for Myingyan. The last 

 specimen of the rainy-season form was taken on the 10th December, 

 and the first of the dry-season form on the 28th of the same month. 



This is a well-defined local race of Y. avanta, Moore, from a treeless 

 district, the typical race being confined, in Burma at all events, to 

 heavy jungle ; the present race differs in its smaller size, in the con- 

 stant presence of the ocellus on the upperside of the forewing, in the 

 white tone and less prominent fasciaa on the underside, and in the 

 almost entire absence of androconia on the forewing of the male. 

 In typical Y. avanta the ocellus on the upperside of the forewing is, 

 especially in the males, ill-defined or entirely absent ; the fasciae on 

 the underside are conspicuous, and the male-mark is almost more 

 prominent than in any other species of the genus. In some ways 

 Y. cerealis seems to bear the same relation to Y. avanta^ that Y. pliilo- 

 mela ( = tabella) does to Y. haldus. 



The distribution of the present species seems very restricted even in 

 the localities where it occurs, and it was only found within certain 

 limited areas. It occurred especially abundantly among low bushes on 

 the bunds of some paddy fields a few miles out of Myingyan. 



The types of both seasonal forms are in the collection of Mr. de 

 Niceville. 



