460 JOURNAL, BOMBAT NATURAL HISTORY SOCIETY, Vol. XIX. 



dorsal, irregular, darkish band in which is a still darker spot near the front 

 margin of each segment. L. 23mm. ; B. 3mm. 



Pupa. — This is of the type of that of Mycalesis but more angular. The 

 head is trapeze-shaped from above, the front margin sharp and straight. 

 Segment 2 moderately wide ; eyes slightly carinated on top. Shoulders abrupt- 

 ly broader than segment 2. Wings slightly expanded laterally, the lines being 

 nearly parallel but slightly curved inwards at centre. The front slope of head 

 and thorax is perpendicular to the longitudinal axis of pupa ; thorax humped 

 evenly, the dorsal line somewhat highly carinated. Constriction moderate 

 dorsally, laterally very slight. The pupa is broadest at the shoulders, slightly 

 narrower, at segment 6 — 7 after which the abdomen gradually diminishes in 

 diameter to the short, stout, square-ended, conical cremaster which is inclined 

 at a right angle or even more to the ventral line of pupa. Spiracles roundly 

 oval, dark, conspicuous. Surface of wings flat, the ventral line somewhat flat- 

 tended, straight from head to segment 9, after which it is curved. Segments 7 

 and 8 have a prominent, transverse wavy ridge dorsally along their hinder 

 margins reaching from wing to wing ; segments 9 and 10 have similar, similarly 

 situated, but shorter ridges. Body surface as well as that of wings finely rugose. 

 Colour yellowish-white, the ridges of abdomen and carination of thorax lined 

 dark-brown ; the whole smudged with dirty markings. Apex of thorax is the 

 highest point of pupa. L. 14mm. ; B. 4*5mm. 



Egg. — Is semi-ellipsoid in shape, slightly broadened out at base ; the surface 

 is covered with hexagonal cells with low, thin walls more or less obsoletely, the 

 centre showing these cells in longitudinal rows formed by longitudinal ridges 

 crossed by finer ones at right angles. Colour green-white, shiny, transparent 

 looking. H. 0'9mm. ; B. 0-8mm. 



Habits. — The egg is laid on the roots of dry bits of grass at the 

 foot of the plant or on the underside of a blade. The larva lives on 

 the underside of the blade or on the stalk and, when at rest, sits with 

 its head turned round on its side ; when disturbed, rolls itself up and 

 falls to the ground. Pupa is formed low down near the ground and 

 is fixed to the underside of a blade of grass or to a stalk or other 

 convenient object. It is firmly fixed but hangs free. The butterfly 

 is confined to South India, the Nilgiris and the Wynaad. Y. halduSy 

 F., is given as a species extending from the Himalayas to Bengal, 

 Central, Western and Southern India ; Assam to Tenasserim. It is 

 said to differ from Y. philomela in having the striae coarser on the 

 underside, chiefly. Y. indecora, Moore, is given as a race oi' philomela 

 from the N.-W. Himalayas ; it is said to differ in its larger size. 

 Our species has the habit of flying about in the mornings and after- 

 noons over grass in a weak, jerky fluttering manner, settling often 



