250 J. Wood- Mason — Description of Parantirrhoea Marshalli. 



P. marshalli, n. sp. 



<?. Wings above dark fuscous suffused with rich deep violet. 



Anterior wings with an outwardly and forwardly arched subcrescentic 

 pale violet or mauve band commencing beyond the middle of the wings 

 at the costal vein, terminating at the inner angle, and crossed obliquely by 

 a series of three small white spots disposed in a straight line parallel to the 

 outer margin and placed upon folds of as many consecutive cells, the last 

 being between the two anterior median veinlets. 



Posterior wings relatively longer-tailed than in Melanitis ismene 

 (Cramer) with the membranous parts of the divergent tails almost wholly 

 formed by the produced wing-membrane of the interspace between the 

 second and third median veinlets, a very narrow anterior membranous 

 edging only being contributed by the interspace next in front ; and with 

 rather more than the basal two-thirds of their length in front of the dis- 

 coidal and subcostal veins ochreous. 



Wings below ochreous obscurely striated with a deeper shade of the 

 same colour, and marked with a submarginal series of incouspicaous brown 

 specks, the probable rudiments of ocelli. 



Length of anterior wing 1-16; whence expanse = 2'4 inches. 



The female will, in all probability, prove to differ from the male not 

 only in the absence of the sexual spot in the posterior wings, but also in 

 having the inner margin of the anterior wings straight and neither lobed 

 at the base nor turned up in the middle, and the first median veinlet and 

 the submedian vein of the same wings normally arranged and develop'-^ 

 and directed respectively to the outer margin and to the inner angle after 

 the manner usual amongst butterflies. 



Hab. Trevandrum, Travancore, South India. Described from four 

 specimens of the male, one, the type, recently purchased by the Indian 

 Museum, and three belonging to Captain G. F. L. Marshall, R. E., to 

 whom I am indebted not only for the opportunity of describing this inter- 

 esting insect, but also for permission to dissect one of the specimens in his 

 collection. 



P. S. — The species of the genus JElymnias alone present the same 

 disposition of the three anterior veins of the posterior wings. 



8 MAY 1885 



