1895.] L. de Niceville & Dr. L. Martin — Butterflies of Sumatra. 481 



the foregoing species, but is much rarer than the two other Biduandas. 

 Found in the Battak mountains in January, April, July and December. 

 The male has a very conspicuous sexual mark on the upperside of the 

 fore wing. 



487. Marmessus moorei, Distant. 



Hagen. Staudinger. Distant. Snellen. One of the commonest 

 lycsenids of the forest of the plains and outer hills, and flies throughout 

 the year. Superficially very similar to Biduanda thesinia, Hewitson, 

 not only in coloration and form, but also in habits. Mr. Distant has 

 figured on pi. xliv, fig. 11 of Rhop. Malay, a very small female of this 

 species as a variety. Such dwarf forms in both sexes are not at all 

 rare in Sumatra. 



488. Marmessus boisduvaltt, Moore. 



Dr. Martin possesses a single pair which appertains to this species, 

 as they have a large discal orange patch on the upperside of the fore- 

 wing. They -were taken in the Battak mountains in February. 



489. *Marmessds ravindra, Horsfield. 



Hagen. Grose Smith. As this butterfly is found in Nms and 

 Java, it not improbably occurs in south-eastern Sumatra also. 



490. Eooxylides tharts, Hiibner. 



Grose Smith. Moderately common in the low forests at Selesseh 

 and Namoe Oekor, and occurs throughout the year. It is rarer than 

 ■B. thesmia, Hewitson, and If. moorei, Distant. 



491. Loxdra atymnds, Cramer. 

 Hagen. 



492. Loxura Cassiopeia, Distant. 



Hagen. Originally described from Perak in the Malay Peninsula. 

 Both the species of Loxura occur throughout the year at low elevations 

 not much higher than Naraoe Oekor in forest or its margins. They 

 have a short and jerky flight, and are weak on the wing, never flyino- 

 for long distances. 



493. Yasoda pita, Horsfield. 



Grose Smith. Hagen. Originally described from Java. 



