462 L. de Niceville & Dr. L. Martin — Butterflies of Sumatra. [No. 3, 



376. Castalius roxus, Godart. 



Hagen as roxus, Godai'dt [sic]. Sfcaudinger. 



377. Castalius elna, Hewitsoa. 



Widely distributed, found in North-Eastern and Southern India, 

 Burma, the Andaman Isles, the Malay Peninsula, and Java. G. rosimon, 

 Fabricius, G. ethion, Doubleday and Hewitson, G. roxus, Godart, and 

 C. elna occur in the plains and outer hills south of Bekantschan and 

 Bohorok. G. rosimon, G. roxus, and G. elna are found on roads and grassy 

 places such as forest tracts overgrown with high grass, and settle with 

 folded wings on the ground if moist, or on the tops of flowering 

 Graminese. C. ethion keeps more to low shrubs, and is found inside the 

 forest. G. ananda, de Niceville, is only found in the forest on certain 

 bushes in February and March. Dr. Martin took it, also in March and 

 April, at Singla below Darjiling in the Western Himalayas only on 

 certain trees, but I have caught the male in the same place on the wet 

 sand in the beds of streams. The female of G. ethion, which has no 

 blue coloration on the upperside of both wings, is so far quite similar 

 to the male of C. roxus, our most common species, but the markings of 

 the underside will instantly distinguish them. G. elna, the largest of our 

 Castalius, is decidedly rarer than C. rosimon, C. ethion, and G. roxus; 

 C. ananda is the rarest of all, and found only at the higher elevations. 



378. Polyommatus bceticus, Linnaeus. 



Snellen. Hagen. Distant as bxticus [sic]. This widely-spread 

 butterfly occurs in Sumatra near the sea, as Dr. Martin has taken it at 

 the Saentis Estate and at Loboe Dalam on the flowers of the common 

 kidney bean (Phaseolus vulgaris, Linnaeus), and also very high in the 

 mountains at Soengei Batoe and on the Central Plateau, but it is never 

 found in the intermediate area. Dr. Martin is quite unable to account 

 for this fact, which has also been observed by Dr. Hagen, who has 

 taken P. boeticus near Laboean on abandoned Indigo plants, and 

 believes that the butterfly was imported to this very low elevation 

 from Singapore when the Malays first introduced the Indigo plant from 

 thence. 



379. *Cupido .etherialis, var. 



Hagen. I am unable to trace this species. 



380. *L.TCENA AUGUSTA. 



Grose Smith. I have failed to discover this species also. 



