74 L. de Nic^ville — On new and little-known Uhopalocera. [Nos. 2—4, 



much broken bands of white-bordered dusky spots, and submarginal and 

 marginal lunules as in the forewing ; two small black spots at the anal angle 

 on the margin. Gilia dusky throughout. Female. \J L'p er&ide, for eivin^ 

 black, the disc whitish and covered with pale blue metallic scales, the disco- 

 cellulars marked with a black spot. Hindwing dusky, with pale bluish-white 

 streaks between the nervules, a black disco-cellular spot, and obscure margi- 

 nal pale lunules. TJkderside cream-coloured, the markings as in the male, 

 but all the spots and bands (except the two black anal spots) pale ochreous. 



Two male specimens were taken in the Sikkim Tarai in July and 

 August. 1881, by Mr. Otto MoUer, and four males from Bhurkhul and one 

 from Demagiri in the Chittagong District were taken by Mr. H. M. Parish 

 in February, 1883. All these specimens are very constant, showing no 

 variation whatever. They present a superficial resemblance to N. ardates^ 

 Moore, but are a different colour on the upperside ; they have also no 

 tail, and should therefore probably be placed in a different genus. Mr. 

 Otto Moller has also obtained numerous males at low elevations in Sikkim 

 during tlie summer and autumn including the female described, Mr. Irvine 

 has sent it from the Malda District, the Museum collector took it at 

 Buxa, and I took it in the Great Runjit valley, Sikkim, in October. 



13. Castalitjs iNTEKiirPTUS, n. sp. (Plate I, fig. 12, $ .) 

 C. interruptus, Moore, M. S. 



Hab. Khurda, Orissa ; Bholahat, Malda ; Sikkim. 



Expanse : 115 to 1*20 inches. 



Desceiption. Male and Female. Upperside, both wings pure 

 white. Forewing with the base thickly irrorated with black scales, beyond 

 with a dense black patch widest on the costa, inwardly recurved below the 

 submedian nervure, from whence it suddenly narrows. (In some specimens 

 the irrorated black scales at the base of the wing and the blaick patch 

 beyond are entirely merged into one black basal patch, and the costa through- 

 out is widely black.) The apex widely, the outer margin as far as the first 

 median nervule less widely, then to the inner margin more widely again deep 

 black; with a round black spot above the first median nervule coalescing 

 with the black border, this spot is sometimes entirely separated, in other 

 specimens very indistinct, and lastly in others its form is entirely lost in the 

 black margin. Hindwing with the immediate base and a few irrorated spots 

 beyond black, the outer margin also black, enclosing immediately within a, 

 black anteciliary fine line a more or less prominent and complete series 

 of white oblong marks between the nervules. Ui^dEeside with the 

 markings arranged as in G. hamutus, Moore, but smaller and more 

 restricted, especially on the hindwing. Cilia on both sides on both wings 

 white, marked with a black spot at the tip of each nervule j tail black with 



