NEW AND LITTLE-KNOWN BUTTERFLIES. 213 



a largo black spot crowned with a tine white line on the anal lobe, a 

 smaller similar spot crowned with a fine orange line in the first median 

 interspace, the .space between these two spots sprinkled with black 

 and white scales; a very fine anteciliary black line; cilia grey; tail 

 black, tipped with while. Female unknown. 



R. scintilla in the male may at once be distinguished from 

 R. schistacea, Moore, by the absence of the blue gloss on the forewing 

 on the upperside ; from R. orseis, Hewitson, it may be known by the 

 presence of the blue gloss on the hindwing. R. scintilla therefore 

 appears to occupy a position exactly intermediate between these two 

 species. The greenish-grey shade of the underside is also distinctive. 



Described from six examples in Mr. A. V. Knyvett's collection and 

 my own. 



Family HESPERIID.E. 



15. ISOTEINON IAPIS, n. sp., PI. E, Fig. 9, <$ . 



Habitat : Burma, Malay Peninsula. 



Expanse : 6 , 1 '5 inches. 



Description : Male, Upperside, both icings dark shining brown, 

 becoming of a deeper shade towards the outer margins, Forewing with 

 the following semi-transparent lustrous yellowish spots: — two towards 

 the end of the discoidal cell, the upper one a round dot, the lower 

 larger, elongated, comma-shaped ; a pair of conjoined subapical dots 

 divided by the terminal portion of the subcostal nervure (which in 

 the Hesperiidce appears always to end on the outer margin some little 

 distance below the apex), the lower a little the larger ; three discal 

 spots placed obliquely, the upper one in the lower discoidal inter- 

 space a mere dot, equal in size to the lower subapical dot, the middle 

 spot in the upper median interspace about four times as large, its 

 outer edge concave, its inner convex, the lowest spot about four times 

 as large as and shaped like the spot above, placed in the first median 

 interspace. Hindwing unmarked, but the abdominal margin and espe- 

 cially the anal angle fringed with very long hairs. Underside, both 

 wings much paler than above, sprinkled throughout thickly with dull 

 ochreous scales. Forewing with the inner margin broadly pale yellow, 

 a tuft of long black hairs attached to the margin. Hindwing with a 

 discoidal and four or five discal small very obscure dark spots, which 



