ON NEW AND LITTLE-KNOWN BUTTERFLIES. 401 



with its wings folded over its back. Legs, hindleg, tibia with two 

 pairs of spines. Type, lc Hesperia " semamora, Moore. 



Capt. Watson in Proc. Zool. Soc. Lond., 1893, p. 123, places 

 J. semamora, Moore, and I. watsonii, de Niceville, doubtfully in the 

 genus Unkana, Distant, of which 77. batara, Distant ( = I. attina, 

 Hewitson,= G. cruda, Herrich-SchafFer) is the type. The type of Iton 

 differs from the type of Unkana in the following characters : — The 

 forewing is not so elongated, the apex is less acute, the outer margin 

 is convex instead of straight, it is also of the same length as the inner 

 margin, instead of being considerably longer ; the middle disco-cellular 

 is nearly twice as long as the lower, instead of being exactly the same 

 length ; there is a sexual tuft of hairs in the type species of Iton which 

 is lacking in Unkana ; in the hindwing the disco-cellular nervules are 

 much more outwardly oblique, instead of being nearly upright ; lastly, 

 the antennas are shorter with a much shorter crook, in Unkana 

 the antennas are more than half the length of the costa of the 

 forewing. Captain Watson has recently sunk the genus Unkana under 

 Erionota, Mabille. The genus Iton contains but two species, the 

 first with a tuft of hairs in the male, the second without. The 

 position of this tuft is, as far as I know, unique in the family, 

 except in the genus Eetion, de Niceville, in which there is a 

 similar tuft. 



(1) ITON SEMAMORA, Moore. 



Hesperia semamora, Moore, Proc. Zool. Soc. Lond., 1865, p. 791 ; Hesperia (?) semamora, 

 de Nice'ville, Journ. A. S.B., vol. 1, pt. 2, p. 60, n. 125 (1881) ; Parnara semamora, Watson, 

 Hesp. Ind., p. 46, n. 61 (1891) ; Unkana semamora, id., Proc. Zool. Soc. Lond., 1893, p. 123 ; 

 id., Swinhoe, Trans. Ent. Soc. Lond,, 1893, p. 328, n. 496 ; Hesperia barea, Hewitson, Trans. 

 Eat. Soc. Lond,, third series, vol. ii, p. 490, n. 12 (1866). 



Habitat : Bengal (Moore) ; Sikkim ; Khasi Hills ; throughout 

 Burma ; Perak ; N.-E. Sumatra ; North Borneo. 



As will be seen from the localities given above, the species has a 

 very wide range. I have specimens in my collection from Sikkim to 

 Sumatra and North Borneo. It is omitted from Mr. Elwes' Catalogue 

 of the Lepidoptera of Sikkim, and from Mr. Distant's Rhopalocera 

 Malayana. The description of 4 ' Hesperia " barea, Hewitson, from 

 Sumatra, agrees exactly with this species. 



