]98 MESSES. H. J. ELWES AND JAMES EDWAEDS : 



Pamphila vitrea, Murray, Ent. Mo. Mag. xi. p. 171 (1875). 

 Pamphila lamprospilus, Pryer, Rhop. Nihon. p. 33, pi. x. fig-. (1889). 



Hah. Japan (Pryer, Leech) ; Changyang, C. China (Pratt). 



Idmon. 

 Idmon, de Niceville, Jour. Bomb. Nat. Hist. Soc. 1895, p. 375. Type " unicolor," de Nicev. (nee Dist.) 



This is a genus made by Mr. de Niceville for a species from Perak, of which the 

 female, according to him, agrees very closely with Distant's figure of Baoris unicolor. 

 The latter is an entirely brown insect with an expanse of about 30 mm., and, as we have 

 satisfied ourselves by an examination of the type kindly lent to us by Dr. Staudinger, is a 

 true Parnara, and a male, not a female as supposed by Mr. de Niceville. In the genus 

 Idmon, according to his description, " the middle and lower discocellulars of the fore 

 wing are very upright, slightly inwardly oblique only, both slightly concave, the middle 

 a very little longer than the lower, the second median nervule arises close to the 

 lower end of the cell, and the first median arises a little nearer to the base of the wing 

 than to the lower end of the cell." There is on the fore wing of the male a sex-mark, 

 which is described by him first as " a sexual brand placed anterior to, but against the 

 submedian nervure towards its base, this brand is narrow and raised," and afterwards as 

 " a narrow raised brand of modified scales lying alongside a portion of the submedian 

 nervure towards its base on the upperside of the fore wing." 



The hind tibia has " a tuft of hairs attached to its proximal and two pairs of spines 

 on its distal end." This latter character is not found in any species of Hesperiida? 

 known to us; and as Mr. de Niceville says that the female of his Idmon differs from the 

 male only in the wings being broader and lacking the sexual brand on the fore wing, 

 it would appear that there are two pairs of spines on the distal end of the hind tibia in 

 both sexes. 



Mr. de Niceville gives as the type of this genus an insect which he was unable 

 to identify correctly without seeing, and his generic diagnosis relates to the species 

 mentioned below, which we have never seen, and not to Baoris unicolor, Dist. 



Idmon unicolor. 



Idmon unicolor, de Niceville, Jour. Bomb. Nat. Hist. Soc. 1895, p. 377, pi. Q. fig. 53, 6 . 

 Hab. Perak (fide de Niceville). 



Arnetta. 

 Arnetta, Watson, P. Z. S. 1893, p. 81. Type atkinsoni, Moore. 



Watson includes in this genus Isoteinon atkinsoni, Moore, and /. vindhiana, Moore ; 

 the former has vein 5 in the fore wing straight and very little nearer to vein 4 than to 



