10 Mr. R. Trimen on 
lying mainly between median nervure and inner-margin but en- 
croaching on discoidal cell at base, extending superiorly not much 
beyond origin of Ist median nervule, but inferiorly along inner- 
margin to beyond middle, where it ends abruptly and truncately ; 
in discoidal cell, at about its middle, a metallic-blue spot, variable 
in size and distinctness. Hindwing : a moderately-wide basal fuscous 
space, with a faint gloss of blue which extends over lower part of 
discoidal cell and along 1st median nervule ; inner-marginal fold 
dull pale-yellowish, densely clothed with grey hair, which becomes 
whitish just before anal angle ; on disc beyond middle on each side 
of radial nervule, a small yellowish fuscous-ringed spot, marked with 
some blue scales. Cilia white, with rather wide brownish interrup- 
tions at ends of nervules, UNDERSIDE.—<As in 9, but of a deeper 
more rufous tint throughout ; the spots better defined (especially the 
hindmarginal spots in the forewing), and those in the hindwing 
decidedly larger. Forewing : inner-marginal area dull-whitish, with 
a subnacreous gloss which is brighter near base. 
As pointed out (loc. cit.) in my remarks on the female 
type of this species, A. erzkssoni appears a much isolated 
member of the genus as far as colouring goes, though 
structurally belonging to the group of orcas, Drury, and 
hutchinsonii, Trim. The single example on which I 
founded the species was taken in 8. W. Africa (at Ehanda, 
in South Ambuella) by Mr. A. W. Eriksson in September, 
1887. The six males now described were captured by 
Mr. G. A. K. Marshall at Gadzima, Umfuli River, Mashuna- 
land, on the Ist, 6th, 17th, and 20th September, 1895. 
Four other examples of the male were taken previously on 
25th October, 1894, in the Mazoe district to the north of 
Salisbury, and two of them were sent to me by Mr. 
Marshall, but these were not in fit condition for descrip- 
tion. The Mazoe specimens are noted as flying with other 
Lyczenidze round “machabel” trees at the summit of a 
kopje. 
Genus IOLAUS. 
Tolaus alienus, sp. n. (Pl. I, fig. 6, f). 
d Exp. al.1 in. 4—6 lin. Glossy pale-hlue ; with a greyish-fuscous 
border, which is exceedingly broad in apical area of forewing. Fore- 
wing : blue from base occupying area between subcostal nervure and 
inner-margin, extending throughout discoidal cell (except at ex- 
