( 236 ) 



llii. Plerocymia albiclausa s|i. uov. 



Foretvinijs : with ground-colour whitish oclireons, more or less suffused, except 

 ill tlie margiual area, with pale red-browu ; basal jiatch eilired by a i)ale line angled 

 below costa, theu obliij^ne and waved ; a similar liue through tiic patch nearer base, 

 with a dark dot below the median ; inner edge of central fascia limited b_v a similar 

 line at one-third ; outer edge dark brown, oblique and straiglit, parallel to hind- 

 margin, at five-sixths ; the lascia itself dnll rod-brown, containing three or four 

 darker oblique lines and a small black cell-spot ; the fascia is followed by an oblique 

 white band, with a grey line along its middle ; marginal area beyond rufous fnscous, 

 the inner half forming a dark band edged by the obscure pale submarginal line ; 

 an oblique pale streak from the apex ; marginal line formed of pairs of black dots ; 

 fringe fnscous. 



Ilindicings : whitish, with a grey curved postmedian shade. 



Underside ochreous, dusted and suffused with fnscous ; the marginal area 

 paler ; cell-spots and outer line dark and distinct. Head, thorax, and abdomen 

 rufous ochreous. 



Expanse of wings : 26 mm. 



One c? from Natal (A. J. Spiller). 



11". Plerocymia nigrocellata sp. nov. (PI. V. fig. (j, c?). 



Forewings: uniform glossy grey ; marginal area darker, beyond a jiale sub- 

 marginal line curved parallel to hindmargin ; costal area slightly darker, brownish ; 

 cell-spot oblique^ velvety black ; fringe glossy grey. 



Hindwings : hardly paler, without markings of any kind. 



Underside slightly reddish-tinged : forewings as above ; hindwings slightly 

 speckled with blackish, with a minute black cell-dot and submarginal line denoted 

 by black dashes on veins. Head, thorax, and abdomen concolorous. 



Expanse of wings : c?, 32 mm. ; ? , 26 mm. 



One ? , four tS S, from Naudi, Uganda Protectorate, December 1896 (Dr. Ansorge). 



Polystroma gen. nov. 



Forewings: witli costa straight, curved at base and before apex : hindmargin 

 obliquely curved ; the snbmedian vein beneatli with a tuft of black hairs from base. 



Hindwings: with hinthnargiu rounded and sul)crenulate, slightly truncate 

 before the anal angle ; fold in cell clothed in last half with a bed of grey scales. 



Antennae of S subserrate, ciliated, as in Ochyria ; forehead with a cone of 

 scales ; palpi triangular, squamous, third joint obscured ; tongne and frenulum 

 present ; hindtibiae with four spurs. 



Neitralion : forewings, cell half the length of wing; discocellnlar nearly vertical; 

 first median at seven-eighths, second only just before lower angle of cell ; radials 

 normal ; 7, 8, stalked ; 10 anastomosing with 11, and again with 7, S, i), forming 

 a double areole ; 11 from near apex of areole, 7 from apex; 10 short-stalked. Hind- 

 wings with the snbcostals stalked ; discocellnlar oldique ; radial from its centre. 



Type : Polystroma subsjiissata sp. nov. 



Cidaria fuscigrisea Hmpsn. from India, and Lygris mardinata Stand, from 

 Mesojtotamia, are probably congeneric. The genus is akin to Melitulias Meyr. from 

 Australia. 



