438 SIR GEORGE F. HAMPSON ON [Mill". 1, 



Plecoptera thermozona, sp. n. (PI. XXXVII. fig. 34.) 

 Head, thorax, and abdomen pale grey mixed with bi-own. Fore 

 wing pale grey tinged with rufous and slightly irrorated with 

 black ; antemedial line rufous defined on inner side by yellow, 

 slightly angled outwards below costa, then erect and somewhat 

 sinuous ; two rufous discoidal points with a striga above them 

 from costa ; postmedial line dark brown with a narrow yellow band 

 on inner side, its inner edge defined by a faint sinuous brown 

 line, arising below costa, oblique, straight ; the postmedial area 

 chocolate-red with some white points on costa, its outer edge bent 

 outwards to apex, at middle, and to tornus and incurved at discal 

 fold and below vein 3, the slight grey subterminal line just before 

 the edge and somewhat dentate at veins 7, 6, 4, 3 ; a series of 

 black points just before termen. Hind wing pale grey-brown, the 

 terminal area darker ; the underside pale grey thickly irrorated 

 with brown, a slight discoidal lunule and curved postmedial line. 

 Bab. N.E. Rhodesia, N. Luangwa, Mt. Ulungu {Neave), 1 § , 

 E. Luangwa distr., Mterize R. {Neave), 1 J type. Exp. 34 mm. 



Plecoptera laniata, sp. n. (PI. XXXVII. fig. 35.) 



Antennae of male minutely serrate with long bristles and cilia ; 

 mid and hind tibiae fringed with long hair below ; the ventral 

 surface of abdomen with woolly hair on basal segment. 



Head and thorax grey mixed with red-brown ; abdomen grey 

 suffused with fuscous brown, the hair on ventral surface of male 

 ochreous white. Fore wing grey tinged with rufous and slightly 

 irrorated with black ; antemedial line red-brown defined on inner 

 side by yellow, straight, erect ; two brown discoidal points with 

 a slight angled mark above them on costa defined on outer side 

 by yellowish ; postmedial line red-brown defined on both sides 

 by yellowish and with slight blackish line beyond it arising just 

 below costa, oblique, slightly bent outwards to inner margin ; 

 some white points on postmedial part of costa ; subterminal line 

 blackish, angled outwards at veins 4, 3, then incurved and ending 

 at tornus ; a series of black points just before termen. Hind 

 wing grey-brown, the terminal area suffused with fuscous ; the 

 underside greyish suffused and irrorated with brown, a slight 

 discoidal lunule and diffused sinuous postmedial line, the terminal 

 area suffused with fuscous. 



Ab. 1. Head, thorax, abdomen, and fore wing pale ochreous 

 yellow, the last with the postmedial area tinged with brown ; 

 hind wing yellowish except the terminal area. 



Hob. X.E. Rhodesia, E. Luangwa distr. (Neave), 1 S • 1 2 

 type, Luangwa R. (Neave), 4 tf , 1 $ ; Transvaal, White R. 

 (Cooke), 1 <f . Exp. 34-40 mm. 



Plecoptera infuscata, sp. n. (PI. XXXVII. fig. 17.) 



Antennae of male minutely serrate with long bristles and cilia ; 

 mid femora from extremity and hind femora from base with tufts 

 of long' rufous hair. 



