New Geometridae (Lepidoptera) in the South African Museum. 51 



parallel with aiid much nearer to the termen (2 mm. distant at apex, 

 3 mm. in middle). The discal dots are larger than in most inoffensa 

 and that of the hindwing rather better developed ; but this character 

 varies in inoffensa. 



Cape, Bushmanland, 1896 (Gr. Alston). 



SUB-FAM. LARBNTIINAE. 

 GEN. ORTHOLITHA Hiibu. 



6. ORTHOLITHA PERINGTTEYI, sp. nov. 



$ 9 32 mm. Head and thorax dirty white, mottled with brown 

 and fuscous ; palpus with little white except on the first joint. 

 Antenna! pectinations 3-4 times as long as diameter of shaft. Abdo- 

 men grey-brown, more variegated beneath than above. 



Wings glossy. Forewing white, the ground-colour almost entirely 

 obscured by irroration and mottlings of fuscous and light brown, 

 chiefly remaining as fine edgings to the basal and median areas, inter- 

 rupted traces of other transverse lines and some spots and vein-streaks 

 in median area ; middle of costa sometimes noticeably pale ; a narrow 

 brown band about 2 mm. from base, strongly excurved ; the white 

 lines which bound the median area double, their remoter elements 

 more interrupted ; median area with a narrow brown band at each 

 side, the proximal from about one-third costa to beyond one-third hind- 

 margin, forming an outward angle in the middle and here marked 

 with blackish on the bifurcation of M and M 2 , the distal from beyond 

 two-thirds costa to about two-thirds hindmargin, forming a small 

 outward curve near costa and a rather strong lobe at R, 3 , then retracted 

 to M 2 , thence perpendicular or slightly oblique outward to hind- 

 margin ; subterminal line formed of white interneural dots ; a very 

 short oblique dark mark from apex ; termen with pairs of elongate 

 black dots, sometimes more or less connected by a fine interrupted 

 line ; fringe chequered. Hindwing light brown-grey, with a pale 

 double postmedian line, which is angled outwai'd behind R 3 , incurved 

 posteriorly and directed towaixls tornus at hindmargin ; traces of 

 interrupted whitish subterminal line, clearer and whiter at tornus ; 

 fringe weakly chequered. Forewing beneath brown-grey, with small 

 dai-k discal dot and pale double postmedian line ; between this and the 

 subterminal rather browner; subterminal and terminal lines and 

 fringe nearly as above. Hindwing beneath sharply marked ; whitish 

 with fuscous irroration, small dark discal dot, darkened veins distally 



