476 On new Lepidoptera from Siam and Africa. 



Hub. Toiingoo, Burmali (type) ; Shan States ; Tenasseritn 

 Valley; Peiak; {2,^(^,6 ? ? in Tring Museum). 



{T/i. aliris intermedia, Crowley, has wider oblique light 

 bands on the fore wing in the ? , and very conspicuous 

 cellular androconial tufts in the c? ; it occurs in Toungoo, 

 Bur mail, alongside of Th. lathy i amplifascia.) 



Heterocera. 



Lymantriidae. 



Ogoa oherthueri, Rothsch., sp. n. 



S . This is undoubtedly a giant, as the largest species 

 described up to now only expands 72 mm. 



Antennse heavily pectinated, shaft black-biown, pectina- 

 tions deep black ; head, thorax, and first two segments of 

 abdomen dirty cream-white, rest of abdomen cinnamon- buff. 



Fore and hind wings, above and below, semi vitreous 

 buffish cinnamon, outer half feebly powdered with sooty 

 scales ; on fore wing an angled median band and on hind 

 wing a postmedian convex band of more densely placed 

 sooty scales, some 4 millimetres wide. 



Length of fore wing 62*5 mm., expanse 135 mm. 



Hab. Grande Comore (named in honour of Mr. Charles 

 Obei'thiir, who did so much for the exploration of the 

 Comoro Islands). 



Ogoa neavei, sp. n. 



cJ . Legs black ; antennse deep black ; head and thorax 

 deep orange ; abdomen black, three basal and the anal seg.uent 

 orange. 



Fore wing dark smoky grey ; median and outer quarter of 

 costal area orange, iutranervular spaces in basal two-fifths 

 suffused with orange, in the outer three-fifths the iutra- 

 nervular spaces are only somewhat washed with orange, 

 more strongly towards termen ; an oval, ill-defined, dull 

 orange patch below median vein between veins 2 and 3. 

 Hind wings orange, a sooty-black patch on upper discocellular 

 veinlet, vein in cell sooty black, a submarginal sooty-black 

 sinuate band beyond which the nervures to termen are also 

 black, and the interspaces sprinkled with black scales. 



Several other ^ ^ show a second oval patch between 

 veins 3 and 4. ? similar, but paler and duller. 



Length of fore wing 44 mm., expanse 95 mm. 



Hab. Mt. Mlanje, Nyassaland, Dec. 1913 {A. S. Neave 

 coll.; Brit. Mus.). 



