CLELEA; PIAROSOMA; THYRASSIA. By Dr. K. Jordan. 17 



I. ulmivora Graes. (3h). Antenna of cf long pectinated, of S shortly pectinated. Wings grey-black, ulmivora. 

 transparent, without markings; veins, margins and fringes black; 4. and 5. subcostals of forewing not stalked. 

 — Larva velvet)- black, with 2 broad, bright yellow, dorsal, transverse bands; head glossy black; on Ulmus 

 campestris, in autumn. Pupa hibernating, brown-yellow; cocoon hard, white, fastened on a rolled-in leaf. 

 Imago in May. 



22. Genus: Clelea Walk. 



Palpus short, scarcely reaching beyond edge of frons. Hindtibia with two or one pair of spurs, 

 there being species in which the median pair is sometimes absent, sometimes present. — Indo - Malaj'an ; 

 China. The iwojse-species belong perhaps to this genus. 



C. cyanicornis I'ouj. (3h). Body with strong metallic gloss. Antennae white before apex. Fore- cyanicomis. 

 wing black, with 5 white dots : 'ii in a submedian row, 2 beyond apex of cell diverging distally. Hindwing 

 all black or with white dot. — Central and West-China, in June. 



C. albomacula Leech (3h). Like ri/aniconus, but hindwing white with broad black margin. — West albomacula. 

 China, only 1 specimen known. 



C. sapphirina Walk. {— stipata Alph.) (3h). Black, body green or blue. On forewing blue spots, sapphirina. 

 namely a streak at base, a transverse band before middle, an interrupted ellipse before apex with a spot 

 behind it, and a thin marginal Hne. — South, Central and West China; North India. 



C. fusca Leech (3h). Antenna and head purple blue, pronotum golden. Forewing yellowish brown, fusca. 

 very slightly metallic. — Japan; I-chang on the Yang-tse-kiang (the same?). 



C. syfanicum Oherlh. (3h). Large. Forewing with broad red costal streak which curves backwards syfanicum. 

 distally. Hindwing red, distal and posterior margins black. Reminding one of Retina costata. — Tong-ho 

 and Moupin, in West China, April and May. 



C. melaleuca spfc. nor. (3i). ?; head, thorax and antenna brown-black; abdomen and wings white, melaleuca. 

 Forewing with some black dots in proximal third; a little more than distal half brown-black, with grey 

 veins and, at apex of cell, a white spot; 1. subcostal proximal to two -thirds of cell. Hindwing white, 

 with black marginal band which tapers behind, not reaching anal angle. — Ta-tsien-lu. 



23. Genus: Piarosoina Hamps. 



Similar to Fhaciisa. The two median veins very close together in both wings, 1. radial of hindwing 

 present. — Two species are known, one from China, the other from Burma. 



P. hyalina. Collar and the bases of the abdominal segments white. Forewing black, with 2 hyaline 

 patches, each consisting of several spots separated by the veins. Hindwing vitreous, with black distal margin, 

 which is widened tooth-like behind middle. Two forms. — In true hyalina Leech (3i) from Kiukiang, on hyalina. 

 the Yang-tse-kiang, the distal vitreous patch is narrower than the black space which separates it from the 

 proximal window-patch. — In thibetana Oberfh. (3i) the distal patch is broader than the interspace, and the tliibetana. 

 marginal band of hindwing, moreover, is narrower than in Leech's form. West China. 



24. Genus: Thyrassia Btlr. 



Antenna pectinated in cf and ?, the teeth of the last 8 segments merged together, almost as in 

 Procris statices L. Palpus short. Spurs very short, naked, thorn-like, one pair to hindtibia. Second median 

 vein of forewing widely separate from angle of cell; cell of hindwing very broad at apex, the subcostal 

 vein branching off at a considerable distance from the costa. — Larva (of T. procumbens SnelL, Java) on 

 Vitis trifoliata. Dark yellow, paler beneath, with white hairs on the sides. Pronotum with a brown dorsal 

 spot, abdominal segments with a subdorsal spot each which is white on the 1., 3., 6. and 7. somites. Pupa 

 in a cocoon which is fastened to a leaf. — Indo-Malayan ; one species extending to West China. 



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