190 THEOPHILA; ANDRACA; OBERTHUERIA; IVIIt^STILIA. By Dr. K. Grunberg. 



i. I. These races differ one from another in the size or in the length of life of the larvae, the number of changes 

 of skin (3 to 4), size and colour of the cocoon. A few races have two broods yearly. l)\it normally there is only one. 



2. Genus: Tlieopliila Moore. 



Closely aUied to Bombyx. Antennae and body as in that genus. Palpi absent. Shape of wing similar 

 to Bombyx, with the same deep round sinus below the apex of the forewing, which is strongly convex at the 

 costal margin, but the distal margin sometimes somewhat wavy. Vein 5 of both ^\^ngs originates before the 

 middle of the discocellular vein, this straight in both wings, vertical in the forewing and directed obliquely 

 distad and anad in the hindwing so that the lower angle of the cell is acute. Venation otherwise as in Bombyx. 

 mandarimi. Th. mandarina Moore (35 e). Body and wings with olive-brown ground-colour, forewing somewhat 



lighter, more suffused with grey, in the arrangement of the markings resembling Bombyx mori, but the dark 

 bands rather diffuse. Apex and anterior half of distal margin occupied by a deep black brown spot wliich 

 is only divided from the narrow submarginal Hne by a narrow light grey interspace. Hindwing above uniformly 

 brown, only at the inner margin with a black-brown spot sharply edged with white, beneath with two prominent 

 curved median lines. Forewing with broad scales branched like down, giving the wing a particularly soft 

 fii.fraUi. a])pearance. Eastern China, Corea and Japan. — fuscata Motsch., from Japan, appears to be only a dark 

 form of mandarina according to the description. 



3. (Jeims: Audraea Walk. 



Branches of antennae much shortened towards the apex. Palpi small, porrect. Forewing with sharp 

 produced apex,'distal margin slightly concave in its costal half, and angulate at vein 4. Inner margin of hind- 

 wing deeply concave. In the forewing veins 3 and 4 from the lower angle of the cell, and 6 from the upper, 

 7, 8, 9 and 10 stalked. In the hindwing veins 6 and 7 from the upper angle of the cell, 8 connected with the 

 cell by a short transverse vein near the base. Besides a South-Asiatic species only one other is known, said to 

 be from Japan. 

 (jradllt. A. gracilis Bull. Forewing reddish brown with sharp black discal spot and three blackish dentate bands : 



a feubbasal, (hscal and a submarginal one. Hindwing brownish yellow at the costal margin, reddish near the 

 inner margin, with a small dark discal spot. Body above reddish brown, beneath bright Hght golden brown. 

 Is said to occur in Japan; but the newer catalogues do not mention it in tliis genus as coming from there, so 

 that its occurrence in the Palearctic Region requires confirmation. 



4. Genus: Obertliiieria Stgr. 



Antennae only strongly serrate in the apical third. Palpi relatively large, extending slightly beyond 

 the frons, somewhat upturned and pointed. Distal margin of forewing with a pointed tooth at vein 4, the 

 distal margin of hindwing also strongly projecting at vein 3 and slightly wavy at the other veins. In the fore- 

 wing vein 10 is absent, in the hindwing vein 8 touches the cell at a point clo.se beyond the base; veins other- 

 wise essentially as in Bombyx. Onlj- one species of this genus as yet known. Amurland and Japan. 

 caeca. 0. caeca Oberth. (35 e). Brownish yellow, forewing with black discal spot and three irregular black 



transverse hands: one subbasal, anotiier discal and a third submarginal; the two last also traverse the whole 

 breadth of the hindwdng. In the forewijig, moreover, an elongate brown marginal spot. Ussuri district. The 

 ruiilans. Japanese form, which we name ab. rutilans ab. nov., is dull brownish red, the body dull, the wings slightly glossy; 

 the dark markings are less distinct than in the continental form and the extended marginal spot of the fore- 

 wing is less distinct. The underside is light rust-coloured with sharp black discal dot and equally sharp discal 

 and submarginal band. Japan. 



5. Genus: Miistilia Walk. 



Antennae with long pectinations only in the basal half, the distal half with quite short teeth. Tongue 

 short but fairly broad. Frons smoothly hairy. Forewing with elongate sickle-shaped apex, distal margin 

 deeply concave, entire and merging into the almost straight hind margin in a broad curve. Hindwing broad 

 but also rather elongate, costal and anal angles rounded, but distinct, distal margin entire, projecting most 

 strongly at vein 3. Vein 2 of forewing from the middle of the cell, 3 and 4 widely separated, 5 in front of the 

 middle of the discocellular vein, 6, 7, 8, 9 and 10 stalked, 6 close below and 11 close before the upper angle of 

 the cell, 8, 9, 10 and 11 running close along the costal margin. In the hindwing veins 2 to 5 as in the forewing, 

 6 and 7 close together from the iipper angle of the cell, 8 connected with the cell by a short transverse vein 

 near the base. Discocellular vein of forewing with sharp angle below the middle, in the hindwing with 

 rectangular bend before the centre. The genus belongs to the Oriental Region and occurs especially in Northern 

 India. Only one species concerns us here. 

 falcipennis. M. falcipennis Walk. (29 e). Frons and collar bright golden brown, vertex, dorsum of thorax and base 



