ACOSMERYX. 297 



more broadly below by pink, on 6 to 12 ; the flange edged 

 broadly with yellow on 2 and 3 and the anterior half of 4, 

 with bro Avnish-maroon on rest of 4 and 5, the latter colour 

 embracing the spiracle of 5, and again edged broadly by yellow, 

 giving the spiracle the appearance of an ocellus ; underside 

 of flange fuscous on 2 and 3, black on 4 and 5 ; a round dorsal 

 spot, plum-colour surrounded by yellow, on the front margins 

 of 5 to 11 ; pale yellowish -green oblique stripes on 6 to 11 : 

 horn reddish-brown ; true legs dark reddish-brown ; anal 

 flap edged with yellow. Spiracles white, the slit black and 

 edged on each side with black, the whole with a narrow, shining- 

 black rim. Length 100 mm. ; breadth 13 mm. 



Pupa. — Shape as in others of the genus ; antenna about 

 one-third, fore leg one-half, and mid-leg two-thirds length to 

 tip of wing-case. Surface shining, margins of segments 

 deeply impressed, costa and veins of wings and legs beaded ; 

 head, thorax and wing-cases reticulate ; dorsum of abdomen 

 and whole of segments 12 to 14 closely, coarsely pitted, the 

 pits smaller except on venter of 11 ; sex-marks, clasper and 

 horn scars prominent, the sex-mark of £ large, broadly oval, 

 tumid, with a central, spiracle-like slit. Spiracle of 2 a narrow 

 slit between the curved hind margin of 2 and the narrow, 

 raised front margin of 3 ; remaining spiracles broadly oval, 

 flush, the central slit with narrow, raised edges. Cremaster 

 a rugose knob ending in a short, cylindrical, minutely bifid 

 tip. Colour reddish-brown dorsally, yellowish ventrally, 

 wing-cases greenish with the beading of veins and legs black ; 

 spiracles, cremaster and sex-marks black. Length 52 mm. ; 

 breadth 14 mm. 



Habits. — Food-plants : Vitis Linn, and Leea Linn., family 

 Ampelidese, and Dillenia pentagyna Roxb., family Dilleniaceae. 

 The moths have not been caught at flowers, nor do they 

 appear to come to light. We never succeeded in inducing 

 bred specimens to mate, nor bred £$ to attract wild <$$. 



93. Acosmeryx sericeus sericeus (Walk.). (Fig. 74 G-I, 

 genitalia). 



Philampelus sericeus, Walker, 1856, p. 181 (Sylhet). 



Acosmeryx sericeus, Butler. 1881 B, p. 1, pi. lxxvi, fig. 2 ; Cotes 



& Swinhoe, 1887, p. 8 (Svlhet ; Sikkim); Swinhoe, 1892, p. 8 



(Assam) ; Roths. & JoroC 1003, p. 503. 

 Acosmeryx ancea f. sericea, Dudgeon, 1898, p. 409 (Sikkim ; Bhutan ; 



2,000 ft.). 

 Acosmeryx sericeus sericeus, Seitz, 1 929, p. 550, t. 63 c. 

 Acosmeryx ancea, Hampson (non Stoll), 1892, p. 81. 



Imago. — $$. Metanotum chocolate-tawny at sides ; chest- 

 nut-brown markings of abdominal tergites rather prominent. 

 Fore wing upperside much shaded with violaceous-grey, the 



