34 



C. SASAKI. 



stitute a detailed comparison with the cultivated form. 



If we now compare the adult of our wild silkworm with Tlieopliila mandarino, 

 which Mr. F. MOORE has described in the extract of the Proceedings of the 

 Zoological Society of London, April 1872, we can not find any difference between 

 the two. His description is: — "Female grey: fore wing with a well-defined 

 antemedian curved transverse brown band, and a transversa postmedian suffused 

 brown line, beyond which is a submarginal white-bordered recurved narrow line, 

 outside of which is a suffused brown patch below the apex ; discocellular mark 

 indistinct : hind wing brown, with a whitish submarginal line, and two white 

 spots on abdominal margin : thorax brown, waist band grey ; antenna? fuliginous, 

 shaft grey. " 



In the " Bulletin des Soies et des Soieries ", 26 September 1885, in 

 T. Wardle's Handbook of the Collection illustrative of the wild silks of India" 

 and also in " Bolletino Mensile di Bachicoltura " No. 2, 188C, are mentioned 

 some accounts on lîieophila mandarino, but its specific characters are not 

 described. 



In the following lines, I will mention the specific characters of the adult of 

 our wild silkworms as well as its eggs, larvae, cocoon and pupa in order to com- 

 pare with those of Iheophila manchi-ina, which is said to be commonly found on 

 mulberry trees in China. 



If we now compare the adult of our wild silkworm with Theophila mandarino, 

 it will be found that both, agreeing in their specific characters, belong undoubted- 

 ly to one and the same species. 



The adult of our wild silkworms has the following characters : — 



Female light brownish grey ; fore wing light greyish brown with two not 

 well defined recurved bands, of which the inner (antemedian) is brown, while the 

 outer (postmedian) is much lighter in color. The outer edge of the postmedian 

 band is bordered on its distal edge with a dark brownish line, along its outside 

 runs a white recurved line. A portion of the wing lying just below the apex is 

 slightly indentated, and the latter is bordered with a blackish brown patch. 

 Discocellular mark lying between the two brownish bands indistinct. The 

 principal veins of the fore wing are six ; namely costal, subcostal, radial, medial, 

 cubital and anal, all of which arise near the base of the wing (fig 2). Hind 

 wing light brown with its outer half colored dark brown, and in the centre there 



