1837.] On the indigenous Silkworms of India. 41 



as a moth not larger than the Bombyx mori. I could not yet procure 

 specimens of it : probably there are several species of Bombyx confused, 

 as the silk, which sometimes comes in trade, varies considerably. 



3. The Joree silkworm, Bombyx religiosce, mihi. — I am sorry to 

 say that the specimens of this interesting moth have been destroyed 

 on their way from Assam to Calcutta, so that I am obliged to make 

 a superficial description from the accompanying drawing, (PI. VI.) 

 excluding a diagnostical analysis. 



Genus, Bombyx. 



Length about 1^ of an inch. 



Antenna, pectinated. 



Head, small, covered. 



Eyes, very large, brownish black. 



Palpi, unknown. 



Thorax, subquadrate, covered with thick brownish grey hair, with a 

 black band separating the abdomen from the thorax. 



Abdomen, represented as having eight segments ? 



Legs, unknown. 



Wings, upper wings very short (in J imperfect) triangular, with 

 the acute angle outward. The interior side emarginated. Of a light 

 grey color which darkens towards the extremity. 



An interrupted whitish band on the lower margin with a large 

 whitish speck towards the ends. 



Lower wings uniformly brown. 



The cocoon of this silkworm shows the finest filament, and has 

 very much silky lustre. It is exceedingly smooth to the touch and 

 ▼ery different from the cocoon of the mulberry tree. 



This discovery of Capt. Jenkins is very interesting, as it yields a 

 silk if not superior yet certainly equal to that of Bombyx mori. 



It lives upon the pipul tree, (Ficus religiosa.) Its general intro- 

 duction would be very easy, as the pipul tree grows abundantly over 

 all India. 



Specimens of cocoons sent a second time by Captain Jenkins, con- 

 vince me that the Joree and Deo-mooga are the same species. 



4. Saturnia Silhetica, mihi. (Longitudo pollices novem, sive lineas 

 108 alarum superiorum expansarum.) 



Diagnosis. Pectinicornis, alis superioribus apice recurvata falcatis, 

 inferioribus oblongis. Alis superioribus maculis duabus fenestralibus, 

 interna triangular i magna altera externa raulto minori oblonga, in- 

 ferioribus macula eadem una versus corpus triangulari magna. Colore 

 cinamomeis lineis variegater albidis in medio ad marginem externam 

 flavis. 



