346 Journal of the Asiatic Soc. of Bengal. [N.S., XVI, 1920.] 
EXPLANATION OF PLATE XVII. 
Fre. 1.—2nd cocoon of specimen No. 27 in the process of 
ormation—Nat. Size. 
Fig. 2. —and 0 cocoon of specimen No. 8 at a later stage of 
mation than in fig. 2.—Nat. Size 
Fia. 3. as cocoon of specimen No. 8 newly laid—Nat. 
Size 
Fig. 4 Hardened cocoon of No. 10.—Nat. Size. 
