MISCELLANEOUS NOTES. 
1147 
certainly to the same genus. It might be of interest to mention that in my 
speeimen the first subcostal nervure of the right forewing is forked and 
so is Cm', while the venation of the loft forewing is perfectly normal and agrees 
with that shown in Petersen’s figure. I. crassicornis is apparently wid ly dis- 
tributed and has hitherto been rocortled from Sweden, Saxony, Westphalia, 
Silesia, Hungary, Italy, Siberia, and as close to India as Japan. 
Calcutta, 
20f/i Janvuary 1922. 
CEDRIC DOVER. 
No. XXXII. -A NOTE ON THE REPRODUCTION OF THE COMMON 
HYDRA OF BENGAL {HYDRA VULGARIS, PALLAS). 
The following observations were made on Hydra vulgaris, Pallas, in the months 
of August and September, 1920. The polyps were reared in cylindrical glass 
ars containing weeds from a pond. * 
EXPLANATION OF FIGURES. 
Fig. 1.- — Budding Hydra with characteristic moniliform appearance. 
Fig. 2. — Colony formation of Hydra by budding. 
Fig. 3. — Vertical fission of Hydra. 
Fig. 4. — Hydra bearing spermaries in different stages of development. 
Fig. 5. — Hydra bearing spermaries and a bud. 
