—: 360 — 
polyporus, and pith; the last named is excellent except for its 
power of absorbing moisture and corroding the pin. We are trying 
pith supports impregnated with paraffin wax in the hope of 
overcoming this defect. 
For Anopheline Mosquitoes collected for the sake of locality- 
records and similar objects, where detailed examination of speci- 
mens may be unnecessary, a method shown me by Dr. C. A. BENT- 
LEY would appear useful. This consists in laying the Mosquito 
on a glass coverslip (or sheet of mica) and covering it with a 
I °/ solution of celloidin; when dry this is painted over with 
thicker celloidin, and the whole is backed with white enamel, 
making an absolutely permanent mount. 
‚Eu 
