MICROSCOPICAL PREPARATIONS. 



11 



DiPTEEA. 



172, 173. Blow Fly labium (Lowne, p.47) B ... ... T. C. White. 



174. „ Operculum (Lowne, t. 2. f. 7) B ... „ 



175. „ (Lowne, pp. 47-8) B ... „ 



176. „ portion of section i^ eye (Lowne, p. 7) B „ 



177. „ Proboscis B 



