PROCEEDINGS OF THE SOCIETY. 260 



Mr. F. Enock then gave a lecture " On the Transformation of certain 

 Insects," which he illustrated by a number of very excellent lantern 

 slides — the species dealt with being those which were common in 

 suburban gardens, and were useful in the destruction of noxious insects. 

 Commencing with views of the common Aphides, or green fly, he showed 

 how these were attacked and destroyed by the larvas of Lace-wing flies 

 and Hover flies, the metamorphoses of which were subsequently traced. 

 The destruction of Aphides and of injurious larvae by various species of 

 ichneumon were also described and illustrated. The ravages of the 

 minute black-currant mites (Phytopti) were mentioned, and views shown 

 both of the creature, and the result of its presence in the buds of the 

 black currant bushes. The common " Devil's Coach-horse " (Oci/pus 

 oletts), frequently regarded with aversion, and destroyed when seen, was 

 shown to be an extremely useful insect in destroying injurious caterpillars. 

 Illustrations of " Fairy flies " (Myinaridse) concluded a very interesting 

 and instructive lecture. 



The President said he had been much delighted with Mr. Enock's 

 beautiful pictures, and his wonderful descriptions of the habits of the 

 insects illustrated, from personal observations. 



A vote of thanks to Mr. Enock for his interesting lecture was 

 unanimously carried. 



A paper " On the Fresh-water Crustacea of Algeria," by Mr. Gurney, 

 was communicated to the Meeting by Mr. D. J. Scourfield, who gave a brief 

 resume of its contents, the more technical parts of which would be printed 

 in due course in the Journal, where the paper would be printed inextenso. 



The following Instruments, Objects, etc., were exhibited :— 

 The Society :-- A Wilson Screw-barrel Single Pocket Microscope, made 

 by E. Culpeper : a Small Wilson Screw-barrel Single Pocket Micro- 

 scope, made by George Sterrop ; a Simple Pocket Microscope, made 

 by Banks ; a Lieberkiihn " Transparent Solar Microscope," made by 

 Dollond ; and six Slides of Foraminifera from the Adriatic, mounted 

 on the points of needles. 

 Mr. F. Enock :— Lantern Slides shown on the Screen illustrating his 

 lecture on the Transformation of Insects. 



New Fellows :— The following were elected Ordinary Fellows of the 

 Society : Albert Ashe, Charles Emanuel Heath, Massey D. E. G. Lyon, 

 Walter Scott, Wilber Fred Willis. 



