516 PROCEEDINGS OF THE 



and beautifully feathered, had vegetated, and which probably 

 belonged to the genus Trichia. In another specimen, one of 

 the large Brazilian CurcuUonidcc, a Dipterous larva had pro- 

 truded itself between the thorax and the head. 



Mr. Westwood noticed a remarkable modification in the 

 habits of the caterpillars of a small moth ; which at first burrows 

 in the leaves of the common lilac, but after it has attained suf- 

 ficient strength, it rolls back the leaves, fastening them in a curl 

 with silken thread. 



The following memoirs were read : — 



1. Further notes on the habits of Stylops Dalii. By Mr. 

 Thwaites. 



2. Conclusion of a monograph on the genus PopilUa. By 

 Mr. Newman. 



8. Description of a remarkable specimen of Dytiscus margi- 

 nalis, in which part of the external marks of sex were ob- 

 literated, and partly replaced by those of the opposite sex. By 

 Mr. Westwood. Mr. Yarrell also noticed several somewhat 

 analogous instances occurring in the Crustaceous animals. 



Sitting of the Gth August, 1838. 



W. E. Shuckard, Esq. in the Chair. 



A considerable variety of interesting insects was exhibited 

 by different members, including a fine collection from the 

 Himalaya mountains, by Mr. W. W. Saunders. 



Mr. BowERBANK exhibited a living specimen of the curious 

 genus Cermatia, from Ceylon. 



Mr. Stephens exhibited a curious monstrosity occurring in 

 Eryx niger. 



Communications were made relative to the growth of the 

 real Cochineal insect, in the hot-houses at Claremont, by Mr. 

 Sells ; the capture, in vast numbers, of the common Spanish 

 blister-fly near Southampton, by Dr. Hairly ; and the injuries 

 committed by a small beetle on Arabic MSB, brought home by 

 Burckhardt, in the Cambridge library, by Mr. Holme ; who 

 also announced the capture of a pair of the rare Onthophagus 

 taurus, of which only a single specimen had hitherto been found 

 in this country. 



A letter was read from Mr. Spence, relative to the causes 



