XXVI 



to the approach of midniglit, although the diurnal variation of light does not, 

 in July, equal in intensity the difference between rural sunshine in this 

 country and the light ^Yhich passes for daylight in London when the sky is 

 slightly overcast. He mentioned, in conclusion, that no Bombus has been 

 hitherto found in Spitzbergen, and .that Pedicularis hirsuta appeared to be 

 unvisited by insects in that archipelago. 



In reply to a question from the President as to the habits of the Arctic 

 Culex, the Rev. A. E. Eaton remarked that when in Spitzbergen he had 

 suffered much from the attacks of this insect, which had the habits of a 

 true mosquito. 



Mr. Meldola exhibited a five-winged specimen of Gonepteryx rhamni, 

 caught near Brandon, Norfolk, in August, 1873, by Mr. John Woodgate. 

 He also exhibited a gynandromorphic specitnen of Pieris hrassiccB, taken 

 near Thame, Oxfordshire, by Mr. J. B. Watson, in August, 1877. In this 

 last specimen the right fore and hind wings were female and the left male; 

 the right antenna was also longer than the left. 



Mr. H. Goss exhibited an hermaphrodite specimen of Gonepteryx rhamni, 

 caught in Abbot's Wood, Sussex. He stated that he believed the specimen 

 to be what Ochsenheimer called a " perfect hermaphrodite," the whole of 

 the right side, both in characters and organs, being female and the whole 

 of the left side male. Mr. Goss remarked that from the recorded instances 

 of hermaphroditism among the Lepidoptera it appeared that it was more 

 common for the left side to belong to the female sex, and that in fourteen 

 out of twenty-three instances of perfect hermaphrodites cited by Bur- 

 meister this was stated to be the case, and only in nine instances out 

 of the twenty-three did the female characters and organs appear on the 

 right side. 



Mr. J. W. Douglas exhibited the following insects : — 



1. An example of Polyphylla Fullo, Linn., which flew on to a steam 

 vessel at Antwerp in August, and was thus brought to London. 



2. A specimen of Tettigometra impressopunctata , Duf. (a rare species, 

 and the only representative of the genus in Britain), which was taken 

 casuall}^, on October 1st, at Sanderstead Downs, this being the fourth 

 recorded locality in this country. 



3. An example of Typhlocyha debilis, Doug., taken at the same time and 

 place as the last-mentioned ; also T. tenerrima, H.-Schf., its nearest ally, 

 to show the difference of the species. 



Mr, W. C. Boyd exhibited a larva of Pieris rapcB, which had been 

 attacked by Microgaster. (See Proc. Ent. Soc, July 5th, 1875, and 

 December 6th, 1876.) 



Prof. Westwood read notes on new exotic lamellicorn Coleoptera, and 

 exhibited specimens of Calomelopns Nyassa and Amblyodus Nicaragucs, 

 also drawings of these beetleti and of Valgus furcifer, Sumatra; Nicayus 



