91 



Lyprus cylindrus. One individual, captured by Dr. Power, about six weeks since, 

 in the Isle of Sheppey. 



Trechus longicornis. One example, found by Mr. Pinder on the Lancashire coast. 



Mr. Janson exhibited, on the part of Mr. T. P. Dosselor, four females of a species 

 of Aphis recently taken within a few days of each other, and apparently of one gene- 

 ration, and of which, since their capture, two had produced broods of living Aphides, 

 and two had deposited eggs. He remarked that he had paid but little attention to the 

 Hemiptera, especially to the homopterous division of that order ; but he believed it 

 was an axiom that all the individuals of the same generation perpetuated their kind 

 in the same way, that is to say that they were either oviparous or viviparous. 



The President observed that Mr. Francis Walker, who had studied these insects, 

 and who was present, could probably throw some light on this seeming anomaly. 

 Mr. Janson accordingly placed all the specimens and their progeny in that gentle- 

 man's hands. 



The President stated that on the recent visit of Dr. Hagen to this country he had, 

 whilst entomologizing at a pond near his residence, noticed Notonecta glauca rise and 

 seize small insects on the surface of the water. This fact suggested the idea to the 

 juvenile members of his family to attempt the capture of these insects by means of a 

 fly attached to a thread ; and so successful was this mode of fly-fishing that in a short 

 time they secured above 100 examples. 



Mr. Douglas read the following notes by W. G. Gibson, Esq., of Dumfries, on the 

 capture of Colias Edusa, and other species which are usually rare in Scotland, during 

 the past season : — 



*' Of Colias Edusa the first one was caught in a clover field in the parish of Kirk- 

 mahoe, four miles north of Dumfries ; the next seven were taken in a turnip field 

 near Glencapel Quay, eight miles south-east of Dumfries, near the mouth of the Nith ; 

 six were taken at Southerness, Kircudbrigbtshire, fifteen miles below Dumfries, on 

 the banks of the Solway Firth. One was seen flying in the streets of the town ten 

 days before the first one was taken. Only three females have been seen. 



" Two specimens of Thecla Quercus were caught last week near here, by Mr. 

 James Browne, Crichton Institution. 



" Vanessa, lo and V. Atalanta have been very common here this season. Of the 

 former I bred upwards of 200 specimens. 



" Two specimens of Gryllus migratorius have been taken in Dumfriesshire this 

 month." 



Mr. Stevens read the following letter, received by him from Mr. A.R.Wallace: — 

 " Dobbo, Arm Islands, March 10, 1857. — Here I am, alive, well, and hard at 

 work. I have been here just two months, and as I am going into the interior I leave 

 this note to be sent by a vessel which returns to Macassar in April. The country is 

 all forest, flat and lofty, very like the Amazonian forest. Insects, on the whole, are 

 tolerably plentiful in specimens, but very scarce iu species. There are, however, some 

 fine things, and I am getting good series of several, including Ornithoptera sp., near 

 Priamus, perhaps O. Poseidon, or close to it, a glorious thing but hard to get perfect ; 

 four or five other rare or new Papilios, but all scarce; Cocytia d'Urvillei? rather 

 scarce, a lovely creature ; also Hestia d'Urvillei. For six weeks I have almost daily 



