from Dr. Wallace two living larvae, and fed them on Quercus pedunculata; on 

 the 20th both rested for their first moult, and on the morning of the 23rd both 

 had changed their skins ; one ate its cast-oflf skin, the other did not ; on the 

 29th one of the larvfe was missing, and on the 1st of December the remaining 

 one suspended itself for another change of skin ; on the morning of the 4th it 

 had changed skin, and during its feeding up in this skin the supplj'^ of Quercus 

 pedunculata failed, but various species of evergreen oak were tried, and it 

 seemed to eat almost any indifferently; on the 16th of December it again 

 threw off its skin, and after the 23rd was at times in a temperature as low as 

 SO*^ Fahr. ; on the 2nd of January, 1870, it again changed its skin, and ate the 

 cast-off skin during the night ; and on the 18th it began to look out for a place 

 to spin. In the last two skins it would drink several drops of water, as many 

 as six or eight, every day, but when the food was wet it would not do so : except 

 at the period mentioned above, the temperature was always above 55°, and the 

 only effect of the -lower temperature was to retard growth. The cocoon obtained 

 from this larva had been sent by Dr. Chapman to Dr. Wallace, and was exhibited 

 to the Meeting : the chief feature worthy of notice was the dominant influence 

 of the male parent upon the hybrid offspring, the larva throughout its career 

 and the cocoon more closely resembUng B. Pernii than A. Yamamai. The 

 dominant influence of the male had also been observed by Mr. Brady, of Sydney, 

 in his experiments on B. mori (see Report of Acclimatization Soc. of Sydney 

 for 1868). Another point worthy of observation was that, even at so late a 

 period of the year, the larva fed well on the evergreen oak, which, according to 

 Dr. Wallace's experience, was largely eaten by all the oak-feeding species. 



TPaper read. 



The following paper was read : — " Descriptions of twelve new exotic species 

 of the Coleopterous family Pselaphidse ; " by Prof. Westwood. 



Eight new genera were founded, under the names Goniastes, Rhytus, 

 Curculionellus (three species), Sathytes, Pselaphodes, Sintectes, Phalepsus and 

 Ryxabis; and two species were added to the genus Bryaxis. 



21 March, 1870. 

 H. W. Bates, Esq., Vice-President, in the chair. 



Donations to the Library. 



The following donations were announced, and thanks voted to th^donors : — 



' Tijdschrift voor Entomologie,' ser. 2, vol. iv. pts. 2 — 6, vol. v. pt. 1 ; presented 



by the Entomological Society of the Netherlands. ' Stettiner Entomologische 



Zeitung,' 1870, pts. 4 — 6 ; by the Entomological Society of Stettin. Stierlin's 



