necessarily restricted in their range, whereas those found in the plains were 

 of wide distribution. He remarked that all the species of the genus 

 Oxytelus, seen by him, from Eastern Siberia, were specifically identical with 

 those of Britain, whereas of the genus Bledius no species was common to 

 both countries. 



Messrs. Weir, Miiller, Jauson, M'Lachlan, &c., also took part in the 

 discussion, and the two latter remarked on additional instances of the 

 occurrence of allied forms in Eastern Asia and North America, as exhibited 

 in the genus Pteronarcys among the Neuroptera, and Cupes in Coleoptera. 



Mr. Miiller exhibited galls of an Acarus, probably a Phytoptus, from 

 Bombay, concerning which he read the following notes : — 



" My friend Mr. F. Moore has kindly presented me with some leaves of 

 Cinnamomum nitidum, from Bombay, exhibiting on their upper surface 

 isolated, rusty-brown, smooth and hard pouch-shaped excrescences, each of 

 the size of a large pin's head. These excrescences are hollow, and provided 

 on the under side of the leaf with an opening equal in diameter to the basin 

 on the upper side. The sight of these objects enables me to assert the 

 existence in India of a species of gall-producing Acaridae, probably four- 

 footed, and allied, or perhaps belonging to the extensive European and 

 American genus Phytoptus. In size and structure these Cinnamomum 

 pouches tally with those of the European Phytoptus gall, called by Bremi 

 Cephaloneon solitarium, of which my collection contains British and Conti- 

 nental specimens. But they differ from the latter in being less restricted 

 at the basis, with both inside and outside quite smooth, and in exhibiting 

 on the under side of the leaf a slight rim surrounding the open pouch. The 

 absence of all pubescence from the pouch chiefly distinguishes them from 

 the European form, and this character is quite in accordance with the highly 

 polished, smooth, outer texture of the healthy leaf of Cinnamomum." 



Fapers read. 



Mr. Baly communicated descriptions of various new species of Cassididce, 

 from Ecuador and Nicaragua. 



Mr. W. F. Kirby communicated " Notes on the Diurnal Lepidoptera 

 described by Jablonsky and Herbst in their ' Natursystem aller bekannten 

 Insecten'." 



]\Ir. Dunning read a memoir on the genus Acentropus, in which he 

 brought together a resume of all that had been written on the subject. 

 After commenting upon the opinions expressed by various authors as to the 

 position of the genus, he arrived at the conclusion that it is truly Lepidop- 

 terous ; and, furthermore, he had failed to find valid reasons for considering 

 that more than one species existed, for which he retained the name 

 Acentropus niveus. 



