2836 Microscopical Society. 



terrella; luulella (Aphelosetia), C ; Gerronella, Z. ; divisella, Doug, (allied to mu- 

 linella) ; Desertella, Edleston. (allied to terrella) ; Coronillella, Tucker, (allied to An- 

 thyllidella, but larger); suffusella, Doug.; Mundella, Doug.; peruigrella, Sta. 

 (reared by Mr. Gregson from larvae, off sallow) ; inornatella, Doug. ; littorella, Doug.; 

 immaculatella, Doug. ; fumatella, Doug. ; bifractella, Mann: the twelve last species 

 were hitherto unrecorded as British. — H. T. S. 



Proceedings of the Microscopical Society of London. 



May 15, 1850. — Matthew Marshall, Esq., in the chair. 



Frederick Symonds, Esq., M. Waller, Esq., and Alexander Hett, Esq., were bal- 

 loted for and duly elected members of the Society. 



A paper, by P. H. Gosse, Esq., " On the Anatomy of Notomata aurita, an animal 

 of the class Rotifera," was read. The animal now described is an inhabitant of our 

 fresh waters, especially those which are still and accompanied with aquatic vegeta- 

 tion. It has received its name, aurita, from the circumstance of the instruments 

 carrying the cilia putting on the appearance, when expanded, of ears on either side of 

 the head of the animal. Mr. Gosse entered very minutely into a description of the 

 anatomical details of this creature, particularizing the gizzard, stomach, ovary, the 

 eyes, and some curious appendages which appear to be connected with it, and the 

 various bands for producing muscular motion; from the nature of which he arrived at 

 the conclusion that the class, Rotifera, should be placed higher in the system of nature 

 than has hitherto been customary ; and he considered them as belonging to the Arti- 

 culata. He also mentioned the circumstance of his having discovered that some of 

 them were certainly with the sexes in different individuals, agreeing in this respect 

 with three species of Brachionus, which produce male and female young very distinct 

 in appearance and structure. — J. W. 



Extract from the Correspondence of Mr. H. W. Bates, now forming 

 Entomological Collections in South America. 



(Continued from page 2793). 



[Although the following Extracts from letters addressed by Mr. 

 Bates to his friend, Mr. Brown, of Burton-on-Trent, unavoidably con- 

 tain some repetition of matters before given, we think the new details 

 they offer will interest many of our readers. — E. N.~\ 



"Para, June 17, 1848. 



"We have been twenty days ashore, and are now settled at a 

 spacious country house at the village of Nazara, one mile and a half 

 from Para, close to the virgin forest : we intend to stay here three 

 months, and then remove across the river for a few months. How 



