16 



and their respective divisions '. The attention of our Society has 

 been called to the specific distinctions of various British species of 

 the genus Dromius by Mr. Babington. 



Dyticidce. — The family of the Water Beetles, Dyticide, has been 

 revised by Dr. Erichson-, who has added several new generic groups, 

 and also, together \\'ith the GyrinidtE, by M. Laporte in his ' Etudes 

 Entomologiques ' above mentioned. 



Hydrophilid(E — M. Solier has undertaken the revision of the Hy- 

 drophilidce in the ' Annales' of the Entomological Society of France ^ ; 

 tmd Mr. Waterhouse has published a monograph vipon one of the ge- 

 nera, Hydrcena, in which numerous rjew British species are described*. 



The Brachelytra., or Linnsean Staphylini^ have been submitted to 

 a minute analysis by the Count De Mannerheim, whose memoir has 

 been published in the Transactions of the Petersburgh Academy ^ ; 

 and Dr. Gravenhorst, one of our Honorary Members, has announced 

 to us his intention of again dii-ecting his attention to the same group. 

 M. Laporte has also published descriptions of various new exotic 

 genera and species in the 2nd part ofliis 'Etudes Entomologiques'. 

 The curious little family PselapJiidee has formed the subject of a va- 

 luable and recent monograph by M. Avibe, published in Guerin's 

 Magasin de Zoologie, in which highly magnified figures of all the 

 species are given ^, forming a fit companion to Mr. Denny's mono- 

 graph upon the same family. 



The Histrida have been revised by Dr. King in his Jahrbucher, and 

 not less than twenty-one genera have been proposed in the family, and 

 a very great number of species descrilied. The family Lucanida has 

 recently received several splendid additions, including the Chiaso- 

 gnathus Grantii of Mr. Stephens 7, and several other new genera, of 

 which I have given characters in the ' Annales des Sciences Natu- 

 felles**', accompanied by a synoptic table of the entire family. M. Per- 

 cheron has just published a monograph upon the exotic genus Pas- 

 »va^i<s", containing not less than fifty species. Mr, Waterhouse made 

 a verbal communication at one of our early meetings upon the habits 

 of the common Stag Beetle. Numerous additions have been made 

 to the great Linnsean grouj) of Scarabceus, especially in the ' Ency- 

 clopedie Methodicpie,' vol. x. ; and Messrs. Gory and Percheron have 



^ Monographic der Carabideii, von Zimnieiniann ; Erstes Stuck : Svo, Berlin 

 and Halle, 1831. Containing the Zabroides. The Amaroides form the subject of a 

 memoir in the first number of tlie Faunus, von J. Gistl, Munchen, 1832. 



' Genera Dyticeorum Dissertatio inauguralis. Anctore Dr. G. F. Erichson. Bero- 

 lini, 1832. Svo, pp. 48. 



3 Vol. III. Part II. 



•• Entomological Magazine, Vol. I. p. 292. 



* Mem. presentes a I'Acad. Imp. Sc. St. Petersbourg, Tom. prem. 5"" Livraison, 

 1831. 



6 Plates 78—93. 



7 Cambridge Phil. Soc. Trans., Vol. IV. PI. 9, 10. 

 ** 2nd Series, February 1834. 



' Monographic des Passales et des Genres qui en ont ele separes, &€. Par A. 

 Percheron. Paris, 1835. With outline figures of all the species. 



