152 



Hymenoptera. 



An important memoir on the structure of the female organs of generation in the 

 Hymenoptera, by M. L. Duthiers, has appeared in the 12th and 13th volumes of the 

 Ann. Sci. Nat. 3rd ser. ; in which the author has endeavoured to prove that the saw of 

 the Serrifera, the ovipositor of the Terebrantia, &c., and the sting of the Aculeata, are 

 only modifications of one and the same instrument, as asserted by myself in the ' In- 

 troduction to the Modern Classfication of Insects.' The author has given highly 

 magnified views and descriptions of these parts, in all the chief types of the order. 



A notice of the geographical distribution of the Hymenoptera of North America, 

 has been published by Mr. Adam While, (Ann. Nat. Hist. viii. 503). 



Mr. F. Smith has also published descriptions of various East Indian Hymenoptera 

 in the collection of the East India Company, collected by Mr. Ezra Downes, with 

 notes on their economy, (Ann. Nat. Hist. ix. 44). Also, descriptions of four new Bri- 

 tish Hymenoptera belonging to the families Chrysididse, CrabronidEe and Apidse (Zool. 

 cxxv.) 



A note by Mr. F. Smith, on the Hymenoptera of the Undercliff of the Isle of 

 Wight, makes us acquainted with several new British species of ants and other Acu- 

 leata, and is accompanied by remarks on the habits of Philanthus triangulum, and on 

 the singular position in which Fcenus assectator hangs suspended by its mandibles be- 

 neath the umbels of the wild carrot when asleep, (Zool. 3248). 



Thirty species of new Prussian Hymenoptera, belonging to different families, are 

 described by Foerster iu the ' Verhandlungen ' of the Prussian Rhenish Natural His- 

 tory Society, 7th year. 



Tenthkedinid^e. 



A note upon the economy of Trichiosoma lucorum, with reference to the mode in 

 which it escapes from the cocoon, has been communicated to us by Mr. Maysmor, 

 (Proceedings, p. 82). 



Mr. Stephens has announced the discovery of the Selandria sericea, a Tenthredi- 

 nidan new to Britain ; and also described the male of the rare Lyda inanita, (Zool. 

 3163). 



Siricid^;. 



A notice by the late Mr. Edward Doubleday of the transformations of Sirex Gigas, 

 with a beautiful plate, is published in the last part of the ' Proceedings of the Zoolo- 

 gical Society.' 



IcHNEUMONIDjE. 



Three articles by Professor Wesmael, on the Ichneumonidae, have appeared in the 

 16th volume of the 'Bulletin ' of the Acad. Roy. de Belgique. 1. A Review of the 

 genus Anomalon, divided into 5 subgenera, containing 20 species. 2. Adnotationes 

 ad Descriptiones Ichneumonum Belgii. 3. A Notice of the Belgian Species of Me- 

 topius, Banchus and Coleocentrus. 



A monograph by Herr Foerster of the genus Pezomachus, Grav., has appeared 

 (Berlin, 1851, pp. 240), comprising 233 species, divided into 9 subgenera, Pezoma- 

 chus alone containing 201 species. 



The continuation of M. Boyer de Fonscolombe's memoir on the Ichneumonidae of 



