18 



work of Graveuliorst upon the true Ichneumones^ will not easily' be 

 surpassed. 



The aberrant IchneumonidcE have been described by Dr. Nees von 

 Esenbeck'-; and Mr. Haliday 3, whose lucid details have thrown great 

 light upon this abstruse part of our science, has entered the same field. 

 A generic distribution of the Gall-flies has been published by me in 

 the Mag. Nat. Hist.^, where I have described several new species. 

 M. Fonscolombe has also described numerous French species of the 

 latter family in the 'Annalesdes Sciences Naturelles' ^ ; andDr.Hem- 

 merschmidt of Vienna has published a valuable memoir upon this 

 group of insects''. 



But the minute and splendid family of the Chalcidida has perhaps 

 received a greater share of the attention of recent Hymenopterolo- 

 gists than any other groups belonging to the order ; Fonscolombe 

 in France', Dalman", Bohemann in Sweden', Dr. Nees von Esen- 

 beck in Germany'", and Messrs. Walker", Haliday '-, and Curtis '3, 

 as well as myself '* having especially undertaken its illustration in 

 various works. 



The families of the Ants'"" and Wasps ">, notwithstanding their 

 great interest, are both waiting for a monographer. The annoyances 

 produced by a minute species of the former family have, upon several 

 occasions, been noticed at our meetings; whilst the fossorial ^yweHo- 

 ptera^'i have been investigated with much care both by M. Vander- 



' Ichiieumonologia Europaea. Auetore J. G. C. Gravenhorst. Vratislaviae, 1829, 

 3 Vols. 8vo. 



- Hymenopteroruni Ichneumonibus affinium monographiae, Genera Europaea et 

 Species illustrantes. Scripsit C. G. Nees ab Esenbeck. 2 Vols. Svo. Stiittgartiae et 

 TubingEe, 1834. 



3 Published in various Numbers of the Entomological Magazine. 



« November 1833, Vol. VI. p. 491. 



5 For June 1832. 



^ Observafiones Physiologicse Pathologica tie Plantarum Galloruni ortu Insectis 

 qui excresccntia proierentibus. Vienna. 



7 Annales ties Sciences Nat., July 1832. 



" Stockholm Transactions (Kongl. Vetensk, &c., 1820 — 1822. 



9/*. 1833. 



'" In the Series of Monographs above referred to. 



'1 In various Numbers of the F^ntomological Magazine. '- lb. 



'^ In various Numbers of the British Entomology. 



^* Zool. Journal, No. 13 ; Magasin de Zoologie, CI. 9. PI. 4; Lond. and Edinb. 

 Phil. Mag., Aug. 1832,June 1833, Nov. 1833 ; Mag. Nat. Hist., March 1833, Sep- 

 tember 1833, November 1833, March 183,'); Proceedings Zool. Soc, April 1835 ; 

 Ent. Mag., No. 7. 



'^ A memoir by Signer Losana, ' Saggio sopra le Formiche indigene del Piemonte', 

 in the Mem. delle Reale Ace. delle Scienze de Torine, Tom. XXXVII. 1834, must 

 be excepted, as well as Col. Sykes's account of several Indian species read before the 

 Society. 



'^ The work of M. Wesmael, entitled ' Monographic des Odyneres de Belgique', 

 51 pp. 1 PI. Bruxelles, 1833, should be excepted. 



'7 Since this Report was read, a valuable memoir by MM. Saint Fargeau and 

 Brulle, upon the genus Crahro, has appeared in the 4th Part of the 3rd Volume of the 

 Ann. Soc. Ent. de France. 



