XXVI PEOCEEDINGS OF THE 



descendants of which still give a certain character to the Cole- 

 opterous fauna of the islands ; but by the long-continued segre- 

 gation of the species during the gradual submergence of the 

 land, and the changed conditions to which the European species 

 would thus be exposed, many of them have become more or less 

 altered, producing either marked varieties, or apparently distinct 

 specific forms. To this view, however, Mr. Wollaston does not 

 give in his adhesion ; and his arguments have considerable force ; 

 still we cannot but think that in these islands we have a natural 

 experiment, on a large scale, for testing the validity of the hypo- 

 thesis of the evolution of species. 



Our space warns us that we must dismiss the remainder of the 

 Entomological works to which we have to advert with almost a 

 bare mention. The sixth and seventh volumes of the admirable 

 ' Skandinaviens Coleoptera' of M. C. Gr. Thomson of Lund 

 appeared in 1864 and 1865, and include descriptions of the 

 Scandinavian Serricornes, Seteromera, and JRhynchophori. Several 

 families of European Beetles have been treated more or less 

 monographically by the Abbe de Marseul and other Erench 

 entomologists, in ' L'Abeille,' the periodical already mentioned as 

 having been established by him. Dr. Stal has completed his 

 monograph of the American Chrysomelidse, in the Nova Acta 

 of the Academy of Upsal. Another Swedish entomologist, M. 

 Holmgren, has published the first part of an ' Ichneumonologia 

 Suecica,' which promises to furnish an admirable monograph oi 

 the Scandinavian Ichneumonidse ; and Dr. Taschenberg has given, 

 under the title of " Die Hymenopteren Deutschlands," a synopsis 

 of the European genera of Hymenopterous Insects, which wiU 

 prove most serviceable to entomologists. In America, Mr. E. T; 

 Cresson has published a descriptive synopsis of the Hymenoptera 

 of Cuba, in the Proceedings of the Entomological Society ol 

 Philadelphia for 1865 ; and the same periodical for 1864 contains 

 an important memoir by Mr, B. D. Walsh on the Cynipidse, with 

 especial reference to the occurrence of dimorphism and partheno- 

 genesis in that family. 



An important work for the student of European Lepidoptera 

 is Dr. Werneburg's ' Beitrage zur Schmetterlingskunde,' which 

 contains a synonymic analysis of all the descriptive works on 

 that order down to the close of the last century. Mr. Stainton's 

 Natural History of the Tineina has been continued, the eighth 

 and ninth volumes having appeared in 1864 and 1865 ; and from 

 Sydney we have three parts of a fine folio work on the Australian 



