XXIV PROCEEDINGS OF THE 



a new genus of Insects belonging the Thysanura," characterized 

 by that accuracy of investigation and philosophical tone vs^hich 

 always lead us to regret that its distinguished author should have 

 published so little. The first part of our twenty-fifth volume was 

 entirely occupied by an entomological memoir on the Papilio- 

 nidse of the Malayan Eegion, by Mr. A. E^ Wallace, with especial 

 reference to the important questions of variation and geographi- 

 cal distribution. Our Journal also, during the past two years, 

 has contained the completion of Mr. "Walker's descriptions 

 of Diptera collected by Mr. "Wallace in his eastern travels. 

 These, indeed, seem to have singularly attracted the attention 

 of entomologists to the varied insect fauna of the rich tropical 

 islands of the Eastern archipelago ; and both in this country and 

 on the continent great activity has been displayed in the produc- 

 tion of more or less monographic treatises on the entomology of 

 the Malayan region. In our Journal, Messrs. Smith and "Walker 

 have published the complete revision of the species of Hyme- 

 noptera, Diptera, Lepidoptera, and Homoptera brought home by 

 Mr. "Wallace; and the Entomological Society has devoted two 

 separate volumes of its Transactions to the reception of treatises on 

 the Longicorn and Phytophagous Beetles of the Malayan region, 

 by Messrs. Pascoe and Baly. Abroad, M. Henri DeyroUe has 

 published descriptions of the Malayan Buprestidse of the Wal- 

 lacean collections, in the Annales de la Societe Entomologique 

 de Belgique ; and the Abbe de Marseul has described the 

 Malayan Histeridse in his new periodical, ' L'Abeille ;' whilst the 

 chief of the Dutch entomologists, M. Snellen van "Vollenhoven, 

 has commenced a series of monographs of the insect inhabitants 

 of the Dutch East-Indian possessions, two of which, treating of 

 the Scutellerides and Pierides, have already appeared. 



Turning now to special entomological monographs without 

 reference to geographical limits, the first place must be given to 

 Professor Lacordaire's ' Genera des Coleopteres,' of which the 

 seventh volume, completing the classification of the Curculionidse 

 and also including some allied groups, has recently appeared. 

 The well-established reputation of this most valuable work ren- 

 ders any further reference to it superfluous. As a sort of pen- 

 dant to it, however, we may notice a remarkable monograph, by 

 M. Chapuis of "V^erviers, on the Platypides, a subfamily of the 

 Bostrichidse, with which Professor Lacordaire closes his volume. 

 These are small wood-boring Beetles, of which about 16 species 

 were previously described ; M. Chapuis? now describes no fewer 



