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Jitomir, near Kieff, in the Russian province of Volhynia, and, from an allusion which 

 he makes in one of his early papers to a three years' residence in his youth at Dorpat, 

 we conclude that his education was completed at the University of that place. His 

 first paper, published in the Annales de la Societe Entomologique de France in 1835, 

 was written in Dorpat, where he appears to have received some stimulus in his special 

 studies from the inspection of the collection of Eschscholtz, who had recently died. 

 To the first paper just mentioned quickly followed others, published in the " Bulletin 

 de la Societe Imperiale des Naturalistes de Moscou." The first contribution to the 

 Moscou Bulletin which we are able to trace, appeared in 1837, and from that date 

 there is scarcely a volume for upwards of forty years, which does not contain a paper 

 from his pen. He was also a frequent contributor to the " Zeitschrift " of the Entomo- 

 logical Society of Berlin, in which he sometimes wrote in German ; to the "Annales" 

 of the Belgian Entomological Society, as well as the French ; to the "Annali del 

 Museo Civico de Genova ;" the " Revue et Magazin de Zoologie ;" and other publica- 

 tions. In 1844 or 1845, he undertook an Entomological excursion to the Caucasus, 

 taking the Crimea on his way ; the result of which he gave to the world in one of 

 his very few independent works, entitled " Enumeration des Carabiques et Hydro- 

 canthares du Caucase," printed and published at Kieff in 1846. The Hydrocanthares 

 (Dytiscidce) of the work were catalogued and described by Hochhuth, M. de Chaudoir 

 having never, in his long career, permitted his attention to be diverted from the 

 group of Coleoptera to which he became attached in the days of his boyhood. A 

 second independent work was his " Catalogue de la Collection de Cicindeletes de M. 

 le Baron de Chaudoir," published at Brussels in 1865. We are not acquainted with 

 any other, but the separata of many of his more important monographs, published 

 in the Transactions of Societies, were issued as separate volumes, and placed in the 

 hands of booksellers for the benefit of the Entomological public. Such were the 

 " Monographic des Callidides " (204 pp.) ; the " Meruoires sur les Thyreopterides 

 et les Coptoderides " (256 pp.) ; the " Monographic des Chleniens " (315 pp.) ; and 

 others. During the later years of his life, he spent much of his time in Western 

 Europe, and finally took up his residence with his family at Amelie les Bains, in the 

 Pyrenees, where he died. He several times visited England, and, on one occasion, 

 spent many weeks in London, studying the Collyridce of the British Museum col- 

 lection, in preparation for the elaborate Monographic Revision of that Family, which 

 he published in Paris in 1864. 



He was also a frequent visitor to the French Capital, where the chief part of 

 his magnificent collection of Geodephaga was kept for many years, in the house of 

 his life-long friend, M. Auguste Salle, No. 13, Rue Guy-de-la-Brosse. The collection 

 had a narrow escape in the winter of 1870 — 71, a shell from a Prussian battery 

 having exploded in the back yard after traversing the building obliquely from the 

 roof to the first floor. For the number of its type specimens, and probably of its 

 species, this collection was by far the most important of this group which had 

 ever been brought together. It contained the great collection of the Count Dejean, 

 augmented by the Marquis de la Ferte' during the thirty years it remained in the 

 hands of the latter, with the types of the " Spe'cies Generale " of Dejean, the 

 " Patellimanes " of Laferte, and the numerous papers of Gory and Reiche, besides 

 the acquisitions of its possessor through purchase and correspondence during forty 



