XXXVl 



George Egbert Crotch, who was elected a member of this 

 Society in 1865, died at Philadelphia, while yet in the prime of 

 life, on the 16th June, 1874, aged thirty-three. As an authority 

 among Coleopterists he had long occupied an eminent position. 

 Of the Coleoptera belonging to the British Fauna he published a 

 new arrangement in 1863, followed by a revised edition in 1866. 

 To our Transactions for the year 1870 he contributed two papers 

 of laborious research on " The Genera of Coleoptera treated 

 Chronologically;" the first (1735 — 1801) commencing with the 

 earliest edition of the * Systema Naturae;' the second (1802 — 21) 

 embracing the period of Latreille, giving as far as possible 

 the types of all the genera proposed within the respective 

 periods, with synonyms when required. This was followed by a 

 more elaborate list (in 1871) of all the Coleoptera belonging to 

 the primary section Adephaga, described from 1758 to 1821, with 

 references to their modern genera. After treating of several other 

 groups, Mr. Crotch left this country for the United States, in the 

 autumn of 1872, where various memoirs by him on different sections 

 of North American Coleoptera were published by the Academy of 

 Natural Sciences of Philadelphia, and by the American Entomo- 

 logical Society. He subsequently extended his researches to 

 some of the least visited parts of the North American continent, 

 from whence he returned in broken health to Philadelj)hia, — the 

 result of climatic influences, to which he eventually succumbed. 

 A ' Revision of the Coleopterous Family Coccinellidae,' which 

 he had prepared for publication, has recently issued from the 

 London press. 



Francis Walker, one of our most indefatigable Entomologists, 

 who was elected a member of this Society in 1850, and whose 

 numerous publications attest his incomparable zeal and assiduity, 

 died on the 5th October, 1874, in his sixty-sixth year. His 



* Monographia Chalciditum' was commenced at an early period of 

 his life (1832) in the first pages of the 'Entomological Magazine ;' 

 and he ever afterwards maintained his predilections for this very 

 remarkable parasitic tribe. His second important work was the 



* Insecta Britannica, Diptera,' in three octavo volumes, published 

 from 1851 to 1856. Antecedent to and concurrent with this, and 

 long subsequent thereto, he devoted a considerable portion of his 

 time and attention to the compilation of an extensive series of 

 Catalogues of various orders of insects in the National Museum, 



