191&I 163 



been deferred till now. After some days of quiescence the third and last 

 ecdysis occurs, disclosing the pupa. Pupation takes place within the puparium 

 of the host, and the adults emerge after 12 — 18 days. At least two generations 

 are produced in the year. Larvae which enter puparia in autumn remain in 

 the first stage till April or May, the adults appearing in May or June ; while 

 the adults of the second generation emerge in August or September. The 

 adults feed with great voracity on living maggots of Choi'tophila. They 

 excavate passages in the soil and are to a slight extent gregarious. 



[P.S, — Since the above was in print, I have received a paper by A. Gibson 

 and K. C. Treherne on " The Cabbage Eoot Maggot and its control in Canada " 

 (Dominion Dept. of Agricvilture, Ent. Bulletin No. 12, 1916). On pp. 52, 53 it 

 is stated that an allied Staphylinid, Baryodma ontarionis Casey (previously 

 referred to Aleochara nitida), is a most useful and active parasite of the fly, 

 from the puparia of which it is bred. Its life-history is not described in detail. 

 It is figiu'ed on p. 52.] 



^bituarg. 



Frederick Enoch. — We greatly regret having to announce the death of 

 Frederick Enock, which took place at Hastings on May 26th. Mr. Enock was 

 born in Birmingham on April 17th, 1845. At an early age he took great interest 

 in natural history, and when a boy collected Lepidoptera. He was educated at 

 Ackworth School in Yorkshire. His uncle, Edmund Wheeler, who was a 

 mounter of objects for the microscope, as well as a lecturer, occasionally lectured 

 at this school and took notice of him. At a later period, when he wanted 

 assistance, he asked his nephew to come to London. Enock then left Birmingham, 

 where he was employed as an engineer's draxightsman (he had served his time 

 in the " fitting shop "), being glad to follow his natural taste for science. After 

 mounting objects for the microscope under his vincle's guidance for some years, 

 he stai'ted on his own account, the beauty of his preparations making his name 

 become a household word among microscopists. In 1872, a specimen of one of 

 the Mijmaridae was exhibited by Mr Fitch at a meeting of the Quekett Micro- 

 scopical Club. The great beauty of this object so impressed Enock that he 

 forthwith began collecting and mounting them for the microscope, and it was 

 while thus engaged that he conceived the idea of writing a monograph of the 

 family. This he kept in view for the last thirty years, taking photo-micrographs 

 of all the species, and in the diificvilt genera, of every specimen so far as he was 

 able, as it is practically impossible to compare and identify them in any other 

 way. These photographs he exhibited on more than one occasion at the Eoyal 

 Society. In 1909, descriptions of the eight new genera that he had discovered 

 were published in the " Transactions of the Entomological Society of London," 

 Since then most of the new species, some 150 in niunber, have had manuscript 

 names attached to them, and descriptions of them written. It is earnestly 

 hoped that his death will not prevent the piiblication of these, together with 

 reproductions of the necessary photographs. 



O 2 



