138 THE entomologist's becord. 



species of parasitic tracheates. Notwithstanding this fact, eveh the 

 casual observer must notice the repeated recurrence in widely different 

 orders of similar morphological details. While there is no general 

 uniformity, many Epizoa exhibit points of remarkable resemblance. 

 This agreement in certain characters may be likened to the colour 

 similarity found in cave insects, or to the resemblance of certain 

 marine animals to fish, or of subterranean lizards {Amj}hisbae?ia) to 

 earthworms and snakes. In fact, parasites show that a similarity of 

 surroundings is frequently accompanied by, or associated with, a 

 certain amount of agreement in structure and colour." The body of 

 the address is a short survey of the facts generalised in the above 

 statements and illustrated by numerous diagrams of structural 

 modifications. 



It is intended to erect a bas-relief, with suitable inscription, in the 

 Natural History Museum, South Kensington, to the memory of the 

 late Captain F. C. Selous, D.S.O., as a memorial of his services to 

 the Empire as a naturalist and explorer. A Committee has been 

 formed, of which C. E. Fagan, Esq., Natural History Museum, 

 Cromwell Road, London, S.W. 7, is Hon. Secretary, and to whom 

 donations may be sent. A comprehensive list of names has been 

 issued as members of the Committee. 



The weather was most favourable for the Congress of the South- 

 Eastern Union of Scientific Societies held in London from June 6th 

 to June 9th inclusive, and the attendance was very good indeed, all 

 the items in the programme having been carried out admirably. There 

 is now a well-established Botanical Section of the Union, and it is 

 hoped that in the near future there will also be a Zoological Section 

 established. When things settle down after the war one would like 

 to see definite work undertaken throughout the year by different 

 sections, and that in the near future there may be separate meetings 

 and papers devoted to the objects of each, i.e., that the work may be 

 intensive, rather than extensive with a tendency to a bias in one 

 direction only as at present. 



SOCIETIES. 



The South London Entomological and Natural History Society. 



April 12th, 1917. — Danainb models. — Mr. Edwards exhibited 

 soecies of the genera Nectaria and Hestia, highly protected butterflies, 

 and referred to their numerous mimics. 



Lyc^nid aberrations. — Mr. B. W. Adkin, numerous aberrations 

 of Agriades thetis and A. coridon taken at Eastbourne in September, 

 1916. Remarks were made as to the persistence of small local 

 aberrations. 



Interesting Literary items of Natural History. — Mr. Hy. J. 

 Turner, a book bought from a street barrow, Tlie Aye-aye, by Sir 

 Richard Owen inscribed " To P.B. du Chaillu from his friend and 

 well-wisher Richd. Owen " ; and a post-card illustrating a Fowling 

 Scene from the wall of a tomb at Thebes, b.c. 1500, on which were 

 pourtrayed five figures of butterflies. 



PsyoBiDS,-^He also showed a photograph of the cases of the more 



