EDITORIAL 267 



genus Mditcea, dealing with the distribution of the various 

 species, the origin of the groups, and so forth. Since Mr 

 Wheeler has devoted a good deal of time and thought to 

 this genus of butterflies, anything he has to say on the 

 subject is well worthy of our careful attention. Robert 

 Adkin discourses on " Colzas edusa in Britain," and K. G. 

 Blair on " Luminous Insects." The British Long-horned 

 Grasshoppers are described and tabulated by W. J. Lucas, 

 who also furnishes three photographic plates depicting all 

 the species which have occurred in these islands. Of like 

 interest is a paper by Robert Adkin on " Some Lepidopterous 

 Pupal Habitations and some Reminiscences." The Abstract 

 of Proceedings, filling the latter half of the volume, indicates 

 that the Society is in an active and healthy condition. 



During the past month several interesting entomological 

 articles have appeared. C. Rippon concludes ^ his useful 

 notes on " The Rearing of Larvae " ; Geo. B. Walsh publishes ^ 

 a suggestive article, entitled " Observations on some of 

 the Causes determining the Survival and Extinction of 

 Insects, with special reference to the Coleoptera"; while in 

 the same journal (pp. 233-238) D. Sharp continues his 

 "Studies in Helophorini," which paper should be helpful to 

 our coleopterists. 



W. Williamson and Charles D. Soar have recently 

 published^ an important memoir on Lcbeiiia, a genus of 

 Water-mites. Eleven species are accepted as British, all of 

 which are fully described in the present paper, which is also 

 accompanied by two plates depicting various necessary 

 details. 



' Efitomologist, August 191 5, pp. 186-190. 



2 Ent. Mo. Mag., August 191 5, pp. 225-232. 



3 Joiirn. Quekett Microscopical Club., April 191 5, pp. 479-514- 



