MO [J"ne, 



The Rev. Gr. Wheeler explained that he had been mistaken in some of his 

 observations on Argynnis auresiana, which he exhibited on October 16th, as he 

 had lately heard from Mr. Powell. The name auresiana was given by Friihstorfer 

 not by Oberthiir, and a few specimens were already known before Mr. Powell 

 discovered it in numbers at Lambessa as previously stated. It had also been 

 figured by Turati. Mr. E. Ernest Green exhibited cards showing the transferred 

 wing-scales of butterflies. Mr. Donisthorpe, a specimen of Tetramorium 

 csespitum, L., ^ , from a colony found by Mr. Evans on the Bass Eock in Scotland, 

 March 21st, 1913 ; the most northern records known in Britain were Denbigh in 

 Wales, and Cambridgeshire and Suffolk in England. Mr. W. C. Crawley, 

 numerous species, sub-species, etc., of ants from Egypt, which were taken at 

 Helouan during December and Janiiary last. Dr. K. Jordan gave a short accoimt 

 of the ninth International Congress of Zoology at Monaco, with special refei-ence 

 to the qiiestion of Entomological Nomenclatvire, after which tlianks were voted 

 to the Society's Delegates for their work at the Congress, and to Dr. Jordan in 

 particular for his interesting and satisfactory account of it. The following 

 papers were read : — " On the classification of British Crab ronidas {Hymenoptera)," 

 by R. C. L. Perkins, D.Sc, M.A., F.L.S. " Descriptions of new species of t)ie 

 Syrphid genus Callicera (Diptera)," by the late G. H. Verrall, F.E.S. Edited 

 by J. E. Collin, F.E.S. " Neue Pyrgotinen ausdem British Museum in London," 

 Von Friedrich Hendel, Wien. 



HELP-NOTES TOWARDS THE DETERMINATION OF BRITISH 



TENTHREDINID^, &c. (31.) 



BY THE REV. F. D. MOBICE, M.A., F.E.S. 



CIMBEX. Ol. LOPHYBUS, Latr. MONOCTENUS, Htg. 

 In iny last paj)er I commenced discussion of the British 

 Tenihredopsis spp., but had to confess myself unable as yet to 

 tabulate them. As I have hopes of gaining some new light on the 

 subject from a work by Dr. Enslin which should appear in the course 

 of this year, I think it best to postpone any further remarks on 

 Tenthredopsis, and to " intercalate " here a paper dealing with two 

 genera (Cimhex and Lophyrus) which I was not prepared to discuss 

 in their proper places, and also with a genus, closely allied to Lophyrus 

 (viz., Monocteiuis, Htg.) of whose existence in this country I only 

 became awai'e this winter, and which is an interesting addition to the 

 British List. 



CiMBEX. 



Although this genus contains very few European species, all 

 of which embrace large and striking forms, separable (as might 

 naturally be supposed on a first acquaintance with them) by strongly 

 marked dittereuces both of colour and structure, it is really a very 



