HEMIPTERA. 



305 



the Sumatran parrhasius, as Kheil gives no indication to show that 

 this form from the little island of Nias, off the west coast of 

 Sumatra, differs from other oriental forms of that species. The 

 following is Kheil's note thereon : — 



Plebeius polysperchinus, Kheil, " Ehop. of Nias Island," p. 29 (1884). 

 — Plebeiua poly.'iperchimts, approaching the European P. poly-fperchon, hut larger and 

 bluer in colour. The fringes are white, with grey divisional lines; the edges are 

 black (Kheil). 



As ah'cady pointed out, besides the difference in the general 

 character, appearance, and build of jiarrhasins and anjiades, the spot- 

 ting of the underside of the hindwing differs in the two species, and 

 the ancillary appendages of the 3 has been shown by Chapman to be 

 entirely different, and to separate the species very considerably. 



Our study of the British butterflies seems to be leading us very 

 far, and it would appear that our old assertion, that ahnost every 

 British species is the representative of a distinct and interesting group, 

 highly specialised elsewhere, is not only proving correct, but is leading 

 us to call on our collaborators to help us to undertake a revision of 

 these groups, before we can really begin to understand the details bearing 

 on the relationship of our few British species to one another. We have 

 already been able to show that Lampides hoeticns stands nearly alone 

 in the world's fauna, and that the species tacked on to it generically 

 by systematists have really no close relationship, whilst Dr. Chapman 

 has, by the study of Celastrina ari/ialiis, revolutionised our knowledge of 

 the Celastrinids most closely allied thereto, proving that apparently 

 distinct species are only forms of our common insect, and now he is 

 able to show, on structural grounds, that E ceres alcetas, Hoff'mansegg, 

 and FJ. dipont, Moore are quite specifically distinct from E. ari/iades 

 and that jicirrha.vtts is sufficiently so to require a new genus, in a tribe, 

 where the species are so nearly aUied structurally, as is the case in the 

 tribe Everidi. 



®RTHOPTERA. 



Note ox Labia minor, L. — I found a few examples of this little 

 earwig on the wing last month, near the village of Winlaton, and 

 to-day, whilst examining a manure heap in Aswell Park for coleoptera, 

 Professor Beare and I have turned it up in large numbers. I was 

 struck with the peculiar superficial resemblance to L. minor of a rather 

 common beetle, Lithocharis ochracea, found with the earwig. — 

 Richard S. Bagnall, F.E.S., The Groves, Winlaton. November 1st, 

 1908. 



^EMIPTERA. 



Cryptostemma alienum, H.-S., from the County of Durham. — 

 This fragile creature occurs commonly amongst shingle by the banks 

 of the Tarset Burr, at Tarset, on the North Tyne, Northumberland, 

 ■ and also on the banks of the Derwent, near Winlaton Mill, in the 

 county of Durham. Cryptostemmo [Dipsocoris) alienum has been taken 

 on the banks of the river Till by Hardy (Bold, Xat. Hist. Trans. 

 Xorthnmberlaiid and Durliam, iv., 1872, p. 363), but has not been 

 previously recorded from the county of Durham. — Richard S. 

 Bagnall, F.E.S., Winlaton. November 1st, 1908. 



