Dr. M. Burr — Notes on the Forficularia. 51 



y.— Notes on the Forficularia. — XIX. On little-hiown 

 Earwigs from Formosa. By MalcoLM Burr, D.Sc. 



F.E.S., F.Z.S., F.G.S. 



In 1905 and 1907 Professor T. Shiraki, partly in coliabora- 

 tion with Professor S. Matsumura, published four papers on 

 the Dermaptera of Japan and Formosa, describing a number 

 of new species. 



Unfortunately the work is not good, the descriptions often 

 insufficient, and the species witii difficulty recognizable. 



The four papers in question are exceedingly difficult to 

 obtain, and I was unable to find a copy in England. Even- 

 tually a copy was kindly lent me by Mr. A. P. SemenofF- 

 Tian-Shansky, of St. Petersburg, at whose request I reviewed 

 them, and critically discussed them at length in the 'Revue 

 russe d'Entomologie,' pp. 335-340 (1909), and gave my 

 reasons for suggesting affinities for the species described, 

 judging from the often very inadequate and old-fashionod 

 descriptions. This paper was in Russian, but a translation 

 in English appeared in the ' Entomological Record,' 1910, 

 p. 134. 



By good fortune I have received or come across five species 

 from Formosa which I am able to identify with five of 

 Shiraki's species, and it is gratifying to find that in every 

 instance the examination of the specimens confirms the 

 suggestions, which were only based upon the descriptions. 

 These five can therefore be removed from the limbo of 

 doubtful and unrecognizable forms, into which practically all 

 of Shiraki's species had been thrown, and take their proper 

 place in the system. 



EuhorelWa palUpes, Shiraki. 



Shiraki describes a female under the name Am'solabis 

 pa/Upes (Tr. Sapporo N. H. Soc. i. p. 93, fig. 3, 1905/06). 



The description does not tell us mucii, but the figure is 

 suggestive of a large E. sialic on account of the form of the 

 rudimentary elytra. 



In the Munich Museum there is a male from Kusliakn, 

 Formosa, which I refer with no hesitation to this species ; it 

 is a trifle larger, the length of tiie body being 10'5 mm. com- 

 pared with Shiraki's figure of 7*1 mm. for the female. 



It is very closely allied to E. stdli, Dohrn, but the build is 

 slenderer and the punctulation feebler ; the elytra are very 

 narrow at the base, whereas they are practically parallel- 

 sided in E. sidli, Tlie pronotum is a little shorter and 



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