54 Mr. G. Lewis on 



VI.— On new Species of Histeridae and Notices of others. 

 By Q. Lewis, F.L.S. 



It is only within very recent years that anything has been 

 known o£ the Coleopterous fauna of Formosa. The first 

 paper on the Histeridpe is in the ' Ent. Mitteilungen ' in 1913, 

 and enumerates 36 species. Since this a collection has been 

 brought to England by Dr. T. Shiraki, bringing the number, 

 with a few others, up to 76, of which some are of special 

 interest in showing the distribution of several genera and 

 species not hitherto included in the Japanese or Chinese 

 faunas. From Japan 70 species have been recorded, but 

 from China proper scarcely more than 20 are known. The 

 present paper will serve as a report on Dr. Shiraki's collec- 

 tion. The most remarkable species in it is the Sternaulax, of 

 which there is a single example only, and which appears to 

 be the New Zealand species ; I should like to see this con- 

 firmed by the capture of more specimens. The Teretriosoma 

 is new and described here, and there is also a new species of 

 Epiechinus. The last genus requires a very careful study, 

 and when made the sterna should be figured, as in them the 

 chief specific characters reside. I have four or five unrecorded 

 species from the Oriental Region, and I think it will be 

 better to treat with them in a separate paper. 



Teretriosoma for mosum, sp. n. 



Oblongum, cylindricum, breve, robustum. nigrum nitidum, undique 

 sat dense punctulatum ; pronoto angulis anticis rufis ; prosterno 

 antice marginato ; mesosterno marginato, aliquanto acute pro- 

 minulo ; tibiis anticis G-dentatis. 



L. 2£ mill. 



Oblong, cylindrical, robust, black and shining, surface 

 somewhat densely and finely punctulate ; the thorax, mar- 

 ginal stria complete, anterior angles distinctly reddish, also 

 the legs and antenna;; the prosternum, anterior edge dis- 

 tinctly marginate ; the mesosternum somewhat acute ante- 

 riorly and also distinctly marginate ; the anterior tibia? are 

 6-dentate on the outer edge, with two small teeth at the tarsal 

 end ; the pygidium is rugose on the posterior portion in the 

 male. 



This species is very similar to T.somerseti, Mars., but it is 

 structurally different in the form of the mesosternum and also 

 in its margin ation. In somerseti the edges are simply elevated 

 and the projection obtuse. 



Uab, Kotosho, Formosa. 



