478 Mr. G. Lewis on 



Lamperos cordicolUsj Mars. (PI. XIII. fig. 11.) 

 Helops cordicollis, Mars. Ann. Fr. 1876, p. 141. 



Allard founded the subgenus Lamperos (Mitth. Schwelz. 

 ent. Ges. 1880, vol. v. p. 57) to receive Helops brunneuSj 

 Mars., and four other species. //. cordicollis, Mars., varies 

 in colour from brassy green to black, and the intermediate 

 tibiai are curiously denticulate on the inner edge in the male. 

 There is a reference to Lamperos also in the ' Abeille,' 1876, 

 Eev. Helop. vrais, p. 6. 



Hab. Yuyama, Nagasaki, Kobe (on Maiyasan), Oyama, 

 and Kadzusa. 



Lamperos elegantulus, sp. n. 



Parum elongatus, seneus vel viridis, nitidus ; elytris striatis, striis 

 tenuissime crenulatis ; antennis pedibusque lajte rufis vel obscure 

 brunneis. 



L. 7-9 mill. 



Rather elongate, aeneous or bluish green, shining ; the head 

 densely punctulate, eyes prominent, narrowly reddish over 

 the antennas; the thorax, punctures much less closely set 

 than those of the head, especially in the female, arched at 

 the sides, with a narrow lateral rim, rim and narrow anterior 

 border reddish ; the elytra striate, strise obscurely crenulate. 

 Male : mouth-organs, antennaj, and legs clear red ; tibiie 

 not bent, fore tibiae angulate at the tarsal end. Female 

 more robust than the male, and the antennas and legs dull 

 brown or pitchy red. 



This elegant little species somewhat resembles L. cordi- 

 collis, but the thorax is arched not cordiform, the inter- 

 mediate tibiae in the male are not denticulate. In L. cordi- 

 collis the anterior tibial of the male are rounded off on the 

 outer edge at the tarsal end. 



Ilab. Hakone, Miyanoshita, Nikko, and Kashiwagi. 

 Seven examples. 



Plesiophthalmus nigrocyaneus, Motsch. 



P. (snnts, Motscli. ; P. nif/ritus, Motsch. ; P. (tmscens, Mars. ; P. serici- 

 fruns, Mars. ; and P. ylabricoUis, Lew., in litt. 



This species is exceedingly variable in colour and also in 

 sculpture, and I believe all the above names refer to one. 

 The colours of the upper surface vary from black to dark 

 blue, or from brassy to greenish bronze, and the legs are 

 usually black or reddish brown, but I have examples with 

 bright red legs. The female usually has the thorax more dis- 

 tinctly ])uncturcd than the nuile ; P. (jlabricollis is a female 



