456 Mr. David Sharp on the 



for in the species said to have a polished thorax a good 

 microscope reveals more or less distinct traces of the 

 alutaceous sculpture, so that the L. oscillans, where the 

 thorax is undoubtedly, though indefinitely, alutaceous, 

 cannot be satisfactorily placed in either of the two 

 groups. 



A fair series of L. oscillans has been obtained at 

 Hakodate. It sometimes exhibits a pallid spot near 

 the extremity of each wing-case, like the European L. 

 bipunctatiis. 



Note. — A specimen of what is apparently a third 

 species of Laccohins has been obtained by Mr. Lewis at 

 Hakodate, but the surface is obscured by a very fine 

 coating of some mineral substance that cannot be re- 

 moved, and that renders its accurate observation im- 

 possible. 



Berosus vestitus. 



Niger, capite superne tlioraceque late In medio senescentibus, hoc 

 ad latera testaceo, aiitennis, palpis, pedibiis elytrisque testaceis his 

 crebre fiisco-irroratis, subtihter strlatis, crebre punctatis, siib- 

 tihterque piibescentilnis. Long. 4 mm. 



Head and thorax closely punctate, the latter with a longitudinal 

 smooth space on the middle. Elytra rather closely punctate, with 

 blackish punctures, each of which bears a fine depressed hair, and 

 with fine striae, which are rather more distinct at the apex than at 

 the base. Mesosternal carina reduced to a raised line running 

 along the middle of the mesosternum ; carina on basal ventral 

 segment distinct and rather elongate. 



Only two individuals have been found of this very 

 distinct little species, one at Bukenji, the other at 

 Niigata in September, 1881. 



Octliehius incrmis. 



Niger, opacus, antennis, palpis pedibusque testaceis ; capite 

 tlioraceque fere impunctatis, illo vorticc trifoA^eolato, hoc posterius 

 fortiter augustato, et membrana pellucida angustissima marginato, 

 medio canaliculato, disco utrinque longitudinaliter inipresso, versus 

 angulos anteriores oblique impresso ; elytris seriatim A'ix regu- 

 lariter punctatis, nudis, interstitiis haud punctatis. Long. 2 mm. 



The labrum is entire ; the thorax becomes a little broader from 

 the front for nearly one-half the length, and is then abruptlj^ nar- 

 rowed, the excised portion being bordered with a very narrow 

 margin of white membrane ; viewed in a certain direction the 



