COLEOPTERA 261 



(10) Thriscothoyax lunndaiiiis, sp. nov. 



Latiusculus, paruni convexus, nitidus, piceus, limbo, antennis, palpis pedibusque 

 flavis ; prothorace fortiter transverse, lateribus rotundatis, basi constricta, angulis poste- 

 rioribus rectis ; elytris brevibus, rotundatis, quinque-striatis, striis ad apicem evanescenti- 

 bus, ad basin punctatis, externis obsoletis. Long. 4^ mm. 



This species is very different from T. filipcs, and is nearer to T. nticfits. It is 

 distinguishable from the former by the broadly oval elytra with extremely rounded 

 shoulders, and by the punctate striae. The thorax is like that of T. uncUis, short, 

 strongly rounded at the sides so as to be much narrowed behind, with a very short 

 straight-sided basal portion and sharply rectangular hind angles. The broad elytra are 

 a little convex, with pale margins and suture ; each has five striae and traces of a sixth ; 

 these striae are distinctly punctate at the tip and all, except the sutural one, become more 

 indistinct behind ; the second one is however quite definite at the tip, and the others 

 can be traced there. The only two specimens found are rather immature, and the 

 colour is probably less deep than in mature examples. 



Hab. Lanai. On the summit, July 1S94. 



(11) Thriscothorax constrictiis, sp. nov. 



Robustus, haud latus, nigricans, supra subaenescens, elytrorum thoracisque mar- 

 ginibus, antennarum basi, palpis pedibusque testaceis ; prothorace lato, lateribus rotun- 

 datis, basin versus abrupte angustatis, basi constricta, angulis posterioribus rectis ; elytris 

 octo-striatis, striis impunctatis, ad apicem sat discretis. Long. ^\ mm. 



Plate VIL fig. 9. 



A very distinct species. The transverse thorax is abrupdy narrowed behind, with 

 a short basal constricted part, the sides of which are upturned ; the surface is not 

 polished, the disc is slightly wrinkled transversely, and along the anterior impression 

 there are many fine longitudinal striae ; the median channel is distinct but there is very 

 litde sculpture at the base. The elytra are elongate, the disc subaeneous, the sides 

 broadly flavescent, the suture also yellow ; the fine striae extend from the base to the 

 apex and are not punctate. Two specimens. 



Hau. Molokai. 4500 ft., June 1S93 (Perkins). 



(12) Thriscothorax insolitits, sp. nov. 



Convexus, niger, politus, elytris ad apicem et ad latera late testaceis, antennis palpis 

 pedibusque flavis ; prothorace angusto, convexo, lateribus leniter rotundatis, angulis 

 posterioribus brevissime rectis ; elytris convexis, brevissime quadristriatis, striis punc- 

 tatis. Long. 4^ mm. 



Plate VII. fig. 10. 



