264 FAUNA HAWAIIENSIS 



(17) Thriscothorax c/ialcostts, sp. nov. 



Rufus, supra piceus, aeneo-micans, antennis, palpis pedibusque flavis ; thorace 

 transverse, lateribus rotundatis, posterius breviter constricto ; elytris sat profunde 

 striatis, striis obsolete punctatis. Long. 4^ mm. 



Perhaps nearest to T. /actus, but of brassy colour above, and with much more 

 deeply striate wing-cases. Differs from T. laticollis and its allies by the smaller thorax, 

 with a much narrower base. Head moderately broad. Thorax much narrower than 

 the elytra, much rounded at the sides, and with a short constricted basal portion ; 

 hind angles rectangular ; the side margin strongly elevated, the anterior impression 

 definite, the median channel deep, the base with some coarse punctures, and on each 

 side deeply depressed. Elytra rather strongly rounded at the shoulders, shining, brassy, 

 but the suture behind, the tip and even the lateral margin, paler red than the rest ; 

 each with eight striae, beginning quite at the base, where they are deep and are 

 feebly punctate, at the tip only moderately deep, the outer two striae quite distinct 

 though not so deep as the others. Legs clear yellow. One specimen only. 



Hab. Maui. West Maui mountains (Perkins). 



(18) Thriscothorax apicalis, sp. nov. 



Niger, parum convexus, sat niticlus, antennis, palpis pedibusque flavis, elytrorum 

 apice discrete sed baud late testaceo ; prothorace transverso, lateribus leniter rotun- 

 datis, basi baud constricta sed angulis posterioribus minute rectis ; elytris septem- 

 striatis, striis ad apicem profundis, sed externis anterius obsoletis. Long. 4 mm. 



Plate VII. fig. 12. 



A rather short insect with the upper surface a little flattened ; to be recognised 

 by the well-marked but impunctate striae, and the form of the thorax, which, though 

 gently rounded at the sides and somewhat narrowed behind, so that the base though 

 rather broad is narrower than the front, yet has not any distinct constricted portion, the 

 hind angles being nevertheless exactly rectangular, though if a very minute section be 

 taken off the base the angles would be obtuse : the lateral margin is very fine and only 

 at the base is it minutely thicker ; the base is straight, rather broad, distinctly punctate 

 and slightly strigose, the anterior impression and the median channel are quite de- 

 finite, indeed rather deep. The elytra are but little rounded at the shoulders, with 

 the striae fine, though distinct at the apex, not punctate ; the legs are rather short. 



We have a small series of this species, 25 specimens. It does not vary much 

 and a good deal resembles Mecyclothorax rusticits and micans. 



Hab. Maui. Haleakala, 10,000 ft., April 1894 (Perkins). 



