2 6o FAUNA HAWAIIENSIS 



median channel is indistinct, tlie base is punctate ; the sides are rounded and much 

 narrowed behind, sinuate so that there is a short basal constricted portion with rect- 

 angular angles. The striation of the elytra is fine, and the punctures, though quite 

 distinct on the anterior parts, are also fine. Many examples. 

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



(8) Thriscothorax molokaiae, sp. nov. 



Conve.xiusculus, nitidus, nigricans, antennarum basi, palpis pedibusque flavis, 

 antennis extrorsum rufo-obscuris ; prothorace lato, lateribus rotundatis, basin versus 

 fortiter angustato, basi constricta, angusta, angulis posterioribus rectis ; elytris convexius- 

 culis, breviter ovalibus, subaenescentibus, apice testaceo, marginibus parum conspicue 

 testaceis, profunde striatis, striis subpunctatis. Long. 3^ mm. 



Head rather narrow. Thorax shining black, only slightly paler at the lateral 

 margin, which is fine ; the strongly rounded sides are much narrowed behind, so that 

 the base is narrow ; the base punctate, the median channel very distinct, the anterior 

 impression less definite. The elytra rather short and convex, shining, with a feeble 

 brassy reflection, deeply striate, the striae a little fainter at the extreme base, the outer 

 two striae very fine, the others distinct at the apex, the punctuation fine : the tip yellow, 

 and this colour extends a good way forwards along the suture and sides. Legs pale 

 yellow. Four specimens. 



Hab. Molokai, 4000 ft., 15 June, 1893 (Perkins). 



(9) Thriscothorax pcrstriatns, sp. nov. 



Augustus, convexiusculus, nitidus, nigricans, antennis rufis, basi, palpis pedibusque 

 flavis ; prothorace lato, lateribus rotundatis, basin versus angustato, basi constricta, 

 angulis posterioribus rectis ; elytris convexiusculis, subaenescentibus, apice testaceo, 

 margine anguste testaceo, profunde striatis, striis a basi ad apicem ductis, plus minusve 

 punctatis. Long. 4 mm. 



Plate Vn. fig. 8. 



Though very like T. molokaiae this species is more elongate, and has the base of 

 the thorax broader, the striation of the elytra is very deep, even at the basal margin 

 each stria is deep and distinct, and all the eight striae are easily seen on each wing-case. 

 There is but little punctuation at the base of the thorax. 



In this species and in T. molokaiae, the under surface is to a large extent yellow, 

 the ventral segments being entirely yellow in T. perstriatiis. I have seen only a small 

 series of each and though both appear to be variable 1 think them distinct. I am indeed 

 more doubtful whether the specimens in each case may not be more than one, but the 

 e.xamples are too few in number to enable me to form any decided opinion. 



Hab. Maui. 



