456 FAUNA HAWAIIENSIS 



pale red though it appears to be quite mature. As O. sordidus is a variable species I 

 anticipate that O. expers will prove to be merely a pale variety of it. It comes however 

 from a different island. 



Hab. Maui, Haleakala, under the bark of a tree, 4000 ft. (Blackburn). D. S. 



(8) Orthostolns aij'afus, sp. nov. 



Nigricans, antennis pedibusque sat nigris, parum rufescentibus, abdominis seg- 

 mentorum marginibus posterioribus rufescentibus ; crebre punctatus, parum dense 

 pubescens ; prothorace fortiter transverso, angulis anterioribus parum rotundis, posteriori- 

 bus argutis, disco quadri-impresso; elytris obsolete impressis, sulcis argutis impunctatis, 

 ad latera evidenter explanatis, marginibus posterioribus curvatis, basi guttis fusco-rufis ; 

 Long. Corp. 4^!; — 5^ mm. ; lat. corp. i| — 2^ mm. 



This species is darker than O. sordidus, and has blacker antennae and legs ; also 

 the supplementary segment in the male differs, being rounded, not acuminate as in 

 O. sordidus. The $ pygidium is somewhat concave in outline at the sides, narrow and 

 rounded at the extremity ; the $ pygidium tapers more than that of the female, and is 

 slightly truncate. 



A single female from Maui differs from the rest in being distinctly shining and in 

 having scarcely any pubescence. The depressions on the prothorax and elytra are more 

 marked, and there are slight depressions on the abdomen. 



The male from Hawaii is the smallest of all the specimens but in other respects 

 agrees with them. Seven specimens. 



Hab. Maui, Molokai, Hawaii.- — Maui, Haleakala 4500 — 5000 ft., under bark 

 (nos. 366, 116). — Molokai, Waikolu (no. 234). — Hawaii, Kilauea, no. 656. (Perkins.) 

 H. S. 



(9) Ortliostolus kauaieiisis, sp. nov. 



O. sordidi peraffinis, sed maris pygidio rotundiore minusque impresso, prosterno 

 processu vix minus expanso, prothorace parum majori. Maris segmentum terminale 

 acuminatum. Fuscus ; prothoracis abdominisque marginibus, antennarumque basi 

 testaceis, elytrorum basi rufescente, pedibus fusco-testaceis. Long. corp. 5 mm. 



A single male from Kauai differs from O. sordidus in the characters given above. 

 The supplementary segment appears less sharply acuminate than those of the males of 

 O. sordidus. 



Hab. Kauai, mts. Waimea, under Koa bark, 4000 ft., v. 1894 (no. 257, Perkins). 

 H. S. 



