454 FAUNA HAWAIIENSIS 



Four male individuals though very near to O. robustus are evidently distinct, 

 being comparatively broader, with broader head, longer antennae, more sharply 

 marked hind angles to the thorax and more uneven elytra. A single female is no 

 doubt of this species, though of much paler colour, corresponding in this respect with 

 the female of O. robushis. 



Hab. Oahu, mountains near Honolulu, 2000 — 2500 ft. (nos. 43, 76, Perkins). 



(3) Orthostolus gei'manus, sp. nov. 



t Latior, depressus, fere opacus, fuscus, leviter aeneo-micans, marginibus plus 

 minus anguste et vage rufescentibus, antennarum basi pedibusque sordide rufis ; 

 prothorace fortiter transverso, dense punctate, disco quadri-impresso, angulis posteri- 

 oribus argutis, rectis, fere acutis ; elytris sat profunde multi-impressis, striis leviter 

 impressis, obsolete punctatis. % Pallidior, ex parte majori testacea. Long. corp. 6 mm. 



This is another of the very close allies of O. robust its, but though we have only 

 a very small series it is clearly distinct, having the sides of the thorax rather 

 differently shaped so that the hind angles are almost acute: the elytra are differently 

 sculptured, the surface being very uneven and the sculpture of the striae less regular. 

 These characters bring the species nearer to O. itcpos, but the shape of the hind 

 angles of the thorax is sufficiently distinctive. Ten specimens. 



Hab. Molokai. Mountains, 4000 — 4500 ft. ; "above Pelekunu" (no. 173); "highest 

 forest" (no. 155, Perkins). 



(4) Orlkosiolus prostenia/is, sp. nov. 



$ Latior depressus, opacus, fuscus, prothorace ad latera late rufo, antennis 

 pedibusque rufis ; femoribus abdomineque fusco rufis ; prothorace fortiter transverso, 

 dense punctato, disco parum profunde quadri-impresso, angulis posterioribus leviter 

 obtusis ; elytris leviter inaequalibus, subtiliter striato-punctatis ; prosterno processu 

 post coxas latiore, longius ciliato. Long. 6f mm., lat. 2^ mm. 



This is a close ally of O. robusfus, and, though we have only one example I do 

 not hesitate in giving it a name as the prosternal process (PI. XII L fig. 22) exhibits 

 the definite difference mentioned above. It is also broader than O. robustus, and 

 darker in colour than the corresponding sex of that species. 



Hab. Maui, Haleakala, 3000 ft. (no. 772, Perkins). 



(5) OrtJiostolus guttatus. Sharp. 



Brachypeplus guttatus Sharp, Tr. ent. Soc. London, 1881, p. 513. 



Mr. Perkins' collection contains 12 specimens of this species, from Hawaii. It 

 was originally found in Oahu. These original Oahu specimens (now in the British 

 Museum) are mostly large and very light-coloured. The thorax is reddish all over, 



