COLEOPTERA 453 



female is of a dusky testaceous colour, with darker spots on the dorsum of the abdomen ; 

 these spots are variable in size, and when most extended coalesce so as to make the 

 middle of this part of the abdomen darker than the sides. These specimens therefore 

 approach somewhat to the male in colour. There is also a slight variation in the 

 depressions on the thorax. The elytra have several small indistinct depressions 

 sufficiently evident to make them appear a little uneven. The original diagnosis is 

 as follows : "Sat latus et elongatus, subparallelus, depressus, fere opacus, testaceus sed 

 plus minusve infuscatus, leviter aeneo-micans, antennis fuscis basi testaceo ; capite pone 

 oculos mediocres obliquo, crebre fortiter punctato ; prothorace fortiter transverso, anterius 

 leviter emarginato, angulis posterioribus fere rectis, fortiter crebre punctato, disco obsolete 

 tri-imjDresso ; elytris opacis, coriaceis, conspicue seriatim punctatis, interstitiis latis, haud 

 punctatis, angulo suturali recto ; abdomine dense punctato. Long. 6 mm. lat. 2 mm." 



The species is found occasionally in numbers about trees on the mountains near 

 Honolulu, but we have not received it from any other locality, except that certain 

 specimens from the island of Lanai appear not to be constantly different (see van 

 laiiaicnsis below). 



H.\B. Oahu. Mountains near Honolulu (Blackburn). Mountains near Honolulu, 

 under bark with larvae, 27. x. 1S92 (no. 76, 5 specimens) : Mokuleia, v. 1901 (nO. 752, 

 3 specimens) : Waialua, ix. 1900 (no. 763, i specimen) : Pipturus back of Tantalus, vii. 

 and WW. 1900 (nos. 785 and 7S6, 43 specimens): Honolulu (without date or exact 

 locality): (nos. 789 and 901, 232 specimens) (Perkins). 



Orthostolus robustiis var. lanaiensis, var. nov. 



O. robusti affinis paulo major praesertim latior, impressionibus thoracis et elytrorum 

 minus obsoletis. Long, fere 7 mm., lat. 2^ mm. 



A small series of 16 specimens from the island of Lanai might be distinguished 

 by the above characters from O. robiisius of Oahu, were it not that the slight characters 

 are variable, and one of the Lanai females cannot be satisfactorily distinguished from 

 certain examples of the same sex from Honolulu. 



We have examined the aedeagus of the male and find a slight distinction in it as 

 compared with Honolulu specimens, but whether this is a constant character we cannot 

 say, and the difference is only slight. 



Hab. Lanai. Mountains, 2000 — 3000 ft., Halepaakai, Koele, etc. (nos. 80, 93, 

 etc., Perkins). 



(2) Orthostolus ncpos, sp. nov. 



$ Latior, depressus, fere opacus, fusco-testaceus, leviter aeneo-micans, antennis 



pedibusque sordide testaceis; prothorace fortiter transverso, dense punctato, disco tri- 



vel quadri-impresso, angulis posterioribus argutis, leviter obtusis, fere rectis; elytris 



inaequalibus, striis latis leviter impressis obsolete punctatis. Long. 7 mm. lat. 2^ mm. 



