464 FAUNA HAWAIIENSIS 



This and the forms allied to it are amongst the most difficult of the Hawaiian 

 Coleoptera. I expressed my doubt when describing B. ijiacqiialis as to its proving 

 distinct from B. impressns, and I am now convinced that it is only a pale form — I had 

 only one specimen — in other respects finely developed — it has the two sides of the thorax 

 of different shapes. E. iiupressiis is not only very variable, but is also very closely 

 approached by several other species ; it is indeed so closely connected with various 

 other forms that it might reasonably be considered as giving origin to them. It is 

 distinguished from E. striatus by the less distinct sculpture, which is less dense on the 

 thorax, so that the surface is more shining. The surface of the elytra is very uneven, 

 and the punctuation of the pygidium very slight ; a specimen not exhibiting these 

 characters cannot be named E. miprcssiis. 



Var. diniidiatus, var. nov. A series of about 20 specimens have the basal portion 

 of the elytra dark — nearly or quite black — and the apical portion pale testaceous, the 

 line of division between the two colours being not straight but irregular (Plate XIV. 

 fig. 20). One specimen of this colour variety from Waianae is so aberrant that it may 

 prove to be another species. 



The species varies so much in colour that it is not possible to treat this variety as 

 a species ; especially as a similar variation occurs in several of the other species, though 

 in some cases not in so striking a manner. 



We have altogether about 228 specimens of E. inipressus. 



Hab. Oahu, Maui, Molokai, Kauai. — Oahu ; the great majority of specimens 

 are from this island; mts. near Honolulu, Koolau range, back of Tantalus {pw Piphwus, 

 &c.), Wahiawa ; Waianae mts. 2000 — 3000 ft., a single specimen (no. 670). — Maui ; 

 Jao Valley, West Maui, three specimens (no. 349). — ^Molokai, 4500 ft., one specimen 

 (no. 141). — Kauai: Makaweli, 2500 ft.; Halemanu, 4000 It.; Koholuamano; mts. above 

 Waimea, 4000 ft., from various trees and flowers ot " haha," &c. (nos. 256, 631, 703, 

 &c., Perkins). D. S. 



(6) Eiipetinus hawaiiensis, sp. nov. 



Minus latus et depressus, fuscus, antennarum basi pedibusque fusco-testaceis, elytris 

 inaequalibus, guttis testaceis ornatis, margine laterali auguste explanato ; prothorace 

 fortiter transverse, parum profunde rugoso-punctato ; angulis posterioribus leviter 

 obtusis ; pygidio subtiliter punctato. Long. 3I — 4 mm. ; lat. \\ mm. 



Closely allied to E. wipressus, but larger and darker in colour, with a narrower 

 outstanding margin to the elytra ; the elytra usually darker in colour, but with the 

 yellow spots formed by the elevated parts more definite and distinct : and the thorax a 

 little longer. 



Almost equally close to E. striatus, but with the sculpture of the thorax less dense 

 and rugose, and that of the pygidium finer. The species varies a good deal, but the 

 variation is not similar to that of E. inipressus or of E. striatus. The specimens from 



