462 FAUNA HAWAIIENSIS 



slightly rounded in outline. The male pygidium is rather long and narrowed, sub- 

 truncate, slightly rounded ; female pygidium somewhat broader. 



The contrast between the dark colour, and the lighter yellowish area on the 

 posterior part of the elytra, and the small light mark at the base of either elytron near 

 the scutellum, which forms the van dimidiatjts of allied species, is here very marked. 

 The pygidium also is much lighter in its basal and lateral portions. A single male from 

 Waianae differs in being smaller than the other specimens, and in having its elytra and 

 pygidium almost uniformly dark, the light areas being much reduced. Four specimens. 



Hab. Oahu. Waianae mts., over 3000 ft., iv. 1892 (no. 3); Mokuleeia, iv. 1901 

 (no. 752, Perkins). H. S. 



(2) Eupetinus obscuriis, sp. nov. 



Nigricans, prothorace ad angulos testaceo, pedibus antennarumque basi fusco- 

 ferrugineis, crebre punctatus, leviter nitidus. E. insignis affinis, sed pygidio crebrius 

 punctato, et maris segmento terminale baud subtruncato, parum acuminato. Long. 

 Corp. circa 4 mm. ; lat. corp. circa i-g mm. 



This species differs from E. insignis in having the pygidium and last ventral 

 segment coarsely punctuated, and the male supplementary segment somewhat acuminate, 

 rather rounded. It is distinguished from E. subapcr by its generally larger size, by 

 the transverse striation on the interstices of the elytra being much less marked, and 

 the less sharply acuminate male supplementary segment. The male pygidium is 

 truncate with rounded angles, scarcely emarginate in the middle ; female pygidium 

 broader, and rounded. 



Two male specimens show an approach to the diinidiatits form in a slight lightening 

 of colour on the posterior part of the elytra. One female is lighter than all the other 

 specimens, being ferrugineous ; it is perhaps scarcely mature. We have seven specimens. 



Hab. Oahu, Wahiawa, iv. 1901 (nos. 750, and 660, Perkins). H. S. 



(3) Eupetinus derasiis, sp. nov. 



Sat latus et depressus, subopacus, fusco-niger, prothorace pygidioque fusco-testaceis, 

 antennarum basi pedibus sordide testaceis, elytrorum parte apicali (interdum }) late 

 testacea ; prothorace dense obsolete punctato, lateribus rotundatis, angulis posterioribus 

 obtusis ; elytris parum inaequalibus, punctato-striatis punctis parum discretis ; abdomine 

 parce subtiliterque punctato. Long. 4:^, lat. if mm. 



This is one of the larger forms of the genus, and is distinguished by the very 

 obsolete sculpture of the thorax ; this too has strongly rounded sides with very obtuse 

 hind angles. The colour of the elytra is that of the diniidiatus form. We have only 

 one specimen — a male. 



Hab. Kauai, Makaweli, 2500 ft., 11. 1897 ("O- T^l^ Perkins). 



