592 



then roundly narrowed and . distinctly constricted at the apex ; the dorsal 

 apical margin truncate, the basal margin impressed and with a transverse 

 row of punctures ; the entire upper surface fairly evenly set with large 

 deep separated punctures and without any smooth median line; laterally 

 the punctures are larger and much more crowded in the anterior half, but 

 very sparse in the smooth basal impression for the reception of the 

 anterior femora. Eli/tra scarcely dilated behind the base and then rapidly 

 narrowing to the broadly rounded apex, the sides being almost straight; 

 the basal margin elevated, subtruncate, but curving slightly forwards at 

 the external angles ; the complete regular rows of deep spaced punctures 

 all more or less shallowly striate, the spaces between the punctures being 

 as long or longer than the punctures themselves, and a basal puncture in 

 each row much larger than the rest; intervals 1, 2 and 5 each with a 

 complete row of punctures, the other dorsal intervals with only a few 

 punctures towards the base; the posterior declivity rather longer and less 

 steep than in T. suhmetalUcus. Legs clothed with rather stout white 

 setae, and the posterior pairs of femora with a row of elongate white 

 scales along the dorsal edge; the femora not toothed, with irregular rows 

 of deep punctures from base to apex, the apical punctures much longer 

 and more or less confluent. Length, 4 mm. ; breadth, 1.8 mm. 



Habitat.— Tutuila Island: One male, 2141 feet, 22, IX, 1918 

 (Dr. H. C. Kellers). 



Type in the collection of the Hawaiian Sugar Planters' 

 Experiment Station. T^pe No. 1029. 



Trigonopterus bicolor sp. n. 



Male and female. Color shining black, the elytra chestnut-brown, with 

 the apex blackish; devoid of scaling or appreciable setae. Head impunc- 

 tate on the vertex, closely punctate in front and confluently so on the 

 forehead; a deep narrow furrow above the eye. JRostrum (male) with 

 the usual five carinae extending almost to the apex, the three dorsal ones 

 about equal in width, the apical area rather uneven Init scarcely punctate; 

 the setae inconspicuous, very short and recumbent; in the female the 

 dorsal carinae cease behind the middle, the apical portion being strongly 

 punctate, with a broad inipunctate median stripe in its basal half. Pro- 

 thorax almost as long as broad, gradually narrowed from base to apex, 

 the sides gently rounded and not constricted at the apex; the basal 

 margin impressed and with a transverse row of punctures, the apical 

 dorsal margin distinctly arcuate; the whole upper surface with widely 

 spread strong punctures, which are rather less dense towards the sides 

 and base; the lateral punctures similar to those on the disk. Eh/tra 

 elongate, the sides slightly rounded close to the base, then rapidly nar- 

 rowed to the produced and broadly rounded apex; the basal margin 

 truncate and slightly raised; the rows of punctures scarcely striate except 

 towards the apex, rows of seven and eight uniting in the basal half to form 



