591 



where the setae are longer, scale-like and directed backwards; in the 

 female the three dorsal carinae disappear behind the middle, the anterior 

 half being bare and shiny, with a double median row of fine punctures 

 and a deep lateral stria on each side. Prothorax a little broader than 

 long, broadest at the base, with the sides almost straight and gradually- 

 narrowing for four-fifths of its length, then narrowing more rapidly to 

 the apex, but not constricted; the dorsal apical margin very slightly 

 arcuate, the basal margin without any transverse row of punctures; the 

 dorsal punctures very fine and widely spaced, but becoming larger towards 

 the front margin; laterally the punctures are very large and coarse in 

 the front half, and fine and sparse behind. Elytra rather elongate (3:2), 

 very slightly widening for a short distance behind the base and then 

 rather rapidly narrowing to the apex, the sides being almost straight; 

 the apex broadly subtruncate, with the external angles rounded; the 

 surface practically impunctate except along the base, lateral margin and 

 the apex, but sometimes with faint traces of rows of minute punctures; 

 at the base a transverse row of large single punctures, which is continued 

 along the lateral margin (but the punctures are here much smaller and 

 shallow) and becomes a punctate stria at the apex; the whole apical area 

 rugosely punctato-striate, each puncture containing a minute pale seta; 

 dorsal outline continuous with that of the pronotum, deepest near the 

 base, thence sloping (by no means steeply) to the apex. Legs sparsely 

 clothed with short white setae, but no scales; femora not toothed, coarsely 

 punctato-striate on the distal half, sparsely and finely punctate towards 

 the base. Length, 3.25-4 mm.; breadth, 1.4-1.8 mm. 



Habitat.— Tutiiila Island: 1000 feet, Mil, 1918 (Dr. H. C. 

 Kellers). 



Type in the British Museum ; cotypes in the collection of 

 the Hawaiian Sugar Planters' Experiment Station. 



Described from nine males and three females. 



Trigonopterus binotatus sp. u. 



Head, prothorax and legs black ; elytra, mesosternum and metasternum 

 chestnut-brown, the base and apex of the elytra blackish; on each elytron 

 a small elongate patch of dense white scales at the apex, lying between 

 striae 3 and 6, and recumbent white setae in each of the punctures in 

 the apical fourth of the external stria. 



Male. Head with strong separated punctures, which are much larger 

 and confluent on the forehead, which bears suberect white setae; a narrow 

 furrow above each eye. Rostrum with three dorsal carinae extending for 

 three-fourths of its length (the median one much broader than the other 

 two) and a lateral carina forming the upper edge of the scrobe; the 

 furrows betwen the carinae shallowly and confluently punctate, and the 

 apical area with very large shallow punctures. Prothorax a little broader 

 than long, with the sides subparallel for about one-third from the base, 



