18, 4 Fisher: New Coleoptera from the Philippines 415 
Sambus luzonicus sp. nov. 
Short, nearly parallel, head bright cupreous, pronotum black, 
with a distinct violaceous reflection; elytra black, basal half 
irregularly marked with white pubescence, and a transverse 
band of four rings of white pubescence at apical fourth; be- 
neath shining black, sparsely clothed with very short white 
pubescence. 
Head flat in front, rather deeply grooved on the vertex and 
occiput, surface strongly, transversely rugose, with a few very 
short white hairs along the anterior margin; antenne short, 
reaching to apical third of pronotum, basal joints coppery, 
following joints shining black; clypeal suture distinct; epistoma 
Wide, transverse between the antenne. Pronotum much wider 
than long, about as wide in front as behind; sides flattened and 
regularly arcuate, with the lateral margin crenulate; anterior 
margin bisinuate, with the median lobe broadly rounded; base 
bisinuate, with a broad median lobe in front of scutellum; 
lateral carina slightly arcuate, reaching from posterior angles 
perpendicularly to the middle; disk convex, limited behind at 
the basal fourth by a widely rounded, transverse depression ; 
surface concentrically rugose on disk and sparsely clothed with 
recumbent white hairs. Scutellum large, triangular, green; 
surface finely reticulate. Elytra narrower at base than middle 
of pronotum, convex, with an oblong depression along lateral 
margin behind humeri; sides nearly parallel to middle, expanded 
at apical third, then strongly attenuate to the tips, which are 
conjointly rounded and finely dentate; surface finely im- 
bricate, sparsely clothed with very short, inconspicuous, brown 
hairs and irregularly variegated on basal half with broader 
white hairs, a transverse row of four rings of white pubes- 
cence at apical fourth and a few scattered hairs of the same 
color at apex. Abdomen very finely punctate. 
Length, 3.25 millimeters; width, 1.2. 
Described from a unique specimen from Mount Banahao, 
Luzon (Baker 8331). 
Sambus nigricans sp. nov. : 
Rather robust, ‘entirely black, elytra marked with irregular 
patches and transverse bands of silvery white pubescence; 
beneath black, clothed with short white pubescence. 
Head rounded in front, deeply grooved on vertex and occiput, 
with a broadly rounded depression on front, moderately punc- 
tate, very densely granulate, and sparsely clothed with short 
