xv, 6 Schultze: Contribution to Coleoptera Fauna 559 



tending in a slight curve also to the lateral margins. Apical 

 triangle with a large V-shaped marking. 



Length, 13.5 millimeters, without rostrum ; width, 5.3. 



Siargao Island (my collector). Type in my collection. 



Numerous specimens of this species were collected, but only 

 from the above locality. 



Alcides arenatus sp. nov. 



Subcylindrical, very slender, reddish brown. Rostrum re- 

 latively short; densely, irregularly, and confidently punctured. 

 Prothorax very coarsely granulose, except the anterior submar- 

 ginal area, and sparsely tomentose. Elytra very regularly punc- 

 tate-striate, the punctures very large and squarish, the interstices 

 forming regular ridges. Legs rather coarsely and confluently 

 punctured and sparsely tomentose. 



Length, 11 millimeters, without rostrum; width, 3.5. 



Siargao Island (my collector) . Type in my collection. 



This interesting species is easily recognized among any of the 

 other Philippine species of Alcides by its very slender structure, 

 peculiar sculpture, and coloration. 



Alcides plagiatus sp. nov. Plate I, fig. 18. 



Shiny black, with large creamy white spots. Rostrum with 

 a fine groove in the basal half; dorsally sparsely and finely punc- 

 tured, laterally coarsely. A shallow depression on the front, 

 which bears a punctifoim impression. Prothorax finely and 

 regularly punctured, strongly and uniformly inflated dorsolater- 

 al^, near the anterior margin laterally constricted. At the con- 

 striction an oblong spot; another roundish spot located at the 

 base laterad. Elytra very finely striate-punctate. Each elytron 

 at the base with a depression reaching from the roundish and 

 projecting scutellum to the humeral angle, the basal margin 

 rounded, bent upward and slightly overlapping the prothorax. 

 Another depression at the apical decline. Each elytron with 

 the following spots: A large, suboval sutural spot at the base, 

 another large roundish spot before the middle at the lateral 

 margin, a roundish subsutural spot in the apical half, laterad 

 of the latter a smaller roundish spot, and a V-shaped spot at the 

 apical triangle. Prosternum, mesosternum, and metasternum 

 creamy white; abdominal segment laterally with a series of 

 creamy white spots. 



Length, 16.5 millimeters, without rostrum; width, 6.5. 



Luzon, Uocos Norte Province, Mount Palimlim (my collector) . 

 Type in my collection. 



