23 - 6 Schultze: Pachyrrhynchus 



n\ Rostrum dorsally straight, prothorax mostly 



the anterior margin either all around uniformly narrow < 

 growing still narrower or broader toward underside. 



Subg. Orthocyrtus Heller. 

 m\ Dorsolateral edge of rostrum entirely rounded. 



p\ Elytra elliptical or ovate, as a rule with a ridged basal margin, 

 rarely dorsally flattened; if so, then with a ridged basal 

 margin. 

 q 1 . Elytra more or less striate-punctate, never granulate. 



Subg. Metapocyrtus Heller. 

 q\ Elytra more or less densely granulate. 



Subg. Trachycyrtus Heller. 

 p\ Elytra in the male dorsally flattened, the greatest width be- 

 hind the middle, posterior declivity very abrupt; in the fe- 

 male the latter is more or less oblique; in both sexes mostly 

 a tuft of seta? at sutural beginning of posterior declivity. 

 Homalocyrtus Heller. 



Genus PACHYRRHYNCHUS Germar 



Pachyrrhynchus Germar, Ins. Spec. Nov. (1824) 336. 

 Type species, P. moniliferus Germar from Luzon, Philippine 

 Islands. 



Head convex, eyes lateral, moderately bulging. Rostrum 

 short and stout, at most slightly longer than broad, dorsally 

 with an indistinct basal transverse furrow, but mostly without 

 the latter. Basal half with a broad, more or less strongly pro- 

 nounced squarish or oblong depression. Apical half dorsally 

 more or less transversely swollen. Sides angulate, with the 

 dorsolateral edges more or less pronounced. Antennal scrobes 

 deep, groovelike, sharply denned, curved downward toward 

 underside. Antenna short and robust, scape not reaching to 

 hind edge of eye, funicular joints together with club one-fourth 

 to one-third longer than scape. Prothorax slightly variable in 

 length, more or less ovoid-ellipsoid or subspherical, truncate at 

 base and anteriorly. Episternal suture of metasternum grooved 

 the whole length. Elytra short to oblong-ovate. 

 Range: Riu Kiu Islands, Philippines, and Moluccas. 

 Heller, in order to facilitate determination of the species of 

 Pachyrrhynchus, arranged the species mainly according to their 

 color designs or scale markings, into seven groups. Such an 

 arrangement is in the majority of instances quite satisfactory, 

 but in a number of instances gives a wrong conception, in as 

 much as morphologic-heterogenous species are placed together 

 in the same group. For example in Group I are located Pachy* 



