550 Philippine Journal of Science i«9 



Specimens were also collected on Dinagat Island, and these 

 show no appreciable variation from those from Surigao. How- 

 ever, the species was not collected on Siargao and Bucas Islands, 

 but it appears as if the above species is replaced or represented 

 in the last-mentioned islands by a form which I shall designate as 



Pachyrrhynchus virgatus subsp. insulanus subsp. nov. 



Uniformly shiny black, without any spots or markings. In 

 general form, stouter in build than P. virgatus, and the elytra 

 appear more inflated and more broadly rounded apically. 



Siargao and Bucas Islands (my collector) . 



A careful search made on numerous perfect specimens for 

 traces of scales or spots resulted negatively. 



Pacnyrrhynchus ardentius sp. nov. Plate I, fig. 7, 9 . 



Glossy, glowing, purplish red with pale green markings and 

 spots. Rostrum as broad as long, a strongly pronounced cross 

 groove at the middle, from which there extends to the front 

 a shallow depression, the lateral edges of which are strongly 

 raised. Front densely and finely punctured. Sides of head with 

 a scale spot. Prothorax slightly broader than long, with a 

 posterior submarginal groove. A small triangular scale spot 

 at the middle laterad, and a large oblong patch at each lateral 

 margin. Elytra with very faint traces of rows of punctures. 

 Each elytron with the following markings : Three spots at the 

 base, one of which, near the lateral margin, is large and oblong ; 

 at the middle a small spot discally and a band extending later- 

 ally; along the margin a large oblong spot, almost confluent 

 with a small triangular spot at the apex; beyond the middle at 

 the suture a small spot; another sutural spot near the apex. 

 Between the last-mentioned spots, somewhat laterad, a long dash ; 

 and laterad of the latter two other spots. Femora with a scale 

 spot apically below. 



Length, 16.5 millimeters ; width, 7.8. 



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



The spots on the elytra in this species seem to vary, since in 

 the above-described type, the only perfect specimen I received, 

 the second basal spot on the left elytron is absent. 



Pachyrrhynchus absurdus sp. nov. Plate I, figs. 3, 3a, $ ; fig. 4, $ . 

 Dark, glossy, glowing red, with bands of pale green scales. 

 The sexes pronouncedly different from each other in general form 

 and in markings on the prothorax. Rostrum sparsely punctured, 

 with a strongly pronounced, oblong depression from the middle 

 extending to the front, where it becomes shallow. The depres- 



