642 The Philippine Journal of Science ™™ 



Pachyrrhynchus infernalis Fairm. Plate 1, fig. 1 (lateral view) ; 



Plate 8, fig. 6. 

 Pachyrrhynchus infernaUs Fairm., Bull. Soc. Ent. France (1897) 70; 



Heller, Philip. Journ. Sci § D 7 (1912) 304. 

 Black; head, prothorax, and legs glossy, elytra rather dull. 

 Very nearly related to P. orbifer Waterh. Rostrum in apical 

 half scatteredly punctured. Basal half with a strongly de- 

 veloped depression, the dorsolateral edges of which are swollen. 

 Dorsal depression separated from front by an indistinct cross 

 groove. Prothorax subglobular, slightly broader than long, very 

 fine and regularly scatteredly punctured. Dorsally near pos- 

 terior margin an indistinct rudimentary longitudinal depres- 

 sion. Elytra short and stout ovate, very finely coriaceous and 

 striate-punctate. The punctures finer and closer than in P. 

 orbifer Waterh. Underside and legs uniformly black. 



Male, length, 11.5 millimeters (without rostrum) ; width, 5.8. 

 Liu Chiu Islands, Yayoyama, Ishigaki-shima. 

 This species is, as stated above, very closely related to P. 

 orbifer Waterh., particularly to the uniformly black form var. 

 inornatus Waterh., from northern Luzon and the Babuyan 

 group, which it absolutely resembles superficially. Unfortu- 

 nately, I have only one specimen of P. infernaUs before me which 

 precludes definite decision as to whether the slight structural 

 differences between it and P. orbifer are constant or not. An- 

 other noteworthy fact concerning this species is that it is the 

 most northern representative of all the Pachyrrhynchides. Its 

 peculiar geographic distribution seems to indicate that land 

 connections between the Liu Chiu Islands and the Philippines 

 probably existed in ages past. 

 Pachyrrhynchus moniliferus Germ. Plate 1, fig. 4, 5 (lateral view) ; 



Plate 5, fig. 12. 

 Pachyrrhynchus moniliferus Germ., Ins. Spec. Nov. 1 (1824) 336; 



No. 476, pi. 1, fig. 12, a, b; Schoenh., 4 * Gen. Cure. 1 (1833) 513; 



Dej., Cat. Col. ed. 2, 247; ed. 3 (1837) 270; Schoenh., Gen. Cure. 



5 (1839) 823; op. cit. 8 (1845) 386; Waterh., Proc. Ent. Soc. London 



(1841) 20; Ann. Mag. Nat. Hist. 8 (1841) 219; Trans. Ent. Soc. 



London I 3 (1843) 323. 



Ater, subtus viridi maculatus, thoracis 

 versa, maculari, media, linea angulata bas 

 mantinis. 



