Species of Xrw-Zfufdnd Colei'ptera. 153 



Onias, gen. nov. 



ftosfrnin shorter tlian thorav, suhpanillcl. The aerobes 

 begin at or just hefori" the midiUe of the rostrum and ex- 

 tend ah)ng the sides, beK)w the upper surface, to the eyes. 

 Scape sulndavatc for half of its length, slender near the l)ase, 

 attaining the eye. Funiculus 7-artieulate, first joint thiek, 

 seeon<l of similar form and length but more slender, 3-G 

 gradually decrease in K'ligth, seventh short and transverse; 

 elub ovate. Tliorax without ocular lobes, rather longer than 

 broad, base bisinuatc. Scutellum al)seut. E'>itra cordate, 

 as wide as thorax at the base. Femora simple, long and 

 stout, grooved near the extremity. Tibi(B short, flexuous, 

 uncinate. Tarsi slender, nearly glabrous underneath, with 

 only a few fine sctjc on their third joint. 



Pectoral canal liiiiited between the intermediate cox?e by 

 elevated borders. Mclasternu/n ^hort. JiiisA ventral scf/ment 

 broadly rounded between the eoxic, its apical suture (juite 

 straight ; it is about double the length of the second ; third 

 and fourth, conjointly, as long as the second ; the terminal 

 narrow, depressed at each side. 



Ditl'erentiatcd from Tyludes, Acalles, and their nearest 

 allies by the nearly glal)rous soles of the tarsi, abdominal 

 structure, hair-like vestiture, &c. Metacalles has a long 

 rostral canal, the base of the thorax is truncate, and the 

 abdomen difters. 



Onias latisulcalus, sp. n. 



Convex, subovate, piceous ; apex of rostrum distinctly red ; 

 tibi;e ferrugineous ; antennje testaceous or rufescent ; clothed 

 with minute dark fuscous and paler squamie and numerous 

 outstanding seUr. 



Rostrum longitudinally sculptured and punctate, squaniose 

 near the base, smooth but not definitely carinate along the 

 middle. Thora.e rather longer than broad, widest just 

 behind the middle, more, yet only gradually, narrowed in 

 front than behind ; coarsely aiul closely pnnctured, broadly 

 cliannellcd along the middle, and with a very slender cariiui 

 or smooth line in the middle of the depression ; at each side 

 of this a few paler scales almost form spots. Elytra strongly 

 rounded laterally, niueh narrowed, and nearly vertical be- 

 hind ; they are rather short; with series of oblong punctures 

 along the middle, so as to appear regularly striatc-|)unctatc 

 there; this area, from the base to the middle, is bordered by 



Ann. (C- Mag. N. Hist. 8er. 8. Vol. iv. 11 



