368 Mr. F. Bates's descriptions 
flat — save the one marking off the epipleiu'a, which is sub- 
carinate — irregularly confluently punctured, longitudinally 
rugose, the punctures and the iiigosities together having 
somewhat of a chain-like appearance Avhen viewed laterally 
and obliquely ; the 4th interval is expanded near the base 
and has thereon an impressed elongate-oval ring ; the sides 
and apical half of the elytra are also irregularly, undulately 
elevated and depressed ; epipleural fold and underside dark 
bronzy brown, finely rugose-punctate, lower edge of the 
former very strongly sinuous : legs testaceous ; femora at 
base broadly dusky; tibiaj with a dusky ring beyond the 
middle: antenna} moderately stout, thickening outwardly; 
joint 3 not so long as 3 — 4 united; 11 very large, strongly 
obliquely ovoid; joints 1, 2 and 11, and the palpi, fulvous: 
prosternal process subhorizontal ; intercoxal process slightly 
rounded at apex. 
Long. 31 lin. ; elyti'. lat. If lin. 
$ ?. — A little smaller and more regularly oval ; the entire 
surface markings distinctly feebler, the colour entirely 
bronzed broAvn, Avlthout any darker markings ; the latei'al 
mai'gins of the elytra more broadly paler and the colour 
more dilute (approaching testaceous) ; the apex of the 
prothorax is simply emarginate, the front angles more de- 
pressed, the sides more strongly and more regularly 
rounded, the base more decidedly emarginate in the mid- 
dle ; the elytra naiTowed from behind the middle to the 
apex, the cpii)lcura less strongly marked off, and the tibia) 
liaA^e not the dusky-black ring beyond the middle. 
Long. 3 lin. ; lat. elytr. 1^ lin. 
Ilab. — New Caledonia. 
Adelium externecostatum, n. sp. 
^ ?. — Elongate-oval, dark-cop]iery brown, slightly 
bronzed, and with a slight metallic bronzed purplish tinge 
on the prothorax : head and prothorax densely, coarsely, 
and confluently rugose-punctate, with some small iiTcgular 
discal spaces smooth, irregularly foveate or unequal, median 
dorsal line indistinct ; apex arcuate-emarginate ; sides ex- 
])anded and attenuate, very finely margined, the edges 
crenulated, regularly romided ; base closely apjjlied to the 
base of the elytra, slightly but distinctly trisinuate, the 
inner sinus broad and shallow, the two outer slightly oblique, 
the hind angles slightly overlapping the shoulders of the 
elytra ; scutellum transversely triangular : elytra subde- 
