of neto genera and species of Tenehrionidce. 377 
prosternal process and mesostemum as in rohustus : inter- 
coxal process very wide, the apex distinctly broadly trian- 
gulate. 
Long. 4 lin. ; lat. elytr. 2^ lin. 
Hab. — New Caledonia. One example. 
Distinct from Blanchardi by the form of prothorax, &c., 
and from rohustus by the punctuation on the disk of pro- 
thorax not foveate, &c. 
Isopus cyaneus, n. sp. 
Somewhat briefly oval, shining, cyaneous with a slight 
violet tinge, the prothorax a little lighter : head and pro- 
thorax finely punctured, the epistoma and sides of the 
latter minutely so ; epistomal suture distinctly marked and 
somewhat angulate at each side : prothorax relatively wider 
and shorter than in those preceding, sides slightly curvedly 
narrowed from base to apex, the anterior angles scarcely 
so strongly and acutely produced as in those preceding, and 
directed towards the lateral margins of the head, very dis- 
tinctly depressed at the middle of the base : elytra of the 
same form as in Allardi, but stiU more gradually declivous 
behind, the apex scarcely so strongly produced and a little 
more broadly rounded, the punctuation of the stride stronger 
than in those preceding, especially at the apex, where it is 
the strongest : intervals indistinctly punctulate, the whole 
of them more or less convex at the apex ; the 9th is costate 
from near the shoulder to its junction with the 8tli, wliich 
is costate from before the middle to its junction with the 
7th near the apex, and the 7th is strongly costate from the 
middle to the extreme apex of the elytra ; underside blue 
with a greenish tinge on the metasternum and middle of 
abdomen, shining ; prosternal process, mesosternum, and 
legs, shining black; the two former, and the intercoxal 
process, of same form as in Allardi : tarsi and basal joints 
of antenna pitchy brown. 
Long. 4:h lin. ; lat. elytr. 2i lin. 
Hab. — New Caledonia. One example. 
Easily to be separated from all the other species by the 
colour, the strongly punctm-ed stride at apex of elytra, and 
the outer intervals strongly compressed, costate. 
Isopus caledonicus, n. sp. 
Oval, a little less convex than any of the preceding : 
head and prothorax shining black : front slightly depressed. 
