106 Mr. A. Murray on Coleoptera from Old Calabar. 
are very prominent when seen from behind. Kyes moderate. 
Thorax subquadrate, unequally impressed, a large fovea in 
the lobe in front of the scutellum, two others placed obliquely 
on each side of it, a transverse one in front, and a triangular 
one on the inflexed side, which is sinuate ; posterior angles 
obtuse, and posterior margin of median lobe truncate, straight. 
Scutellum triangular. Hlytra with the shoulders not very 
prominent, and the apex fimbriated with fine denticulations. 
Underside shining eneous, fulvo-pubescent, acicularly rugose. 
One specimen. 
(Subgen. Polyonychus, Chev.) 
This subgenus is not accepted by Lacordaire nor by Kiesen- 
wetter, although the former so far inclines to adopt it as to 
point out the characters which distinguish it from Corebus, 
and the latter divides Corwbus into two sections, of which the 
one has the characters of Corewbus as restricted by Chevrolat, 
and the other those of this genus (Polyonychus). Although 
the seizable generic characters are trifling, the difference in 
facies is tolerably marked; and I therefore think it a useful 
section, worthy of being preserved, particularly in a family 
which is so numerous, and of which the species are so much 
alike as the Agrilide. The true Corebi are the broader flat 
species with irregular patches or bands of different coloured 
pubescence, of which CU. rubi may be taken as the type, while 
the more uniformly metallic and less banded species, such as 
C. elatus, compose the genus Polyonychus. It is to be ob- 
served, however, that the name is not happy ; for both Corewbus 
and Polyonychus have equally the claws of the tarsi spht in 
two. 
2. Corebus (Polyonychus) viridanus, Cast. & Gory, Monogr. 
Bupr.-t3. 1.15: 
One specimen. 
3. Corabus (Polyonychus) sophoroides. 
Agrilo Sophore aftinis, thorace antice latiore; elytris apice et 
fascia prope apicem pilis albidis leviter et sparsim obtectis. 
Long. 23 lin., lat. 4 lin. 
This species differs in the following respects from Castelnau 
and Gory’s description and figure of Agrilus Sophore, to 
which it was referred by some continental entomologists to 
whom I sent it. In the first place the tarsi are short, more 
especially the first article, which is inconsistent with the genus 
Agrilus, in which Castelnau and Gory place Sophore.  Pass- 
ing that, it is, like it, a small bright-green insect like an Agri- 
