86 Mr. A. Murray on Coleoptera from Old Calabar. 
impunctate; the elytra above the truncature terminating in 
three projecting teeth (the two outermost projecting furthest, 
and the outermost the smallest) ; there are faint traces of three 
raised lines or costz, of which these teeth are the terminations ; 
the raised reticulations have in some specimens one more deve- 
loped than usual, like a varicose vein, running transversely from 
the suture at about one-third of the length of the elytra from the 
apex. The outer margin has a row of punctures marked off by 
a slightly raised straight line, within which at the anterior part 
are two rows of punctures enclosed by an oblique line. Under- 
side piceous. Metathorax fulvo-pilose. Tibize finely externally 
toothed, especially near the apex. 
This I believe to be the A. muricata of Fabricius. Some ento- 
mologists on the continent still apply that name to it, doubtless 
from tradition. There is also a specimen in the Fabrician 
collection, now in the British Museum, bearing this name. 
The continental entomologists generally, however, consider it 
synonymous with d. ¢erebrans, Oliv.; and Lacordaire (Gen. 
Col. iv. p. 538) so records it; but I am convinced that this is 
an error, and a strong proof that it is so is that A. terebrans 
is found both in Brazil and Africa, while muricata is confined 
to Africa. Its appearance, too, is so different that one can 
only account for its ever being considered the same by the 
difficulty of putting the differences into words, and the ease 
with which a little exaggeration of the characters of terebrans 
would turn it into muricata. 
It is of the same size as terebrans, only broader and not quite 
so long, giving the effect of a more bulky insect. The thorax 
is decidedly broader in front, instead of bemg narrower as in A. 
terebrans. It is deep black, with much deeper reticulations on 
the elytra, leaving more open raised spaces, which are more 
shining and glittering. The apical truncature is more vertical. 
The descriptions do not help us in the least, that of Olivier’s 
terebrans and Fabricius’s muricata being totidem verbis the same 
for both. Lacordaire makes the suggestion that the tuft of hair 
on the forehead may be a sexual difference, in which case the 
present species might be a sex of ¢erebrans: it has not the tuft, 
nor the projecting teeth, and it has an additional and a curved 
development of the small most advanced teeth on the thorax— 
both corresponding to a sexual difference which, I think, occurs 
in another (smaller) species, A. monacha; but in it the reticula- 
tions are the same in both, which is not the case here; and, be- 
sides, as already said, all idea of this being a sex of terebrans is 
excluded by the fact of the one, and not the other, being found 
in South America. 
Not common in Old Calabar. It extends to Natal. 
