nasal spines, the lowermost, which is blunt and not so obvious, a downward one. M outh
small, without any teeth th a t can be discerned even with a lens; but a decided roughness
can be felt on the vomer, seeming to indicate the presence of minute teeth on th a t part. The
superciliary ridges, already alluded to, are slightly granulated, and term inate behind in two
sharp triangular points. The occipital ridges, a ridge on the posterior suborhital immediately
beneath the eye, and an interrupted ridge on the temples and suprascapulars, are in like manner
granulated, or rather obscurely crenated. The opercle and preopercle are marked with a few
stri®, but show neither granulations nor spines. Gill-opening very small. No scales on any
part of the head and b od y ; but the whole surface of the latter is hispid with minute bristly
appendages to the cuticle, each springing from a minute papilla. There are also a number of
fine lines traversing the cuticle in two directions, and forming a kind of net-work. The lateral
line commences a t the suprascapular, and terminates a little beyond the end of the dorsal, not
reaching quite to the caudal; its course is nearly, but not exactly, parallel to the dorsal line,
the distance between them being at first one-third, but towards the caudal between one-third
and one-fourth of the depth.
Dorsal very much elevated anteriorly, but its height by no means uniform throughout;
the first spine one-fourth shorter than the second; this again a little shorter than the th ird ;
and this last a very little shorter than the fourth and fifth, which are longest, and which equal
three-fourths of the depth of the body; sixth and succeeding ones gradually decreasing, the
ninth being about equal to the first, the twelfth about one-third shorter; the next four are
scarcely shorter than the twelfth, and the seventeenth or last is a little higher than the sixteenth ;
then follows the soft portion of the fin, which is here again elevated, the soft rays being nearly
double the length of the last spinous.* The anal answers in position to the first two-tliirds of
the soft dorsal, term inating before that fin, as in A . torvus : the fourth, fifth, and sixth soft rays
are longest, and much longer than the soft rays of the d o rsal; the spine is short and slender,
and not much more than half the length of the first soft ray. The last ray of both dorsal and
anal is divided quite to the root so as to appear as two. The caudal appears to have been
rounded, but the ends of the rays are worn and broken. Pectorals long, equalling one-third of
the entire length : they consist of nine rays, the three middle ones of which are lon gest; the
three upper and the three lower ones are respectively e q u a l; all the rays simple. Ventrals
much shorter than the pectorals, and, though attached rather more behind, not reaching so f a r ;
their spine is rather stout, much more so than th a t of the anal, and about tbree-fourths the
length of the first two soft rays, which are the longest in the fin.
C o l o u r .— “ Pale reddish orange, with black spots on the fins, and a dusky shade on the
back.”— D.
A second specimen only differs from the above in having the teeth in the jaw s more sensible to the
touch, though still scarcely to be seen ; and in the superciliary and occipital ridges being
less granulated or crenated a t the edges. The colours also are a little darker. The fin-ray
formula is exactly the same in both specimens.
H abitat, Peninsula of Tres Montes, Archipelago of Chiloe.
This species approaches most nearly the A . Peruvianus of Cuvier and
Valenciennes, with which it agrees in the great depth of the body, and in the
* This portion of the fin is not quite correctly represented in the plate, being m ade too low , in consequence
of the rays having been broken a t their extrem ities in the specimen figured.