FISH. 39 



nasal spines, the lowermost, which is blunt and not so obvious, a downward one. Mouth 

 small, without any teeth that 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 that part. The 

 superciliary ridges, already alluded to, are slightly granulated, and terminate behind in two 

 sharp triangular points. The occipital ridges, a ridge on the posterior suborbital immediately 

 beneath the eye, and an interrupted ridge on the temples and suprascapular, are in like manner 

 granulated, or rather obscurely crenated. The opercle and preopercle are marked with a few 

 striae, but show neither granulations nor spines. Gill-opening very small. No scales on any 

 part of the head and body ; 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 at 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 third; 

 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 j 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-thirds of 

 the soft dorsal, terminating 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 dorsal ; 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 longest ; the 

 three upper and the three lower ones are respectively equal ; all the rays simple. Ventrals 

 much shorter than the pectorals, and, though attached rather more behind, not reaching so far ; 

 their spine is rather stout, much more so than that of the anal, and about three-fourths the 

 length of the first two soft rays, which are the longest in the fin. 



Colour. — " 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 jaws more sensible to the 

 touch, though still scarcely to be seen ; and in the superciliary and occipital ridges being- 

 less granulated or crenated at the edges. The colours also are a little darker. The fin-ray 

 formula is exactly the same in both specimens. 



Habitat, 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 made too low, in conse- 

 quence of the rays having been broken at their extremities in the specimen figured. 



