PLATE LXVIII- 
criterion of its being new, since it might be only the fry of some kind 
sufficiently well known when full grown ; hut this, we are persuaded, 
from its characteristic particulars, cannot be the case. It may be the 
young of a larger species, but whatever may be tire size to which it 
anains at maturity, it is certainly new, in our opinion. The nearest 
to which it approaches is Cyclopterus Liparis, and it is evidently 
distinct from that. According to Mr. Montagu, the dorsal and anal 
fin terminate close to the tail, but arc not connected with it, as we 
have observed to prevail unerringly in Cyclopterus Liparis. This 
may not be altogether satisfactory, when we consider how liable the 
membranes, which connect those fins, are to be severed asunder by 
accident. The structure of its sucker, or organ of adhesion, offers 
a more decisive character : that of Liparis is circular, with the disk 
broad, and somewhat heart-shaped: Cyclopterus Montagui has on 
the contrary a sucker nearly of an ovate form, the disk of which is 
oval. In both, the sucker is divided into two lateral lobes by means 
of a longitudinal ligament, but in Liparis this ligament is broad, ot a 
flimsy texture, and not immediately perceptible among the tranverse 
folds of the sucker, while in Cyclopterus Montagui the longitudinal 
line is narrow, and distinctly marked ; hut the exterior outline of 
the radius, and the disk, are alone perfectly sufficient to prove them 
distinct species without a reference to any othei character. 
Several new species of Cyclopterus of a small size are men- 
tioned by Gindin, on the authority of Pallas, who describes them 
at length, and gives figures of them in his Spicilegia Zoologies, 
neither of which agree however with our Cyclopterus Montagu 1 ' 
We at first suspected it might be his minutus from its size, g e " 
neral habit, and form of the sucker, but the dorsal spine on the 
anterior part of the back, and two bony tubercles on the sides, which 
