FISH. 3! 
the P. fasciatum; from the former of which it may be distinguished by its greater 
depth and nearly even dorsal, from the latter by its plain colour free from all 
conspicuous bands and markings. The dorsal notch is scarcely observable, the 
eleventh and twelfth spines being nearly equal, and but little shorter than the 
first soft ray. Its analogy to the genus Cantharus among the Sparide, which it 
resembles as well in colour as in general form, is very striking. There are two 
specimens in the collection; the one described first above having been taken at 
Chatham Island, the other at Charles Island, in the Galapagos Archipelago. 
1. Latinus sucuuaris. Val. 
Latilus jugularis, Cur. et Val. Hist. des Poiss. tom. ix. p. 369. pl. 279. 
Form.—Elongated, with the dorsal line slightly curved, the ventral nearly straight. Greatest depth 
contained five times and one-third in the entire length. Head, which much exceeds the depth, 
four times in the same. Profile very convex above the eyes, whence it falls obliquely to the 
lips. Snout thick and rounded, resembling that of the Red Mullet: mouth protractile, 
horizontal, placed at the bottom of the snout, the commissure just reaching to a vertical from 
the anterior part of the orbit. Jaws equal or very nearly so; the lower one perhaps a very 
little the longest. Maxillary not widening at its posterior extremity. A band of velutine teeth 
in each jaw, narrowing at the sides as it extends backwards; with an outer row of longer and 
stronger ones: in the lower jaw, the velutine band does not extend beyond the middle of the 
sides, the carding teeth being all that are visible. Tongue and palate smooth. Eyes high in 
the cheeks; large, and of an oval form; their vertical diameter three-fourths of their 
longitudinal ; this last equalling one-fourth the length of the head. Nostrils consisting of two 
round apertures, the posterior one largest, the anterior covered by a membranous flap. Pre- 
opercle with the denticles far apart, and not very obvious, unless the skin be dissected off; the 
ascending margin rectilimeal and vertical; the angle rounded. Bony part of the opercle 
terminating in a flat point, above which are two other smaller points not so well developed ; all 
the points concealed in the membrane, and scarcely visible from without : beneath the principal 
point, the membrane is prolonged backwards in the form of a broad flattened bristly point 
three lines in length. Crown, gill-covers and cheeks, scaly, but not the jaws; snout scaly, 
except very near the lips. Gill-opening large. ; 
Lateral line at first at one-third of the depth, but falling gradually to one-half. Scales 
rather small; one taken from immediately above the lateral line of an oblong form, the length 
being twice the breadth, with its free margin finely ciliated, crenated behind with a fan of nine 
strie ; on scales taken from other parts the number of striz in the fan are more numerous. 
One long dorsal fin of nearly uniform height throughout, equalling about half the depth ; 
only four slender spines, gradually increasing in length from the first which is very short; the 
fourth about three-fourths the length of the first soft ray ; soft rays increasing likewise very grad- 
ually to the fourth, which with the next five or six are highest ; the membrane of the fin very 
