ACANTHOPTERYGII. 
Pisces 14 
and palate very numerous, bristle-like ; larger and stronger teeth in the 
outer border of the intermaxillary band, more forward on the outer edge 
of the mandibular band, as also on the inner edge of the same band on 
the sides of the lower jaw ; hinder edge of praeopercle toothed ; oper- 
culum with a spine ; scales on trunk moderate ; branchiostegals seven. 
C. agasshi, sp. n., Steindachner, SB. Ak. Wien, Ixxviii. Abth. i. p. 395, 
Galapagos. 
Perea fluviatilis. On the specific identity of P. gracilis, 0. V., and P. 
Jlavescens, Mitch., with this species, and on the distribution of Perea in 
America ; id. 1. c. p. 399. 
Percichthys godeffroyi, Gthr., is a sea fish belonging to Serranus, and 
identical with S. humeralis, 0. V., = S. semifasciatus, placed in Centro- 
pristis by Gunther. On the other hand, S. humeralis, Gthr., 1877, is not 
the above species of C. Y., but S. alho-maculatus, Jen., erroneously 
referred by Gunther to S. Tmmeralis, C. Y. Id. 1. c. 
Lates darwiniensis, sp. n., Macleay, P. Linn. Soc. N. S. W. ii. p. 345 
(d. 7 rL a. 1, 11. 60), Fort Darwin. 
Gulliveria, g. n. Teeth on both jaws very numerous, short, conical, 
pointed, swollen, and rounded at the base, placed irregularly and crowded ; 
no canines ; tongue smooth ; an angular line of teeth on palate ; prsBopercle 
without denticulations, or with very feeble ones ; opercle with a fiat soft 
spine ; two dorsals, the first with six spines, the second with along spine ; 
anal with two spines ; general form oval, compressed ; scales moderate 
or rather large ; lateral line continuous, not extending on the caudal ; 
maxillaries extending to posterior edge of the eye ; opening of the mouth 
rather oblique. G.fasca and fasciata, spp. nn., Castelnau, P. Linn. Soc. 
N. S. W. iii. p. 45, Norman River. 
Centropomus viridis, sp. n., W. N. Lockington, P. Oal. Ac. vii. p. 109, 
Asuncion Island, Lower California (? = C. undecimalis, 0. Y.). 
Pseudanthiashypselosoma,sp. n., Bleeker, Arch. Neerl. xiii. p. 58, fig. 2, 
New Guinea. 
Serranus. Remarks on this genus, particularly ^with respect to the 
specific characters based upon the proportions of the body, and the ratio of 
variability of such characters according to age and individualization ; also 
on the relative value of characters for its subdivision into groups, and 
especially on the scales of the lateral line as being of primary importance. 
The subgenera are given as follows, p. 67 : — 
1. Serranus : scales of lateral line quadrilateral, ctenoid ; caudal 
rounded, truncated, or feebly concave. 2. Paralahrax : scales of lateral 
line subtriangular, ctenoid ; dorsal with 10 spines ; anal with 7 or 8 rays ; 
caudal feebly concave ; canines moderate, numerous, and rnnged along 
the entire length of the jaws. 3. Paranthias : scales of lateral line trian- 
gular, with or without spinules along the canal ; caudal deeply forked, 
with the angles prolonged ; dorsal with 9 spines ; anal with 8 or 9 rays. 
4. Epinephelus : scales of lateral line triangular, without spinules ; caudal 
rounded, truncated, or feebly concave ; section 1, dorsal 9, section 2, dorsal 
11. 5. Itaiarax scales of lateral line without spinules, canal ramified 
behind; caudal rounded ; dorsal with 11 spines ; anal with 8 rays. Yail- 
lant & Bocourt, Miss. Scient. Mex. 
1878. [voL. XV.] B 8 
