PISCES. 
161 
Dr. Stoindachner, Verli. Zool.-Bot. Ges. Wien, 18G4, April 6, describes three 
new species from West Africa : — 
Chromis dumerilii, p. 225, taf. 7. fig. 1; Ch. gUntheri, p. 228, taf. 8. figs. 3 & 4 j 
C/i. aureU'S, p. 229, taf. 8. fig. 6. The same author figures Ch. lotus (Gthr.), 
taf. 8. figs. 1 & 2 ; he has also recognized Ch. niloticus as a species inhabiting 
the Lake of Galilee, but sbmewhat too hastily identifies with it the Spams 
gnltlcem (Ilasselq.), which, after all, may proveto be a distinct species. See 
Giinth. Proc. Zool. Soc. 1804, November 8. 
Acara fuscomamlata (Guich.) is described by Steindachner, Denkschr. Acad. 
Wiss. Wien, 1864, xxiii. p. 60. 
v/ Acara rectangularis, sp. n., Steindachner, 1. c. p; 57, taf. 1. fig. 1, from Mexico. 
'Heros. Dr. Steindachner has described and figured the following known 
species, in Denkschr. Acad. Wiss. Wien, 1864, xxiii.: Heros urophthalmus 
(Gthr.), p. 66, taf. 6. fig. 3, and H. fenestratus (Gthr.), p. 68, taf. 1. fig. 2. 
The following new species have been described :■ — 
V Heros labiatus, Gunther, Proc. Zool. Soc. 1864, p. 27, pi. 4. fig. 1, from the 
Lake of Managua ;'^LT. guttulatus, p. 152, and macracanthus, Gunther, ibid, 
p. 153, from Guatemala ; ^H. ciirinellus, p. 153, nicaraguensis, p. 153, and 
v/ H. dovii, Gunther, p. 154, from the Lake of Nicaragua. 
'’Heros hifasciatus, Steindachner, Denkschr. Acad. Wiss. Wien, 1864, xxiii. 
p. 60, taf. 2 Heros lentiginosus, Steind. 1. c. p. 62, taf. 3. fig. 1 f Heros hcUeriy 
Steiud. 1. c. p. 64, taf. 4. fig. 1 Heros gihbiccps, Steind. 1. c. p. 66, taf. 6. figs. 
1 & 2j Heros macidipinnis^ Steind. p. 69, taf. 4. fig. 2; ^ Heros triagramma^ 
Steind. p. 70, taf. 3. fig. 2 Heros melanopogon^ Steind. p. 72, taf. 1. fig. 3 j — 
all from Central America. 
Petenia splendida. A young example of this fish has been figured by Dr. 
Steindachner in Denkschr. Acad. Wiss. Wien, 1864, xxiii. taf. 4. figs. 3 & 4. 
Gadid^. 
Hr. Malmgren mentions the following species as occurring on the Finnish 
coasts : — Gadus morrhua, G. navaga^ G. saida^ G. (sglejinus^ G. carbonariusy 
Lota molva^ Lota mdgaris, and Brosmius vulgaris. Wiegm. Arch. 1864, p. 297, 
Chiasmodus niget (Johnson) proves to be a Gadoid fish. Dr. Gunther gives 
a description of it in Caial. Fish. v. p. 435, 
/ 
1 / 
PlEURONECTIDA!. 
Prof. Steenstrup has examined very young specimens (about 
one inch long) of a form of Pleuronectoids which he names 
Plagusia, but the position of which in the system is not quite 
^ evident. They have the eyes on the left side, the upper in 
<advancc of the lower, a small mouth, pectoral fins on both sides, 
I and the vertical fins continuous. In the youngest of these 
! specimens he observed, like V an Beneden and others, that the 
j eyes are symmetrically placed, one on each side; however, he 
\ differs from Van Beneden* in not believing that the asymmetry 
1 peculiar to the later stages of growth of these fishes is produced 
* Prof. Steenstrup also states that Van Beneden’s specimen was not a 
Rhombus, but perhaps a Pleuronectcs, possibly no Pleuronectoid at all. 
1864. 
3ut pernaps 
[voL. I.] 
M 
