1864. ] DR. A. GUNTHER ON NEW AMERICAN FISHES. 23 
4. On some New Species or CenTRAL-AMERICAN FISHES, 
By Dr. A. GUnrHer. 
(Plates III. & IV.) 
Our Corresponding Member Capt. J. M. Dow having sent to this 
Society a second collection of Central American Fishes, a complete 
series.of the species contained therein has been deposited by our 
Secretary in the British Museum. The following is a list of those 
which I have examined, a few others having been omitted, as they 
belong to families in the revision of which I am engaged at present 
or shall be in a very short time :— 
. 
I. Species collected on the Pacific Coast of Panama. 
1. SERRANUS SELLICAUDA, Gill, sp. 
2. Ruypricus MAcuLatus, Holbr. 
3. Mrsorprion NOVEM-FASciATUS, Gill, sp. Very closely allied 
to M. griseus. 
4. Mesorrion, n. sp. There are two young specimens of an 
apparently undescribed form in the collection ; but the description 
and determination are better deferred until more examples have 
been obtained. 
5. PRISTIPOMA MELANOPTERUM, C. & Y. 
6. PristipoMa Dovil, n. sp. (PI. III. fig. 1.) 
DG. A. =. L. lat. 48. L. transv. 8/15. The height of the 
body is one-half of the total length (without caudal) ; the length of 
the head one-third. Snout obtuse, not much longer than the eye ; 
cleft of the mouth small, the maxillary extending to the vertical 
from the anterior margin of the orbit. Lips thick ; a pair of pores 
on the symphysis of the lower jaw, a central groove behind it. Snout 
naked, the remainder of the head being scaly. The width of the 
interorbital space is much less than that of the orbit. Dorsal and 
anal spines exceedingly strong; the third of the dorsal fin is the 
longest, and nearly two-thirds as long as the head. The second anal 
spine is much longer than the third, and a little shorter (but stronger) 
than the third of the dorsal fin. Each ray of the soft fins is accom- 
panied by a series of minute scales, but only on the caudal fin are 
these scales dense enough to cover the rays. Caudal fin slightly 
emarginate. Silvery, with four black cross bands: the first runs 
from the occiput through the eye to behind the angle of the mouth; 
the second from before the dorsal fin to below the base of the pec- 
toral; the third from the base of the sixth, seventh, and eighth 
dorsal spines to the vent ; the fourth descends from the origin of the 
soft dorsal to that of the soft anal. Fins blackish. 
Only one specimen, 83 inches long, is in the collection. 
7. PotyNEMUS APPROXIMANS (Lay & Bennett ?). 
D.75. A.x. L. lat. 60. 
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