Dr. A. Giinther on Central-American Fishes. 829 
_ BLENNIUS BREVIPINNIS. 
D. 5. A. 15-16. 
The height of the body is nearly equal to the length of the head, 
and contained four times and a half in the total. The snout is 
obtuse, with the upper profile very oblique. Jaws without a curved 
tooth. Orbital tentacle slender, fringed at the base. The dorsal fin 
commences in the vertical from the operculum, is deeply notched, 
and not continuous with the caudal. The pectoral is longer than the 
ventral, and extends on to the vent. Greyish-brown (in spirits), 
with a darker lateral band. 
lines. 
IETS 555s d x a) e'y ch amb aene Si 5 op 18 or 23 
geemeat Of the body .....-............ 4or 5 
CLINUS MACROCEPHALUS. 
Ds. Ag 0.13. P.13. V. 1/3. 
The height of the body is contained seven times and a half in the 
total length, the length of the head five times. The head is de- 
pressed, rather short, nearly as broad as long; crown of the head 
broad and flat ; interorbital space concave, narrower than the orbit. 
Snout very short, obtuse, rounded; the maxillary does not extend to 
behind the posterior margin of the orbit; lips thick. The teeth in 
the jaws form a band with an outer series of stronger ones ; vomer- 
ine teeth in a narrow band; palatine teeth none. No orbital ten- 
tacles ; those at the nostril and on the neck very small. Gill-openings 
wide, the gill-membranes being united at the throat. Head naked ; 
scales on the body not very small, cycloid. The dorsal fin commences 
at the occiput, and terminates near the base of the caudal: the 
spines are flexible, and much lower than the soft rays; the three 
anterior ones are rather more remote from one another than the 
following : none of the rays of this or of the other fins are branched. 
Caudal rounded. The anal is higher posteriorly than anteriorly, 
about as high as the spinous dorsal. Pectoral rounded, with the 
middle rays longest, shorter than the head. Ventrals jugular, half as 
long as the pectoral, with the spine and the outer ray enveloped in a 
common thick membrane. Dark greyish olive ; head and fins black- 
ish ; head, base of the pectoral, anterior part of the body, and dorsal 
dotted with white. 
lines 
TIE ay 8 Eee chess Sa ec aN a ee 61 
Mun on tee hedy: 22.6 ee ees 8 
meeemotthe head .. 22.56. 6480 See 12 
Greatest width of the head .............. 11 
See Gt the head . 6... uies ech. CONS 4 
Length of the caudal fin ................ 10 
of the pectoral fin: . ..2. svi. tt. 103 
Cremnosates (BLENNIID2). 
(Substituted for Auchenopterus, which is preoccupied.) 
Body moderately elongate, with the scales small or of moderate 
