330 Zoological Society :— 
size. Snout rather short, with the cleft of the mouth of moderate 
width. A band of small teeth in the jaws; teeth on the vomer. 
Two separate dorsals, composed of spines only; the anterior short, 
formed by three spines. Ventrals jugular, composed of three rays. 
Head with tentacles; gill-opening wide. 
CREMNOBATES MONOPHTHALMUS. 
D.3 (27. oA. 3.90.3. Lelat. 38) 
A fimbriated superciliary tentacle ; a small one at the nostril and 
on each side of the nape, both multifid. A black ocellus, edged with 
white, on the posterior quarter of the dorsal fin. 
Description.—This fish is very similar to Cristiceps argentatus in 
general habit, but may be readily distinguished by the dorsal fin, 
which is entirely composed of spines. Head and body are oblong 
and compressed ; the length of the former is one-fourth of the total, 
the height of the latter one-sixth. The cleft of the mouth is of 
moderate width, with the lower jaw slightly prominent, and with the 
maxillary extending beyond the vertical from the centre of the orbit. 
The teeth in the outer series are stronger than those in the narrow 
band behind ; vomerine teeth apparently in a single series; palatine 
teeth none. The orbital tentacle is shorter than the eye, with three 
or four cilia; the nasal and nuchal tentacles are still shorter. The 
pectoral is nearly as long as the head, rounded, with the middle rays 
longest ; ventral slender, somewhat shorter than the pectoral, with 
the outer ray longest. The first dorsal fin commences in the verti- 
cal from the preeopercular margin ; the two anterior spines are a 
little higher than the second dorsal, and flexible; the membrane 
behind the third spine extends backwards to the base of the second 
fin. All the spines of the second fin are stiff and pungent, of nearly 
equal length, the anterior ones being a little shorter ; the membrane 
of the last spine terminates immediately before the base of the caudal, 
leaving that fin quite free. Caudal rounded, one-seventh of the total 
length. The anal commences below the seventh spine of the poste- 
rior dorsal, and terminates before the caudal ; it-has two spines an- 
teriorly. The scales are of moderate size; the lateral line runs 
closely along the dorsal profile, is bent downwards behind the pec- 
toral, and proceeds along the middle of the tail to the caudal. 
Brownish, irregularly marbled with darker ; anterior dorsal black- 
ish; a black ocellus, edged with white, on the nineteenth and twentieth 
spines of the posterior dorsal. 
Total length 2 inches. 
MUGIL PROBOSCIDEUS. 
D. 4 A. =. L. lat. 38. - L. transv. 14. 
The front part of the upper lip is extremely thick, conically pro- 
duced ; the lower parts of both lips with a band of soft pavement- 
like papille, arranged in oblique series. Cleft of the mouth deeper 
than broad. 
Description.—This species is naturally more closely allied to 
Agonostoma plicatile than to Mugi/, but differs from it in having no 
