197 
prominences ; tail preheiisible, Unless ; pectoral fins. The males 
carry the eggs in a sac at the base of the tail, opening near the 
vent. 
“ Inhabitajits of all seas of the temperate and tropical regions, 
they are pelagic fishes, which attach themselve to seaweeds, or 
other floating substances, and are liable to be carried by currents 
to great distances, consequently some specimens are spread over 
different parts of the globe. The species are difficult to dis- 
tinguish, on account of the great amount of variation, to which 
the development of the tubercles, shape, of shields, and length of 
snout, are subject ; the number of dorsal rays appear to be very 
constant.” 
All this is perfectly exact ; but I am not certain that the 
length of the snout, and form of the body shields, does vary so 
considerably in the same sort, at least I have seen no example of 
it, and the presence of filaments is, I believe, only to be observed 
in the males of a few sorts, except in Phyllopteryx^ where they 
are constant in both sexes. 
HIPPOCAMPUS HOT.H-HOLLAHDIH!. 
Hip. Hovbb Hollandias, Sitzgsher, Ale. Wiss. Wien., 1866 
(Dr. Q-unther) 
Gunther, Catal., vol. viii., p. 201. 
Dorsal fins with seventeen rays ; the occipital coronet forms a 
little crown of five branches, leaving like a small cratere between 
them. 
The body is yellow, covered with small red spots ; dorsal fin 
with a longitudinal brown narrow band; the rays marbled 
brown and white ; back generally more or less marbled with 
brown. 
HIPPOCAMPUS TETSTIS. 
Same form as the preceding, but the tail shorter; dorsal fin with 
fourteen rays ; the shields of the body covered with transverse 
stripes ; the anterior abdominal crest of the body divided in 
points generally bifid. 
Dorsal fin with a narrow longitudinal brown band, and the 
rays marbled with the same colour. No filaments, 
One specimen. 
