86 ICHTHYOLOGY 
simple ; head entirely scaly ; body covered with large scales, 
thirty-one on the longitudinal line and eleven on the transverse 
one ; these scales are striated and finely serrated on their edge. 
The lateral line is very feebly marked, and only extends to the 
thirteenth scale. The first dorsal has six feeble spines ; the 
first of which is shorter than the others ; these are rather pro- 
duced in filaments ; the second dorsal has one spine and eight 
rays ; the caudal has fifteen long rays and several shorter on 
each side ; anal with one spine and nine rays; ventrals inserted 
below the pectorals, very near one another j they have one 
feeble spine and five rather long rays ; pectorals not longer 
than the ventrals of seventeen rays. 
General colour of a light yellow, with the upper parts 
rather brown ; a very small and faint obscure spot at the 
upper angle of the base of the pectoral, and a rather dark but 
very faint line along the body to the base of the caudal. The 
dorsals have some irregular oblique transverse spots and the 
extremity of the second is black ; the caudal is transversely 
speckled with brown. 
Length less than two inches. 
Port Darwin. 
PERIOFHTHALMUS KOELREUTERI. 
Periopthalmus Koelreuteri, BL Sch., p. 65. 
. Cuv. and Vol., vol. xii., p., 181. 
Qobius Pallas. Spic, viii., p. 8, pi. 2, 
fig. 1. 
The specimen is two inches and two-thirds long. After 
having been preserved in liquor, it is of a light grey, indistinctly 
marmorated with purple, and the lower parts are of a dirty 
white ; the ventrals and anal are of the latter colour ; the 
pectorals and caudal are punctured with brown ; the dorsal is 
spotted, and has on both of its portions a broad obscure longi- 
tudinal band running at some distance from the edge. 
The first dorsal is not produced and the ventrals are 
separated. 
It is found in all parts of the Indian and in the Red Seas. 
Port Darwin. 
