FISHES COLLECTED IN JAPAN. 11 
Houttuyn’s descriptions. Schneider and Lacépéde, as well as Gmelin, copied their descriptions 
from the above authors. Tilesius, who accompanied Krusenstern, describes it himself in the 
Denkschiften der Miinchner Acad. for 1811-12, vol. III, p. 71,in a memoir entitled, Abbildungen 
und Beschreibungen einiger F'ische aus Japan, &c.; and Messrs. Cuvier and Valenciennes describe 
it from his specimens also, without giving him credit for the above account of it. Tilesius seems 
to have given it the name of Hvicius, according to a curious note in the Mem. de la Soc, Imp. 
des Nat. de Moscou; Tom XI, p. 243, where he criticises Bloch’s description. 
The figure herewith given is probably that of a young specimen, though it varies in the 
number of rows of scales, great height of body and colors, from the species as hitherto figured. 
Each scale on its centre is of a bright vermilion, and the fins are all of the same color. The 
joints of the scales form a net work of black lines. The margin of the mouth, border of sub- 
orbital and opercles are also black. The caudal forked, as in the Faun. Jap. In the Hist. des 
Poissons, it is said to be rounded. 
Matskasa, the native name, means a pine cone or pine nut, which it indeed resembles in its 
external covering. 
20. DIAGRAMMA CINCTUM, Schlegel. 
D. ctnctum, Schleg. Faun. Jap. 61, pl. 26. fig. 1. 
Nores.—F rom Simoda, (8 inches.) 
From the imperfect drawing brought home by the Expedition, the following description has 
been made. Length, 8 inches. Height a little less than three times in total length. Head 
four times in the length. Eye five times in length of head. Profile sloping from the occiput 
in a straight line, at an angle of 45°. Lips very fleshy. First dorsal, with 12 spines, third 
longest, and not quite half the height of body. Caudal, slightly emarginate. 
General color of body and fins leaden blue, darker on back of head and body, nearly white 
beneath. Stripes as in figure quoted. Ivides silvery. Back sparsely dotted with oval spots 
of darker color, a few only below the lateral line. None over the head and shoulders. Dorsal 
and caudal spotted in same manner, 
21, AMPHIPRION FRENATVUS, N. S. 
PLATE VI, fig. 4. Life size. 
Norss.—From Lew Chew. (41 inches.) D. 12, (?) A. 17, &c. 
This well marked species seems to be undescribed. It has been placed under the genus Am- 
phiprion, though from the twelve dorsal spines noted in the drawing, and the smooth opercle, 
it may, perhaps, be a Pomacentrus. 
If it have seventeen anal rays as noted, probably three of them are spinous, which would 
bring it nearer to Glyphisodon. 
Its height is two and a half times in the total length, outline regularly arched above and 
below, spinous dorsal rising slowly to the soft dorsal, without break in the outline. Anal of 
subequal height. Caudal with rounded lobes and slightly emarginate. Color rich dark violet 
