240 LIEUT.-COL. PLAYFAIR ON THE FISHES OF ZANZIBAR. [Apr. 8, 
sixth that of the body. Anterior dorsal spine filiform, terminating 
in a lanceolate trifid (or fringed?) lobe ; its length is more than twice 
that of the second spine, which is about one-half that of the third. 
The third is remote from the soft dorsal, but connected with it by a low 
cutaneous fold. The end of the soft dorsal is remote from the base 
of the caudal; it is quite unconnected with it, and the last ray does 
not reach so far if laid backwards ; anal not half the length of the soft 
dorsal. There are a few very minute tentacles on the lower jaw, but 
none on the body. A cutaneous fold runs along the sides a little 
distance below and parallel to the base of the soft dorsal, than which 
it is somewhat shorter. Skin rough, covered with minute spines. 
Colour.—Ground-colour brownish, a large black patch extending 
over the whole of the abdominal region; other smaller mass-like 
patches below chin, on sides of head, on upper part of body, soft 
dorsal, anal, and across the tail; these sometimes anamostose and 
enclose spots of the ground-colour ; several round ocelli above base 
of pectorals and on base of dorsal; all the patches and ocelli have 
light edges, as also have the pectoral and ventral fins. 
Length 4 inches. 
DIAGRAMMA ORIENTALE. 
Anthias orientalis, Bl. t. 326. f. 3. 
Serranus orientalis, Cuv. & Val. ii. p. 318. 
Diagramma orientale, Cuv. & Val. v. p. 299, pl. 124; Ginth. 
Fish. i. p. 326. 
D. sibbaldii, Benn. Proc. Zool. Soc. 1832, p. 182. 
Zanzibar. Seas of Ceylon and Bali. 
PROSOPODASYS LEUCOGASTER. 
Prosopodasys leucogaster, Richardson, Voy. Samarang, Zool. Fish. 
pl. 5. f. 1, 2; Ginth. Fish. ii. p. 141. 
Height of body less than length of head, and one-fourth of total. 
Lower jaw slightly prominent, cleft of mouth oblique; maxillary 
reaches slightly beyond centre of eye. Interorbital space much less 
than orbit. Preeorbital with two spines, of which the first is rather 
small, and the second very long. Infraorbital with bony ridges, but 
no distinct spine. Preeoperculum with five spines; the interoper- 
culum with one, and the operculum with two bony ridges. The 
first dorsal spine is situated before the posterior of orbit ; it and the 
two succeeding ones are contiguous with, but rather remote from, 
the remainder ; the third is the longest ; the fourth is situated above 
the opercular margin. Caudal acutely rounded. Ventrals reach- 
ing to the vent, and pectorals much beyond it. Head and body 
naked. 
Colour brownish, marbled with darker and lighter. Upper part 
of head black; a black spot on spinous dorsal between fifth and 
eighth spine. 
Length 23 inches. 
Zanzibar. 
