OPHIDIIM. 
Ill 
body, and three-eighths of the length of the head. The caudal lobes are entirely 
scaleless, and the upper is contained thrice and a quarter in the length of the body. 
Colour silvery, with longitudinal lines as in G. acinaces, but much more conspicuous. 
Length 6f inches. 
Aden. Zanzibar. 
373. Gerres oyena. [383.] 
Labrus oyena, Forsk. p. 35. 
Smaris oyena, Rupp. Atl. p. 11, t. 3. f. 2. 
Gerres oyena, Cuv. fy Val. vi. p. 472; Giinth. Fish. iv. p. 261. 
Aden. Zanzibar. Mozambique. Red Sea. Indian Ocean. 
Family CHROMHAF. 
CHROMIS, Cuv. 
374. Chromis niloticus. [123, 305.] 
Labrus niloticus, Hasselqu. p. 392. 
Chromis niloticus, Cuv. Regne Anim.; Giinth. Fish. iv. p. 267. 
Pangani River. Nile. Natal. 
Order AN AC ANTH INI. 
Family OPHIDIHAE. 
FIERASFER, Cuv. 
375. Fierasfer neglectus. [464.] 
Fierasfer neglectus, Peters, Wiegm. Arch. 1855, p. 260 ; Giinth. Fish. iv. p. 382. 
The length of the head is one-eighth of the total, and its greatest width is rather more 
than one-third of the length. Gill-opening very wide, leaving nearly the whole of the 
isthmus exposed. Vent slightly in advance of the pectorals. Dorsal very inconspicuous ; 
anal low but distinct. Teeth in villiform bands on the jaws, the outer series being 
somewhat larger ; two rather small canines in the front of the upper jaw ; three very 
large, compressed, curved teeth on the vomer. 
Colour light, spotted with brown, each spot on the body with a minute black point 
in the centre ; a silvery band along the anterior portion of the lateral line. 
Length 3-| inches. 
Zanzibar. Mozambique. 
