20 TELEOSTEI. ACANTHOPTERYGII. 



moderate or small size. Air-bladder bifurcated anteriorly, and 

 with two long horns posteriorly. Pyloric appendages free. 

 Geographical Distribution. Indian and Atlantic Oceans. 



751. (1.) Ephippus orbis. (Fig. 7.) 



Chfetodon orbis, Bloch, Ich. p. 1187, t. 202, fig. 2. 

 Ephippus orbis, Day, Fish. India, p. 115, pi. xxix, fig. 4 (see 

 synon.). 



KJiarvud, Mamthi ; Nulla torrlti, Tarn. ; Kol-lid-dali, Andam. 

 D.8-9/19-20. P.19. A.3/15. C. 19. L.I, 42. L.tr.7/15. Csec.pyl. 2-4. 



Length of head 4 to 4|, height of body 1| in the total length. 

 Eyes diameter 2 3 in length of head, nearly 1 diam. from end of 

 snout and also apart. Fins dorsal spines moderately strong at 

 the base, interspinous membrane deeply emarginate ; the third, 

 fourth, and fifth spines are elongate and filiform at their extremities, 

 especially the third. Soft dorsal rounded. First ventral ray 

 elongate. Second anal spine the strongest, equal to the seventh 



Fig. 7. Ephippus orbis. 



dorsal spine in length ; anterior rays the longest. Caudal slightly 

 produced in the centre, and somewhat, emarginate above and below. 

 Colour back and head greyish green, sides and abdomen silvery 

 s jot with pink ; fin-membranes diaphanous, finely dotted with 

 black, more especially in their marginal halves ; rays bluish white. 

 The young have a dark-grey orbital baud, another over the nape, 

 and two over the body ; the fins are edged with grey. 



Hob. Seas of India to the Malay Archipelago : attaining at least 

 6 inches in length. 



