96 THE FISHES OF MALABAE. 



spine, from whence it slopes gradually downwards to opposite the third or fourth dorsal ray, and 

 then proceeds nearly straight to the centre of the caudal. 



The air bladder extends far backwards on each side of the haemal spines. 



Colours — Upper surface of head and back bluish grey, fading to silvery on the opercles and 

 abdomen. A bluish grey spot on the upper portion of the opercle, and a series of from six to 

 eight, or sometimes a double row, above the lateral line. Pectoral and caudal yellowish, the last 

 stained with black at its margin. Summit of the second dorsal blackish, the rest of the fins 

 white. Iris silvery. 



Grows to twenty inches in length. 



Habitat — Eastern coast of Africa, Seas of India, Malaysia, and China. 



* Choeinemus TOOLOO. 



Tooloo paeah, Bussell, pi. 137. 



Choeinemus tooloo, Guv. & Vol. viii. p. 377 ; Giinther, Catal. ii. p. 473. 



B.vii. D. 7|„.W P. 18. V.l. A.2| T ^ C. 19. 



Length of head ^- of total length. Height of body ^ of total length. 



Eyes — Their diameter equals then' distance from the anterior extremity of the snout. 



The maxilla does not extend posteriorly so far as to beneath the posterior margin of the orbit. 



The mouth is like that of the C. tola, C. fy V., but the limb of the preopercle has more 

 resemblance to that of the C. lysan. 



Teeth — Eesembling those of the C. tola, C. §• V. 



Lateral line — Scarcely curved. 



Colours — A series of about six small spots exists along the lateral line. Superiorly the head 

 is of a deep blue, and the back of a lighter tint : the abdomen of a yellowish white. The tips of 

 the dorsal and anal, also the lobes of the caudal, blackish : the other fins transparent. 



Grows to eighteen inches in length. 



Habitat — Red Sea, and Seas of India. 



Genus TRACHYNOTUS, Cm. & Vol. 



Teachinotus, Lacep. 

 CLesiomoeus, Lacep. 

 Acanthinion, Lacep. 



Branchiostegals seven : pseudobranehiae none. Body more or less elevated, and compressed. Eyes lateral. 

 Cleft of mouth rather small, muzzle swollen and very obtuse. Infraorbital bones do not articulate with 

 the preopercle. Two dorsals, the first composed of free spines, with a small interspinous connecting 

 membrane, and a horizontal procumbent spine directed forwards anterior to the fin, the base of which is of 

 less extent than that of the soft dorsal or of the anal, the anterior margins of each of the latter fins are 

 pointed and elongated : no finlets. Two spines, in front of but separated by an interspace from the 

 anterior margin of the anal fin. Ventral thoracic. Teeth small ou jaws, vomer, and palatine bones, usually 

 lost with age. Scales small. Lateral line continuous and unarmed. An air bladder bifurcated posteriorly. 

 Pyloric appendages numerous or in moderate numbers. 



