ICUTUYOLOGY. 193 



Preopprclo with a slinllow omargiiuition aliovc its an}rle. Vertical limb finely ser- 

 ratpil, lowrr, i-iitirc. A veiy strong curved canine on either side of the premaxillary 

 with an intermediate smaller pair. An outer row of curved canine-like teeth in both 

 jaws, largest in the hirer. A'illiform teeth in a narrow band on the palatines, on a 

 A patch on the vomer, and along the eentre of the tongue. Scales as in L. fidncn. 

 Dorsal spines moderate, fourth longest. Colour, five or six blue bands run from the 

 eye down the back and sides. A dark mark at the base of the pectoral and another 

 below the commencement of the soft doisal. 



The Andamans. 



L. GlliUCS, FOKSK. 



13 vii.; D. ij; P. 18; V. i; A. -,-\ ; C. 17. 



Vertical limb of preopercle with a very deep omargination, succeeded by a broad 

 and deep angle, equal to half its height. Above the notch the serrations are fine ; over 

 the angle, and a little way on the lower limb, they are coarse. Large canines in the 

 premaxillaries. An outer row of curved canine-like teeth in both jaws, the posterior 

 ones above, directed slightly forwards. Villiform teeth on a band on the palatines, 

 and on a A area on the vomer. None on the tongue. Colour crimson. Scales as 

 in L. Jidrux. Dorsal and anal fins black with a dark basal band, and edged with white 

 margin. I'ectorals and ventrals yellow. Caudal dark purple. Grows at least 16 inches. 



The Andamans. 



L. QUIXQUELINEARIS, Bloch. 



]i. vii.; D. „'2-e ; r. 16; V. i; A. ^3_; C. 17. 



Vertical liml) of pr(^opcrcle deeply cmarginate, with a rounded angle. Vertical 

 and lower limbs serrated. Upper canines moderate and curved. An outer row of 

 canine-like teeth in both jaws, largest in the upper. Villiform teeth as in L. gibhus. 

 Dorsal spines moderate, fourth longest. Scales as in L. fidrns. Colour olive yellow, 

 with five blue bamls down the body from the eye. Fins yellow. A deep black 

 mark below the dorsal, and some dark lines on the nape. 



The Andamans. 



L. DECUSS.4.TDS, Cuv. et Val. 



li. vii.; D. T-i^nr; P. 15; V. i; A. J; C. 17. 



Vertical limb of preopercle with a shallow emargination, and finely serrated as 

 far as the angle. One or two large curved canines in the premaxillaries, and an 

 outer row of curved canino-like teeth in both jaws, rather larger, less curved, and 

 wider apart below. Villiform teeth as in L. gibbus. Third, fourth, and fifth dorsal 

 spines longest. Scales as in L. fiih-us. Colour whitish, with six longitudinal black 

 bands down the body, decussated by six ill-marked vertical ones over its upper thii'd. 

 A deep black spot at the root of the caudal. A white band across the occiput. 

 Fins greyish-white, edged in front. 



The Andamans. 



Ambassis, C'uvt'er et Valenciennes. 



Branchiostegals 6. Body compressed, more or less diaphanous. Lower limb of 

 preopercle with a double serrated edge. Two dorsal fins, the first with seven spines. 

 A forwardly directed recumbent spine in front of the dorsal. 



Small fishes a few inches in length. 



A. NAMA, Ham. Buch. 



Bvi.; D. 7T»^Ty; p. 13; V. i; A. „V7 S C. 17. 



Blunt serrations along the horizontal limb of preopercle and on preorbital. Lower 

 jaw longer than the upper. Large curved canines in lower jaw. Colour yellowish 

 olive covered all over with minute black dots, which are collected on the shoulder into 

 a vertical oblong patch. Summit of head and top of eyes black. Fins orange. 

 Upper half of first dorsal black. Second dorsal black-edged. Caudal dark. Anal 

 with a black mark over the base of spines. 



India and Burma in fresh water. 



13 



