LABRID^!. 397 



of small teeth in the jaws, with a pair of curved canines in either 

 jaw, the upper -pair being received between the lower ones ; a pos- 

 terior canine tooth. Dorsal fin with usually fewer spines than 

 rays : anal with rays nearly similar to those of the dorsal. Scales 

 extended over the opercles, cheeks, and base of the vertical fins ; 

 no enlarged row at base of caudal fin. Lateral line continuous. 



Geographical Distribution. Red Sea, seas of India to the Malay 

 Archipelago. 



1253. (1.) Labroides dimidiatus. (Fig. 133.) 



136. 

 Ixxxvii, fig. 1 



Cossyphus dimidiatus, Cuo. fy VaL H. N. Poiss. xiii, p. 136. 

 Labroides dimidiatus, Day, Fish. India, p. 393, pi. 



(seesynon.). 

 D. 9/10-12. P. 13. A. 3/10. C. 14. L. 1. 46-50. L. tr. 4/15. 



Length of head 3 to 3|, height of body 3.] to 4 in the total 

 length. Eyes diameter 4 in length of head, 1 diatn. from end of 

 snout, and 1| apart. Lips emarginate anteriorly. Fins caudal 



Fig. 133. Labroides dimidiatus. 



cut square. Lateral line curves opposite posterior end of dorsal. 

 Colour nearly white, with a black band through eye to caudal fin ; 

 a black baud along anal, passing to the caudal and joining the 

 upper band at the end of that fin ; a dark band along dorsal. 



Hab. Red Sea, Coromaudel coast of India, Andamans to the 

 Malay Archipelago. 



5. Genus CHILINUS (Lacep.), Cuvier. 

 Oxycheilinus et C'rassilabrus, Gill. 



Brauchiostegals five. Body oblong, compressed. Preopercle 

 entire. Lower jaw not produced backwards. Teeth in one row, 

 two canines in either jaw, not directed outwards ; no posterior 

 canine. Dorsal spines about equal in number to the rays. 

 Anal with three spines, the third longest, the rays rather fewer 

 than those of the dorsal. Scales large, two rows on the cheeks, 

 the last three scales at the base of the caudal fin enlarged. Lateral 

 line interrupted. 



Geographical Distribution. Indo-Pacific. 



