242 IMr. G. A. Boulenger on new 



or 5 series ; 3 or 4 series of scales on the cheek ; 15 or 16 

 gill-rakers on lower part of anterior arch. Dorsal spines 

 increasing in length to the last, which measures a little less 

 than ^ length of head. Pectoral as long as head. Caudal 

 fin densely scaled, distinctly emarginate. Caudal peduncle 

 1\ to 1\^ times as long as deep. Scales cycloid or very finely 

 denticulate. Dark blue above, bluish white beneath ; dorsal 

 and caudal with small round red spots ; dorsal and anal edged 

 with bright yellow. 



Tiiree specimens, measuring 200-240 mm. 



Closely allied to T. lateristriga, Gthr. 



Tilapia inornata. 

 D. XVI-XVIl 11-12. A. Ill 9. Sc. 34-36 l^^. 



T 1 25-28 

 ■'-'• ^' 16-18' 



Depth of body equal to length of head, 3j to 3^- times in 

 total length. Eye 2| to 3 times in length of head, as long as 

 or longer than snout ; maxillary extending to between nostril 

 and eye ; lower jaw not projecting ; teeth very small, in 3 

 series ; 2 or 3 series of scales on the cheek ; 15 or 16 gill- 

 rakers on lower part of anterior arch. Dorsal spines in- 

 creasing in length to the last, which measures a little less 

 than \ length of head. Pectoral as long as head. Caudal 

 fin witli crescentic emargination. Caudal peduncle 1§ times 

 as long as deep. Scales finely denticulate. Silvery, back 

 olive. 



Total length 95 mm. Two specimens. 



Allied to T. kirkii, Gthr. 



T'ilap ia 771 a cropli ih a Ima. 

 D. XV-XVII 10-11. A. Ill 8-9. Sc. 32-34 f,. 



-r 1 23-29 

 ^- ^' IFT7- 



Depth of body equal to length of head, 3 times in total 

 length. Eye 2\ times in length of iiead ; snout with very 

 convex upper outline, | diameter of eye; maxillary extending 

 to between nostril and eye ; lower jaw not projecting ; teeth 

 very small, in 2 series ; 2 or 3 series of scales on the cheek ; 

 11 or 12 gill-rakers on lower part of anterior arch. Dorsal 

 spines increasing in length to the last, which measures about 

 ^ length of head. Pectoral a little longer than head. 

 Caudal tin with crescentic emargination. Caudal peduncle 



