212 



CICHLID.'E. 



moderately slender, in 4 series, 30 to 34 in outer series of uppei jaw; 

 3 series of scales on the cheek, width of scaly part nearly equal to 

 diameter of eye. Gill-rakers short, 10 or 11 on lower part of anterior 

 arch. Dorsal XI 11-12; spines feeble, subequal from the third, which 

 measures ^ length of head. Anal III 8-9 ; spines feeble, like the 

 dorsals. Pector.il f to | length of head, not reaching origin of anal. 

 Ventral not reaching vent. Caudal rounded Caudal peduncle as long 

 as deep. Scales cycloid, 28-30 jy ; lateral lines -^fj-^ ; breast and belly 

 naked. Dark blue above, with more or less distinct, ill-defined, darker 

 bars; sides with pale blue spots; dirty white beneath; lower labial 

 lobe perfectly white ; fins greyish, soft dorsal, anal, and caudal with 

 numerous small darker spots which may form vertical bars on the caudal ; 

 the latter with the posterior edge of a faint pink. 



Total length 60 miliim. 



Lake Magadi, a hot soda lake in bottom of Rift Valley, British East 

 Africa, at an elevation of 1980 feet above sea-level. 



1-5. Types. L. Magadi. J. W. Graham, Esq. (P.). 



6-35. Ad., yg., & eggs, „ C. W. Woodhouse, Esq. (P.). 



I'ilapia woosnami. 

 Type (Tr. Z. S. 1911). 



46. TILAPIA WOOSNAMI. 

 Boideng. Tr. Zool. Soc. xviii. 1911, p. 417, pi. xliii. fig. 2. 



Depth of body 2| times in total length, length of head 3 times. 

 Head twice as long as broad ; snout obtusely pointed, as long as post- 

 orbital part of head, as long as broad, with slightly convex u])per 

 profile; eye 4^ times in length of head, equal to width of interorbital 

 region or depth of pra?orbital ; mouth moderate. | width of head. 



