TILAPIA. 



150 



23. Hot. 



Beira, Portnguese E. Africa. 



42. Ad. & bgr. 

 43-52. Hgr.&yg. 

 53-58. Ad , hgr., 



&yg- 



59-G7. Ad., bgr., 



& yg. 

 68. Hgr. 

 G9, 70-71. Ad. &yg. Buffalo U , East London. 



This species is very closely connected with 

 of some isolated specimens may be somewhat 



Mr. C. Grant (C.).; C. D. 

 Rudd, Esq. (P.). 



?? 

 Dr. J. D. F. Gilchrist (P.). 

 Major G. E. Bruce (P.). 



Dr. J. D. F. Gilchrist (P.). 

 Hon. P. A. Methuen (P.). 

 Mr. C. Grant (C) ; C. D. 

 Rudd, Esq. (P.). 



Dr. E. Warren (P.). 



Mr. T. Ayres (G.). 



Col. Bovvker (P.). 

 Rev. N. Abraham (C.) ; 

 Dr. A. Gunthor (P.). 

 Rev. N. Abraham (P.). 



J. F. Qiiekott. Esq. (P.). 

 Dr. J. D. F. Gilchrist (P.). 



T. nilotica, and the naming 

 arbitrary. 



8. TILAPIA LINNELLL 



Tilapia {Gephyrochromis) lintieUu, Lonnb, Ann. & Mag. N. H. (7) xii. 1903, 

 p. 42. 



Depth of body 2| to 2| times in iotal length, length of head 2J to 

 2J times. Head twice, or a little over twice, as long as broad, upper 

 profile nearly straight; snout rounded, as long as postocular part of 

 head ; eye 5 times in length of head, 1§ times in interorbital width, 

 equal to prseorbital depth ; mouth rather large, | width of head, 

 extending to between nostril and eye ; teeth in 6 or 7 series, outer 

 (about 100 in upper jaw) conical*; 2 series of scales on the cheek, 

 width of scaly part less than diameter of eye. Gill-rakers short, 16 on 

 lower part of anterior arch. Dorsal XV 12-13 ; last spine longest, not 



* In view of variations in other species, I doubt whether the conical condition of the 

 outer teeth will prove a constant character, although Prof. Ldnnberg has had as many as 

 eight specimens at his disposal. 



