1899.] SYRIAK ¥ISnES OF THE FAMILY CICnLTD.^. 131 



extending as far as origin of anal. Ventral reaching origin of 

 anal. Anal III 8. Caudal truncate. Caudal peduncle as long 

 as deep. Scales with denticulate edge, 30 j^ ; lat. 1. gf^". Brownish 

 with 10 to 12 dark bars ; a dark opercular spot ; dark streaks and 

 a large white, dark-edged ocellus on the soft dorsal and on the 

 anal. 



Total length 63 milhm. 



Korogwe, German East Africa. 



45. TiLAPIA NUCHISQUAMULATA. 



Chromis nuchisquamulatus, Hilgend. Sitzb. Gres. naturf. Fr. 

 1888, p. 76. 



Chromis {Haplochromis) obliquidens, Hilgend. 1. c.^ 



Ctenochromis nuchisquamulatus, Pt'eff. Thierw. O.-Afr., Fische, 

 p. 14. 



Ctenochromis sauvagei, Pfeif. 1. c. p. 15. 



Ctenochromis obliquidens, Pfeif. Arch. f. Nat. Ixiii. 1897, p. 60. 



Tilapia nucliisquamulata, Bouleng. Tr. Zool. Soc. xv. 1898, p. 5. 



Tilapia sauvagii, Bouleng. 1. c. 



Tilapia obliquidens, Bouleng. 1. c. 



Teeth small, in 5 to 8 rows. Depth of body 2h to 2f times in 

 total length, length of head about 3 time?. Snout with straight 

 upper profile, a little longer than the eye, which is 3| to 3| times 

 in length of head, and equals or a little exceeds interorbital width ; 

 mouth with thick and broad lips, extending to below anterior 

 border of eye or slightly beyond ; 3 or 4 series of scales on the 

 cheek ; large scales on the opercle. 10 gill-rakers on lower part 

 of anterior arch. Dorsal XVI 8-10 ; last spine longest, about |- 

 leugth of head. Pectoral pointed, extending to origin of anal or 

 a little beyond. Ventral reaching vent or anal. Anal III 8-9. 

 Scales ctenoid, 28-31 ^~:-, ; scales on occiput and nape very small. 

 Olive or brownish, with more or less distinct dark cross-bars, with 

 or without a dark lateral stripe ; a dark opercular spot ; soft 

 dorsal with dark and light spots : three or four round white spots 

 on the posterior half of the anal ; ventrals black. 



Total length 125 millim. 



Victoria Nyanza. 



46. Tilapia rostrata, sp. n. (Plate XII. fig. 1.) 



Teeth very small, in 4 series in both jaws. Depth of body 34 

 times in total length, length of head 2|. Snout very long and 

 pointed, with slightly concave upper profile, twice as long as 

 diameter of eye, which is 4| in length of head and equals inter- 

 orbital width ; mouth |- width of head ; maxillary extending to 

 between nostril and eye ; 3 series of scales ou the cheek ; large 

 scales on the opercle. Gill-rakers rather long and slender, 21 on 



^ I am indebted to the kindness of Prof. Hilgendorf for notes on the type 

 specimen. 



9* 



