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Show 1899.] SYRTAN FISHES OF T H E FAMILY CICHLID^E. 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 Avith denticulate edge, 30 ~ ; lat. 1.2~. 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. TotaJ length 63 millim. Korogwe, German East Africa. 45. TILAPIA NUCHISQUAMULATA. Chromis nuchisquamulatus, Hilgend. Sitzb. Ges. naturf. Fr. 1888, p. 76. Ghromis (Haplochromis) obliquiclens, Hilgend. 1. c.1 Ctenochromis nuchisquamulatus, Pfeff. Thierw. O.-Afr., Fische, p. 14. Ctenochromis sauvagei, Pfeff. 1. c. p. 15. Ctenochromis obliquiclens, Pfeff. Arch. f. Nat. lxiii. 1897, p. 60. Tilapia nuchisquamulata, 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 2\ to 2f times in total length, length of bead 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 beloAv 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 X V I 8-10 ; last spine longest, about f-length 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 3:* 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 interorbital width ; mouth f- width of head ; maxillary extending to between nostril and eye; 3 series of scales on the cheek; large scales on the opercle. Gill-rakers rather long and slender, 21 on 1 I am indebted to the kindness of Prof. Hilgendorf for notes on the type specimen. 9* |