. Catalogue of the fresh-water fishes of Africa in the British Museum (Natural History) . th of the head, 1§ (young) to 2-f times in inter-ocular width; latter less than distance between eye and spiracle ; nasalbones in contact on the median line in the adult; a series of 4 to 7shields between postorbital and spiracular shields; suboperculum muchlarger than eye. Dorsal fin with XIV-XVIIl spines ; spines over-lapping when folded down. Anal 11-15. Pectoral reaching beyondvertical of first dorsal spine. 63-70 scales in a longitudinal series,11-15 between occiput and first dorsal spine, 46-54 roun
. Catalogue of the fresh-water fishes of Africa in the British Museum (Natural History) . th of the head, 1§ (young) to 2-f times in inter-ocular width; latter less than distance between eye and spiracle ; nasalbones in contact on the median line in the adult; a series of 4 to 7shields between postorbital and spiracular shields; suboperculum muchlarger than eye. Dorsal fin with XIV-XVIIl spines ; spines over-lapping when folded down. Anal 11-15. Pectoral reaching beyondvertical of first dorsal spine. 63-70 scales in a longitudinal series,11-15 between occiput and first dorsal spine, 46-54 round middle ofbody. Greyish or greenish olive above, the young with 10-13 cross-barson the back and 2 or 3 stripes along (he sides of a darker shade, these POLYPTJEKUS. 7 markings becoming more indistinct or disappearing in the adult; a fewscattered black spots sometimes present ; paired fins with more or lessdistinct transverse streaks or series of spots, the other fins withoutspots ; belly yellow. Total length 720 millim. Nile, Lake Rudolf, Chad Basin.—Types in Paris Museum. Fte. Polypterus Delta (F. {. 1-3. Ad. 6: Ad., stffd. 7. Hor. 8. Ad. 9-12. Hot. & yg. 13-14. Ad. & hgr. 25. Hgr., skel. 26. Ad. 27. Ad. 28. Ad. 29. 30. Ad., stffd. Near Damietta. Dr. J. G. Mitchell (P.). Mansurah, Damielta Nile. N. R. Harrington, Esq., and Dr. Hunt (E.).Cairo. Dr. Riippell ((.). Near Cairo. L. Loat, Esq. (0.). Kawa, White Nile. „ Goz abn Gnmali, White Nile. „ Grharh-el-Aish, „ „ Fashoda, „ ,, Near Kerro, ,, Mouth ot Lid<e No, „Bahr-el-Gebel. Nile. Capt. S. Flower (P.). 2. POLYPTERUS LAPRADII. Steind. Siteb. Ak. Wien, lix. i. 1869, p. 103, pi. i. figs. 1 & 2, and pi. ii. figs. 1 & 2 ; Boulong. Ann. & Mag. N. H. (7) ii. 1898, p. 418 ; Budgett, Proc. Cambr. Philos. Soe. x. 1900, p. 236 ; Bouleng. Proe. Zool. Soc. 1902, i. p. 1*3, pi. x. figs. 1 & 2. Head rather strongly depressed, If to 2| times as long as broad, its S lengt
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