Catalogue of the fresh-water fishes of Africa in the British Museum (Natural History) . 01, i. p. 6. Body elongate, subcylindrical, covered with large striated scales ;lateral line complete, tubes straight. Head strongly ossified, coveredwith thin skin ; mouth small, proboscidiform, capable of being thrustforward, retractile into a depression on the upper surface of the snout;no teeth, except a conical tooth on each dentary, near the symphysis ;a single narial orifice, preceded by a barbel. Gill-openings narrow,restricted to the sides; 3 branchiostegal rays; no short, op
Catalogue of the fresh-water fishes of Africa in the British Museum (Natural History) . 01, i. p. 6. Body elongate, subcylindrical, covered with large striated scales ;lateral line complete, tubes straight. Head strongly ossified, coveredwith thin skin ; mouth small, proboscidiform, capable of being thrustforward, retractile into a depression on the upper surface of the snout;no teeth, except a conical tooth on each dentary, near the symphysis ;a single narial orifice, preceded by a barbel. Gill-openings narrow,restricted to the sides; 3 branchiostegal rays; no short, opposite to the space between ventrals and anal; lattershort. Ventrals far back, with 6 rays. Vertebra; 34 (26 + S). Air-bladdervery large, extending as far back as the anal fin. Niger, Congo. 1. ANSORGII. Bouleng. 1. c. pi. ii., and Ann. Mus. Congo, Zool. ii. p. 22 (1902) ; Ridewood,Journ. Linn. Soc, Zool. xxix. 1905, p. 277. Depth of body 5 to 6 times in total length, length of head fij to 7ftimes. Head depressed, with very broad, slightly convex interorbital Fig. PJiractolcemus ansorgii. Type. region; eye small, lateral, 4£ to 5^ times in length of head, 3 to 3^ timesin interorbital width ; nasal barbel nearly £ length of head. Dorsal 6,first four rays simple, the others usually bifid, originating at equaldistance from head and from root of caudal; second ray longest, 1| timeslength of head. Anal 6, similar to dorsal, but rays shorter. Pectoral PHKACTOLiEMUS.—KNEEIA. 169 rounded, a little shorter than head, as long as ventral, which is equallydistant from head and from anal. Caudal rounded. Caudal pedunclecompressed, nearly as long as deep, as long as head. Scales 35-40 |f ;on the caudal region the scales of the lateral line and those of the seriesabove it may bear a central tubercle. Uniform olive-grey. Total length 150 millim. Lower Niger, Upper Ad., hgr., Mouth of Ethiope River, Niger Delta, Dr. W. J. Ansorge (P.). & yg. types. 4. Skel. 5.
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Keywords: ., bookauthorbri, bookcentury1900, bookdecade1900, booksubjectfishes
