Catalogue des poissons d'eau douce d'Afrique au British Museum (Natural History) . Capitaine S. Flower (P.). 12. Al. Lahun, Fayum. L. Loat, Éq. (C). 13-16. Ad. et hgr. Entre Assiut Et Abu Tig, „ Bas Nil. 17-36. Ad., hgr. Et yg. Luxor. „ MARCUSENIUS. I / 37-40. Ad., hgr. Et yg. Entre Louxor Et Assuan. 47. Ad. Assuan. 48. Hgr. Lac Non, Nil Blanc. 49. Hgr. Gondokoro, Bahr-El-Gebel. L. Loat, Éq. (C). 16. MARCUSENIUS CASTE.Ulppopopotamyrus caste, Pappenh. Sitzb. NAT. GE*. Fr. Berl. 1906, p. 260, et Mitth. Zool. Mus. BERL. III. 1907, p. 351, pi. II. Fig. 2 et 3. Profondeur du corps égale à len

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Catalogue of the fresh-water fishes of Africa in the British Museum (Natural History) . Capt. S. Flower (P.). 12. Al. Lahun, Fayum. L. Loat, Esq. (C). 13-16. Ad. & hgr. Between Assiut and Abu Tig, „ Lower Nile. 17-36. Ad., hgr., & yg. Luxor. „ MARCUSENIUS. I / 37-40. Ad., hgr., & yg. Between Luxor and Assuan. 47. Ad. Assuan. 48. Hgr. Lake No, White Nile. 49. Hgr. Gondokoro, Bahr-el-Gebel. L. Loat, Esq. (C). 16. MARCUSENIUS CASTOR.Ulppopotamyrus castor, Pappenh. Sitzb. Ge*. nat. Fr. Berl. 1906, p. 260, andMitth. Zool. Mus. Berl. iii. 1907, p. 351, pi. ii. figs. 2 & 3. Depth of body equal to length of head, of to 4 times in total length.Head 1-i- to 1^ times as long as deep, with curved upper profile; snoutrounded, length of head, projecting beyond mouth ; mouth belownostrils, its width length of head ; teeth bicuspid (truncate when worndown), 5 in upper jaw, 6 in lower, median pair of lower teeth muchlarger than the others ; nostrils equnlly distant from end of snout andfrom eye, on a line with lower border of eye ; eye moderate, about § Fkr. 60.. ?in ^£^&^a Marcustnias castor.Type. i. length of snout and f interorbital width. Dorsal 31-32, its origincorresponding to that of anal, its length f its distance from head.Anal 32-35, nearer base of caudal than base of ventral. Pectoralpointed, a little shorter than head, not quite twice as long as ventral, and extending beyond root of latter. Caudal densely scaled on half ofits surface, with pointed lobes. Caudal peduncle 3 times as long asdeep, -| length of head. 85-93 scales in lateral line, ^A in transverseseries on body, -| in transverse series between dorsal and anal, 16 round 7S MORMTRID^E. caudal peduncle. Brown, with an indistinct darker vertical bandbetween origin of dorsal and anal. Total length 215 miilim. Cameroon.—Types in Berlin Museum. 1. One of the types. Lokunde R., near Bipindi. Hr. G. Zenker (C); Berlin Museum (E.). 17. MARCUSENIUS HARRINGTON!.Bouleng. Ann. & Mag. N. H. (7) xv. 1905, p. 457 ;

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