LATES. 455 



apparently absent from Lake Victoria), in the Chad Basin, in the Senegal, the Niger, 

 and the Congo. 



The following series of specimens has been at my disposal : — 



2 Lake Menzaleh.— Dr. J. C. Mitchell, 1895. 



3 Freshwater pool near Ghet-el-Nassara, L. Menzaleh. — Loat, 8-11.6.99. 

 1 Lower Nile.— Petherick, 1861. 



9 Samannud.— Loat, 13-22.7.99. 



1 Shuba, N. o£ Cairo.— Loat, 20.3.99. 



1 Barrage N. o£ Cairo, bought in Boulak Fish Bazar. — Loat, 20.3.99. 



1 Nile near Cairo, upstream side of barrage. — Loat, 4.8.99. 



32 Beni Souef.— Loat, 13-30.8.99. 



1 Birket Karun, Fayum. — Dr. J. Anderson, 1894. 



7 Birket Karun.— Loat, 29.9-1.10.99. 



11 At regulators near Luxor. — Loat, 3-12.11.00. 



1 Between Luxor and Assuan. — Loat, 9.00. 



2 Assuan.— Loat, 26-30.9.00. 



3 Kosheh, Nubia.— Loat, 12-14.3.00. 



2 Khartum.— Petherick, 1862. 



1 Rosaires, Blue Nile. — Capt. Flower, 6.05. 



1 Fashoda, in a kore. — Loat, 16.3.01. 



1 Polkom, Baro R. (Sobat). — Zaphiro, 4.04. 



3 Mouth o£ Lake No.— Loat, 4.2.01-1.4.01. 

 18 Lake No.— Loat, 22.2-4.3.01. 



1 Tsutyaba, Lake Albert.— Budgett, 8.8.02. 



1 R. Shari-wasu, at Maidugari. — Capt. Gosling, 1904. 



1 R. Yo, Lake Chad.— Capt. Gosling, 1904. 



1 St. Louis, Senegal.— Delhez, 1899. 

 5 Kaedi, Senegal.— Delhez, 1899. 



2 Niger.— Dalton, 1864. 



2 Niger.— W. A. Forbes, 1883. 



1 Erpton, Upper Niger. — Budgett, 1903. 



3 Agberi, Lower Niger. — Dr. Ansorge, 1902. 



1 Boma, Lower Congo. — Capt. Wilverth, 1897. 



1 Dolo, Stanley Pool.— Delhez, 1899. 



1 Monsembe, Upper Congo. — Rev. J. H. Weeks, 1899. 



1 Banzyville, Ubanghi. — Capt. Royaux, 1901. 



Mr. Loat says that Lates niloticus occurs in fair numbers in Lake Menzaleh, but 

 only during the high Nile, and that it is particularly numerous in the Birket Karun. 

 He further observes : — 



"It is but rarely that one comes across large specimens, as during the three years in 

 which I was engaged in making the Nile Fish Survey, I only saw two examples of 

 unusual size : one was at Assuan, which measured above 4 ft. in length, although I 



