52 M0KMYKID2E. 



The depth of the body varies according to the individuals, males being more slender 

 than females. Counting the dorsal and anal fin-rays in fifty specimens, I find 25 dorsal 

 rays five times, 26 eight times, 27 sixteen times, 28 fifteen times, 29 four times, 

 30 twice; 30 anal rays twice, 31 five times, 32 ten times, 33 seventeen times, 34 eight 

 times, 35 six times, and 36 and 37 once. 



G. cyprinoides is known from the Nile, from the Delta to Gondokoro, from Lake 

 Chad, from the Niger, and from the Upper Congo. It has not been found in the 

 Blue Nile. 



List of specimens examined : — 



3 Egypt.— Ruppell, 1833. 



2 Lower Nile.— S. S. Allen, 1862. 



2 Nile.— Petherick, 1861. 



1 Kafr-el-Zayat, Rosetta branch of Nile. — Loat, 14.11.99. 



2 Barrage N. of Cairo.— Loat, 16.10.99. 

 6 Nile at Cairo.— Loat, 15-24.6.00. 



3 Wasta.—Loat, 19-28.8.99. 



3 Beni Souef.— Loat, 20-26.8.99. 



1 Between Beni Souef and Biba. — Loat, 7.9.99. 



2 Latum, Bahr-el-Yusuf, Fayuni.— Loat, 5.10.99. 

 1 Akhmim.— Loat, 13.12.99. 



19 At regulators near Luxor. — Loat, 28.10.-10.11.00. 



12 Assuan.— Loat, 22.8.-12.9.00. 



1 Khartum.— Petherick, 1862. 



1 Ghederah, White Nile.— Loat, 31.12.00. 



15 Fashoda, White Nile.— Loat, 17-26.3.01. 



1 Tewfikyeh, White Nile.— Loat, 22.1.01. 



2 Lake about 6 miles N.E. of Gondokoro. — Loat, 27.1.02. 

 1 Jebba, Upper Niger.— Capt. G. F. Abadie, 1899. 



1 Agberi, Lower Niger. — Dr. Ansorge, 1901. 



2 Niger. 



2 Stanley Falls.— Rev. W. H. Bentley, 1897. 



According to Cuvier and Valenciennes, the unpublished figure of this fish by Rifaud 

 bears the native name " Aboue fue fe." Mr. Loat has noted the following names: — 

 " Zahlooma " (^^;), at Kafr-el-Zayat ; " shefafer " (2Aa£) (should mean "transparent "), 

 at Akhmim; " oomshefafer" (di\J& J), at Assuan; and " oomshiffa " (i&£ J), at 

 Omdurman. 



Like Mormyrops anguilloides and Marcusenius isidori, this fish is called " Anooma " 

 by the Cairo fishermen, according to Capt. Flower, who observes that the species is 

 doing well in the Gezira Aquarium. " Though in a state of nature their habits are 

 apparently nocturnal, in captivity they soon learn to feed by daylight and eagerly 



