92 CUJPMBM. 



The habitat of this fish, the Twaite Shad, extends from the North Sea to the 

 Mediterranean; during the breeding-season adult individuals ascend rivers for the 

 purpose of breeding — in the Nile as far up as the Fayum. According to Mr. Loat, 

 this Shad is fairly common at Cairo in January and February, while the rest of the 

 year very few are taken. It is a rare fish in the Bahr Yusuf and the Birket Karun. 



The eggs, as observed in France and Germany, are heavier than the fresh water in 

 which they are laid, but, unlike the herring's eggs, they are quite free, do not adhere 

 to anything. The larvae are transparent and slender. 



Native names : — " Sagloga" according to Hasselquist ; according to Mr. Loat 

 " Sardeena" (<%y»), at Kafr-el-Zayat, also at Cairo, Samannud, and in the Fayum; 

 and " Sarboura" (s^^**), at Kafr-el-Zayat, Cairo, Rosetta. Generally speaking, 

 small examples of this species are called " Sardeena " and big ones " Sarboura." 



Another species of Clupea occurs in Lake Menzaleh, but does not ascend rivers. 

 This is C. maderensis, Lowe, easily distinguished from C. finta by the thicker, 

 striated scales numbering only 45 to 50 in a longitudinal series, and by the shorter 

 mouth, the maxillary extending only to below the anterior third of the eye. 



