162 ADDENDA, VOL. I. 



interocular width ; mouth small, below level of lower border of eye, its 

 width 4 times in length of head ; teeth strongly notched, 7 in each jaw; 

 anterior nostril on a level with centre of eye, lower a little lower down 

 and close to eye. Dorsal 18-20, originating above 2nd to 5th ray of 

 anal, its base equal to caudal peduncle. Anal 22-25, equally distant 

 from base of ventrals and from base of caudal. Pectoral pointed, nearly 

 as long as head, usually reaching extremity of ventral. Caudal with 

 rounded lobes. Caudal peduncle 1\ times as long as deep. 48-50 

 scales in lateral line, j^^ in transverse series on body, 16 round caudal 

 peduncle. Yellowish grey, speckled with black. 



Total length 83 millim. 



Lake Chad. — Types in Paris Museum. 



Intermediate between M. Ihuysii and M. isidori. 



20. MARCUSENIUS DISCORHYNCHUS, Peters. 



Keilhack, Mitth. Zool. Mus. Bed. v. 1910, p. 92. 



Add:— 



5-7. Hgr. Lake Bangwelu. F. H. Melland, Esq. (P.). 



8-9. Hgr. Nyassaland. A. R. Andrew, Esq. (P.). 



Add:— 



21. MARCUSENIUS PETHERICI, Blgr 



10. Hgr. Victoria Nile between L. Kioja F. H. Melland, Esq. (P.) 



and Murcbison Falls. 



5. STOMATORHINUS, Blgr. 



1. STOMATORHINUS PUNCTICULATUS, Blgr. 

 Add :— 



3. Ad. Boma. Mr. J. Paul Arnold (P.). 



6. STOMATORHINUS MICROPS, Blgr. 

 Steind. Denkschr. Ak. Wien, Ixxxix. 1913, p. 4. 



6. MYOMYRUS, Blgr. 

 la. MYOMYRUS MACROPS. 

 Bouleng. Ann. & Mag. N. H. (8) xiv. 1914, p. 383. 



Depth of body 4f to 5| times in total length, length of head 4| to 

 5 times. Head 1£ to lj times as long as deep, with convex upper 



