ou APPENDIX A. 
This species is allied to S. scha/, but distinguished by its enor- 
mously long spines. 
10. SYNODONTIS PUNCTULATUS, Giinth. Proc. Zool. Soc. 18809, 
p. 7, pl. vill. ig. A. 
A specimen brought from the Webi Shebeli differs somewhat 
from the types which were collected on Kilima-njaro. Not only is 
the upper surface of the head granular, not covered by thin skin 
as in the types, but also the dorsal fins are more approximated. 
It. CITHARINUS GEOFFROII, Cuv. 
This species extends from the Lower Nile to the Gambia and 
Niger. 
Two very young specimens from Lake Rudolf. 
12. ALESTES RUPPELLI, Gthr. 
Hitherto known from the Upper Nile. 
One very young specimen from Lake Rudolf. 
13. ALESTES AFFINIS, Giinth. Proc. Zool. Soc. 1894, p. go. 
Discovered by Dr. Gregory in the Tana River. 
Dr. Donaldson Smith brought home three specimens up to 
15.5 cm. in length. 
a, 6. From the Dawa River (25 & 28.2.95). 
c. From the Shebeli River (30.8.94). 
14. DISTICHODUS RUDOLPHI, sp. n. 
D. 2122, “Ao14. WHat. 1oo=108." Ws transv. 44. 
The height of the body is contained 34 times in the total length 
(without caudal), the length of the head thrice or 34 times. Snout 
rather pointed. Twenty-four teeth in the lower jaw. Silvery 
ereenish on the back, with nine blackish cross-bars and a large 
black przecaudal spot. 
The two specimens being very young, only 54 millim. long, it 
would not be safe to introduce more characters into the diagnosis 
of this species. They were obtained from Lake Rudolf. 
15. LABEO GREGORII, Giinth. Proc. Zool. Soc. 1894, p. 90. 
Discovered by Dr. Gregory in the Tana River. 
Dr. Donaldson Smith brought from the Guaso Nyiro a dried 
specimen, 22 cm. long, which seems to belong to this species. 
