LEZ Dr. A. Giinther on new Fishes 
Eutropius mandibularis, sp. 1. 
De 4/6... A. 5902 POTS, 
The height of the body is contained thrice and three-fourths 
in the total length (without caudal), the length of the head five 
times. The greatest width of the head equals its length without 
snout. The upper jaw is slightly the longer; cleft of the mouth 
twiee as broad as deep. Anterior mandibulary barbels short ; 
maxillary, nasal, and posterior mandibulary barbels subequal in 
length, not extending to the base of the pectoral, but beyond 
the orbit. The diameter of the eye is two-ninths of the length 
of the head. The dorsal fin is situated entirely before the 
ventral, the width of its base being more than tbat of the latter; 
its height equals the length of the head; spine slender, serrated 
posteriorly. The anal fin terminates at some distance from the 
caudal. Caudal deeply forked, with the lobes pointed. Pec- 
toral spine rather broad, serrated, terminating at some distance 
from the ventral. 
A single specimen, 9 inches long, was sent by Mr. Ussher 
from the Bossumprah River to the Liverpool Museum. 
Chrysichthys macrops (Gtbhr.). 
Upper Nile, Gaboon, Bossumprah River (Gold Coast). 
Synodontis guttatus (Gthr.). 
Gaboon, Lake Aznigo. 
Malapterurus affinis (Gthr.). 
Old Calabar, Gaboon. 
NANNOCHARAX, g. vn. (Characin.). 
Dorsal fin short, placed in the middle of the body, above the 
ventrals; anal short. Body elongate, covered with scales of 
moderate size; belly rounded. Cleft of the mouth very small, 
similar to that of a Coregonus ; intermaxillary and mandible with 
a single series of notched incisors. Nostrils close together. 
Gill-openings rather narrow, the gill-membrane being grown to 
the isthmus. : 
This genus is the type of a separate group, NANNOCHARACINA, 
intermediate between Anostomatina and Tetragonopterina. 
Nannocharax fasciatus, sp.n. Plate III. fig. A. 
D.12. A.10. V.10. L. lat. 46. LL. transv. 44 Ad. 
The height of the body is contained six times in the total 
length (without caudal), the length of the head four times and 
one-third. Eye large, the length of its diameter being less than 
