NATURAL HISTORY. ae 
‘lower part of the back armed with nine erectile spines,* 
joined together by a web, and with the fins marked by 
zebra-like stripes. Then there was one superb creature, a 
fish with great tusk-like teeth—teeth that resemble in 
shape, but are somewhat larger than, a dog’s canines. 
This fish is figured in Stanley’s ‘Dark Continent’ under 
the name of the “Livingstone pike,’ although I do not 
myself think it bears any resemblance or affinity to the 
pike family, but rather approaches Hydrocyon,t and offers. 
many points in common with Serrasalmus pirayx or 
Lrythrinus macrodon--fish belonging to the rivers of 
Guiana and other portions of the west coast of South 
DY Y), NM y hf 
Vip) ( h f bt pyc 
WAG VA AR 
nila 32 ft ( iN \ 
YY, j lp py 
America. This particular specimen of the Congo was a 
rosy-pink over the upper part of the body, greyish-white 
below, and was 3 ft. 7 in. in length.{ Another curious 
Congo fish has the jaws prolonged into a sort of proboscis, 
with a sucker at the end. 
Finally, I have often heard of Protopterus from Euro- 
peans, who averred they had seen it, but although I 
searched in many a muddy stream and pool I was to the 
end unrewarded by its capture or discovery. 7 
Of the Batrachians I saw but few examples. The 
African bull-frog is occasionally noticed (Towropterna 
* The number is variable. 
T Possibly it may belong to this genus. 
t See illustration, p. 246. 
