Sarcoborine. INDIAN CYPRINID&. Salk 
Leuciscus and Opsarius among the Sarcoborine. It remains, however, to be 
determined from the materials of other parts of the world, whether the 
Catastomi and Labes may not be united with the Cirrhini, and Cyprinus 
carpio with the Barbels, or retained as the type of distinct groups to which 
Cyprinus semiplotus, J. M. and other similar species may be united. It 
remains in like manner to be determined, whether the Breams are to be placed 
with the Peonomine, or, as the only Indian species indicates, with the Sarco- 
borine ; and in the latter case, if they may not be united in one group with 
the Perilamps. 
It is these doubts, which can only be settled by a direct appeal to the 
species of other countries, that renders a comparison of the two groups in this 
place somewhat unsatisfactory. Without attempting to speculate on the 
subject, we may at once compare together those genera in both sub-families 
with which we are best acquainted. 
The head and body in the genus Barbus are long, and slender, but in the 
genus Systomus short and deep: the Barbels blend in their direct’ affinities 
with the herbivorous forms ; and the Systoms with the carnivorous. The same 
result will attend the comparison of any of the other groups of the two sub- 
families, as the Opsarions and Barbels : both have the body and head long and 
slender, and are the most carnivorous in their respective groups ; both have 
short dorsal fins, and the head much elongated behind the eyes; but here 
their relations end. The Barbels are without an armature on the jaws, and 
have a long, narrow stomach and intestinal canal, and feed upon small fishes 
and plants: the Opsarions, on the other hand, have a capacious fleshy stomach, 
an armature on the lower jaw, and the power of seizing and swallowing piece- 
meal species wonderfully approaching their own size. In the one case the 
characters blend with the herbivorous, in the other with the carnivorous 
Cyprins; thus proving such relations as do exist to be those of analogy, and 
not of affinity. The affinities of the Barbels are indeed well understood to 
be confined to the Peonomine. The direct affinities of the Opsarions with 
TG 
