Hl<j 
S- 
BULLETIN 
OF THK 
Vol. 22. Salem: Jan., Feb., Mar., 1890. Nos. 1-2-3. 
ON THE SPECIES OF THE GENUS CHALCINUS 
IN THE MUSEUM OF COMPARATIVE 
ZOOLOGY AT CAMBRIDGE, 
MASS., U. S. A. 
BY S. GARMAN. 
The Thayer Expedition of Professor L. Agassiz and his 
party, to Brazil, collected a large number of duplicate speci- 
mens of species of Characinid^e. In preparing these for dis- 
tril)ution to the correspondents of the Museum they have 
been identified from the original descriptions with results 
that do not agree with others of recent publication. As a 
consequence of disagreement with the constitutions of the 
genera as heretofore accepted, it is thought advisable to 
publish the conclusions in this place. 
There are several general features of Chalcinus that de- 
serve a few words of notice before dealing with the sepa- 
rate species. The labial folds and the barbels are present 
on each of the various forms, with the possible, but un- 
likely, exception of C. paranensis. The latter is known 
to me only by the description, yet it agrees so closely with 
ESSEX INST. BULLETIN, VOL. XXII 1 (1) 
