280 Scientific Intelligence. 
pial mammals. Want of space forbids us to make extracts from the 
recorded observations, and we must remain satisfied with referring to the 
text and plates of the report. 
f the Cyprinoids, numerous genera and species are described from 
species of which there are no barbels, and the teeth are of “the grinding 
type and cultriform kind ;” 4. Pognichthyi, in which barbels are present, 
the snout is prominent, and the pharyngeal teeth are more or less hooked ; 
Alburni, which ditfer from the Pogonichthyi by the absence of 
barbels. 
The author has devoted much time and research to these groups, and 
all of the genera may be good, but some of them appear to distin- 
guished on quite slight grounds, and many of the species are small and 
perhaps the young of others. But on this question we will not venture 
to disagree with Dr. Girard. 
Most of the new genera have received Indian names, and although not 
cacophonous, some of those names appear strange to ears that have been 
mostly accustomed to Latin and Greek derivatives, 
n Dionda, a genus of Cyprinoids, Dr. Girard has named two species 
collected by Capt. John Pope, Dionda episcopa and D. Papalis. 
The genus “ Argyreus Heckel” is synonymous with Rhinichthys of 
Agassiz. It is not probable that Dr. Girard will be sustained by Ichthy- 
ologists in this application of Heckel’s name. An extract from the re- 
marks of the learned Doctor himself on the nomenclature of the genus 
will show the history of the name Argyreus. 
_“ Heckel includes in this genus two species which are generically dis- 
distinct Cyprinus atronasus Mitch., and Cypr. rubripinnus Mus. Par. MS. 
¢ 
teeth figured by Heckel under the name of Argyreus rubripinnis are those 
of Plargyrus cornutus.” 
The diagnosis and illustration of Argyreus having been by Heckel 
‘ rage F onasus, 
q 
Heckel would scarcely have referred a species of Rhinichthys to the same 
genus as C. rubripinnis if he had known the pharyngeal teeth, and he 
could only have done so from’ an ignorance of the species. Because 4 spe- 
cies on which a genus is established belongs to a previously named genus, 
it by no means follows that the generic name has to be used for another 
species of the genus, when it proves to be distinct from the type. | 
If the above views are correct, Rhinichthys will have to be retaine 
