~ 
364 Review of some recent American 
original application of each name, and, in some cases, the no- 
menclature has been so modified that the first impulse of many 
paleontologists will be to dissent therefrom, but if the rules 
adopted—those recommende oth the British and American 
ubcciations for the Advancement “of Science—are accepted, the 
correctness of such modifications must be admitted. In all cases, 
the typical species of the genera are enumerated immediately after 
the diagnoses of their respective genera. Would that sucha plan 
had always been pursued by naturalists! Nope but the critical 
sos gh td of such questions can know how tnuch uncertainty 
how many disputes nen a pare of nomenclature 
ieuld have been thereby avoided, and he who, at this late day, 
and in face of the lessons of she past, still refuses to thus limit 
a newly established group, is deserving of reproach. If, for ex- 
ample, the simple precaution had been taken by the Messrs. 
re ams in the “Genera of Recent Mollusca,” of cine the 
types of their numerous new subdivisions, how much confusion 
would have been saved! As it is, we must be iy a ee to know 
what types to apply their names to in many cases. Shall we take 
the first named species? It is only by accident of its position in 
an alphabetical arrangement that it is so placed, and it perhaps 
does not agree with the diagnosis, which often defines a very ar- 
tificial group combining types dissimilar, and violently severed 
from their allies. Again, how are we to know what species are 
intended, when no synonymy is given and they are for the first 
time associated under new genera, by the specific parts of their 
namesalone? <As has been intimated, ‘is applicability of the diag- 
nosis is no criterion, and, in several cases, the species intended 
the authors have been mistaken. It is a question whether we 
would not — justified in A en en to names thus 
ve as in courtes 
ether ee first a rated or confirmed by reference to 
” ne: ted Ohman tructure. new genera, may be enume- 
a foot note identical with Anthra- 
pote neces veemlaneranane tet eet Phe suvat of that 
escription of Salter’s genus having since come to hand, kaon ag 
ae two are entirely distinct. ee as 
