Tue PsELAPHID2 OF NorTH AMERICA. 217 
As to classification, it is a matter of comparatively small 
moment whether we call a particular group genus or sub- 
genus, provided only the group be recognizable. Any varia- 
tion in nomenclature or classification will, however, be noticed 
appropriately in the proper place. 
As to the natural sequence of genera, now apparently con- 
tinuous, future discoveries in the Pacific region will perhaps 
necessitate some changes. If we take into account the fauna 
of other countries, the difficulties are greater, and will not be 
solved until more exhaustive investigation shall supply some 
forms now lacking. 
Having collected in different parts of the United States and 
obtained by exchange specimens from elsewhere, we have 
been enabled to compare most of the species described. Of 
the species not in our possession some have been borrowed 
for description here; the descriptions of such as we have not 
handled are inserted in their original form. Names not 
accompanied by sufficient description are merely mentioned. 
In the genus Bryaxes the section Frecchenbachia is most in- 
complete. Among the forms near to BL. rubicunda are many 
which cannot be kept asunder. In this case the extreme 
members of the series are described. We approve the sep- 
aration of Actzwm from Trimiuwm, and of Trizmzoplectus frcm 
Luplectus. The new genera present salient differences from 
the old ones, both in general form and in minor diagnostic 
characters. These changes may meet with criticism. We 
have exercised our best judgment, and shall be first to welcome 
any arrangement that can be shown to be better. 
“oo. . ll. dum loguimur fugerit invida 
At tas.” | 
We shall always thankfully consider ourselves under obliga- 
tions, for valuable information and specimens, to Dr. David 
Sharp, London, Eng.; to Capt. Thos. L. Casey, U.S. A., for 
various assistance and contributions; to Charles and Marie 
Fuchs, of San Francisco, California, for many important con- 
tributions. 
