New Species of Hawarvian Hymenoptera. i) 
S localis, Sm., 1s represented by one O. radula, Fab., 
only. 
Crabro adspectans, Bl., is my Nesocrabro daemonius, which 
becomes a synonym. 
Crabro mauwiensis, Bl., is a yellow-spotted 2 of Crabro 
mandibularis, Sm. 
The female Crabro suggested as belonging to the ¢ of 
C. abnormis, Bl., is the 2 of my Hylocrabro tumidoventris, 
the ¢ of which occurred in the series of Xenocrabro 
unicolor, Sm. 
The Blackburnian specimens of Mimesa antennata, 
as named by Smith, were a closely allied species, my 
Nesomimesa nitida, 
Nesoprosopis facilis, Sm., on which Blackburn published 
some remarks, included also J. koac, P., from Oahu, and 
NV. difficilis from Hawaii. 
A long series of LV. blackburni, Sm., of which I have 
seen the types, contained only one true blackburni, most 
of the specimens being JV. longiceps, P., with N. obscwrata, 
P., from Hawaii. 
It is proper to remark that in Odynerus the characters 
of the second ventral segment being at the time the 
Hawaiian insects were described hardly ever utilised by 
hymenopterists, and the concealed male terminal segments 
ot Prosopis not at all, the confusion of species is not at all 
to be wondered at. 
O. conifer, P., subsequently referred by me to the genus 
Nesodynerus, was wrongly so referred. The specimen that 
J examined was an old one, and no doubt had the calcaria 
broken. They are present in the type. 
Pison argentatum, Sh. This is a recent introduction 
into the Hawaiian islands, and the species was kindly 
determined for me by Mr. R. E. Turner. It was described 
from Mauritius, and is also recorded from Singapore 
and Borneo. I have no doubt it will be found to 
occur in China or Japan, and was thence introduced 
into Honolulu. 
3B2 
