ENTOMOLOGICAL NEWS. 375 
eric TE i eithlelca sR aehogt 0 pale spot on each eldel annie 
a a very small one; spot on pleura small or wanting ; no lines 
eemememesonotum ............-.... monodonta. 
ater black, except a smail spot on each side of second and third 
_-—sS@gments ; band on first abdominal segment dentate in mid- 
dle ; markings greenish or pale yellowish. 
4 eee monodonta argentifrons. 
<3 monodonta monodonta 5). 
sips This subspecies seems to be eastern. The female described 
he (p. 362, v, Bull. U. S. Geol. Survey) was from 
os (loc. cit., p. 363) describes the specimens from Kanies as dif- 
. x from the eastern ones in much the same way as occiden- 
re monodonta occidentalis subsp. n. 
1e characters in the above table will separate this subspe- 
from monodonta monodonta its nearest ally. The markings 
Dee cecaess before us are greenish. The silvery pile 
§ usually quite dense. We have specimens from Paris, Tex. 
. © R. Jones), and Colo. 
2 
ce 
Ai SUMMiahes menstenta neemexieana subsp. 1. 
: 
2 
4 
This subspecies seems quite distinct. The dentation of the 
_ first abdominal band, the mostly black venter, the yellow cly- 
__- peus and labrum make it easily recognized. The markings 
| vary from greenish-white to pale yellow. On the average it 
) is smaller than the two preceding subspecies. Many speci- 
mens from Las Cruces New Mexico, August 3oth, at flowers 
of Solidago canadensis (C. H. T. Townsend). 
Microbembex monodonta deltaensis subsp. ». 
The table will separate this from the other subspecies. The 
_ markings are lemon-yellow. The sides of the venter beyond 
"the second segment, and the second ventral segment except 
