New Species of Sierola, With Explanatory Notes. 
Clypeal process not spicate, either spatulate 
or simple 
Clypeal process spatulate, distinctly contract- 
ed at the base 
Head considerably longer than wide 
Head as wide as long or nearly so 
Vertical margin of the head conspicuously 
concave 
Vertical emargination deep, head a_ little 
wider than long, expanded behind the 
eyes, clypeal process short 
Vertical emargination shallow, head a little 
longer than wide, clypeal process moder- 
ately long 
Vertical margin of the head straight or near- 
ly so 
Head a little longer than wide, width between 
the eyes only slightly exceeding the length 
from eyes to vertex 
Head as wide as long, width between the 
eyes considerably more than the length 
from eye to vertex 
Head large, shining black 
Head small, brilliant black, length behind the 
eves not great 
Clypeus simple, without contraction at the 
base, either carinate or flat dorsally 
Clypeus without carina 
Body particolored 
Head almost smooth and shining 
Head coarsely sculptured and dull, opaque or 
nearly so 
Body entirely black 
Body thick-set, not slender or depressed 
Width between the eyes not much greater 
than the length from eye to vertex, tem- 
ples full 
Width between the eyes nearly twice the 
length from eye to vertex, temples 
rounded 
Body more or less slender or depressed, not 
thick-set 
Head much longer than wide 
Legs fuscous to black 
Legs luteous 
Head as wide as long or nearly so 
Slender, somewhat depressed, head without 
great depth, antenne short, propodeum 
smooth 
[6] 
ri 
16. 
1 
to 
— 
to 
to 
curvignatha 
emarginata 
giffardi 
suttoniae 
mut 
rocki 
bicolor 
aristoteliace 
anthracina 
konana 
angustata 
levis 
brevicornis 
