ENTOMOLOGICAL NEWS. 373 
~~ Colorado Bembicidae. 
By S. A. Jounson ann S. A. RoHWER. © 
‘The main object of this paper is to give the distribution, 
lin the State, of the species which are known to occur 
ind to add a few species which have hitherto not been 
Tepor The notes are based principally on the collection 
‘of the Colorado Agricultural College, but a few species have 
taken by the junior author. 
make the paper more complete, tables to separate the 
_ The family may be separated into two distinct subfamilies 
be e- le bie with two spurs at apex ; ocelli normal, round. . . Stizina. 
with one spur at apex ; ocelli more or less abnormal, espe- 
Cially the anteriorone......4...... BEMBECIN-. 
Srizin &. 
cell much longer than the first cubital ; species large. 
a ak ete eS et both large and small 
NS TS TRE ee Stizus Latr 
Ae & SPHECIUS Dahlb. 
ae This 2 0 small genus, containing but four species in the 
United States. These are all southern forms. There is but 
__ ome species known from Colorado, S. sfeciosus Drury. We 
ie _ Ihave two females and a male from Las Animas, Col., August 
os ‘aes The thorax is rufous. 
& 
STIZUS |atr. 
Species large ; metathorax not emarginate posteriorly ( Megastizus). . 
Species smaller, about 10 mm. ; sretatboatice:-aeneaihdaanlaa aan 
(Stizus) 
1, Wings mostly blue-black ; first and second transverse cubiti meeting, 
or nearly so, on the radial ; second dorsal abdominal segment 
: with a rufous band, other segments black. . . unicinctus Say. 
_ Wings hyaline ; first and second transverse cubiti distinctly separated 
on radial ; abdomen with many pale spots or bands. 
. brevipennis Walsh. 
¥ e 
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