122 THE UNIVERSITY SCIENCE BULLETIN. 
KEY TO GENERA. 
A. Last antennal segment longest. 
B. Ocelli in contact with inner margin of the eyes. 
Macrovelia. 
BB. Ocelli absent. Microvelia. 
AA. First antennal segment longest. 
B. Third segment of middle tarsus split and with feathery hairs 
set in the silt. Rhagovelia. 
BB. Intermediate tarsi not split. Velia. 
Genus MICROVELIA Westw. 1834. 
Westwood, Ann. Soc. Ent. Fr., III, p. 647. 
“All the members of this genus are small, compact bugs. Both winged 
and wingless forms occur. The legs are rather short and stout. The 
fore tarsi are 2-segmented, the two hind pairs 1-segmented. The eyes 
are hemispherical, placed next to the pronotum. Ocelli are absent. The 
hemelytra when present are as long as the abdomen, and have six con- 
secutive areoles, of which the basal are smaller than the others, while 
the apical ones emit two nerves.”—Uhler. 
Eight species listed for our range. Two of these are described in a 
periodical not available to the writer. A key for 6 species is possible. 
Bueno gives us a key to five species. (See Bulletin Brook. Ent. Soc., XI, 
p. 52.) Bueno has promised a monograph on this genus. 
BUENO’S KEY TO THE EASTERN MICROVELIA. 
In Bull. Brookl. Ent. Soc. 
The species M. signata Uhl., M. marginata Uhl., and M. robusta 
were not placed in the key because they were not in the range treated. 
A. Antenne comparatively short and stout, not exceeding length of 
head and thorax taken together; legs short and stout. 
M. atrato Bueno. 
AA. Antenne slender of varying lengths. 
B. Posterior tibize curved in male, straight in female; antenne 
short, not as long as head and thorax taken together; apterous 
male, long, slender, fusiform, female, short, broad, nearly 
orbiculate. M. borealis Bueno. 
BB. Posterior tibize straight in both sexes. 
C. Posterior tarsi 3-segmented. 
D. Antennal segment 3 longer than 1, 4 subequal to 
2 and 3 taken together; segments 3 and 4 slender, 
equally stout and of the same diameter through- 
out, 4 tapering at the end, antenne very long; 
hemelytra much marked with white. 
M. albonotata Champ. 
DD. Antennal segment 3 subequal to 1, 4 shorter than 
2 and 83 taken together, stouter than 3, fusiform; 
apterous form with dorsal patches of blue gray 
pile. M. fontinalis Bueno. 
CC. Posterior tarsi 2-segmented; antennal segments 1 and 3 
subequal, 4 much shorter than 2 and 3 taken together; 
apterous form with dorsal patches of silvery white pile; 
winged ee with unicolorous hemelytra. 
M. americana Uhl. 
ti 
a 
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