1928 ] Table of North American Species of Medeterus 
39 
11 Femora mostly yellow; mesonotum and abdomen light green. 
. (California) longinquus Van Duzee. 
Femora mostly black; mesonotum coppery; abdomen dark 
green, (California) aeneus Van Duzee. 
Femora mostly black; mesonotum nearly opaque with gray 
pollen, so as to appear gray, (California) 
falcatus Van Duzee. 
12 Bright metallic species 13 
Darker species, usually blackish, sometimes very dark 
green 18 
13 Anterior tarsi plain 14 
Fore tarsi modified, ornamented 16 
14 First joint of hind tarsi only a little shorter than the second; 
length over 3 mm., (Guatemala). . .planipes Van Duzee. 
Posterior tarsi with the second joint twice as long as first.. . 15 
15 Legs altogether black; second joint of hind tarsi more than 
twice as long as first, (North America). . . .nigr.pes Loew. 
Legs wholly yellow; first and second joints of hind tarsi as 
19 to 37, (Eastern) aberrans Wheeler. 
16 Length 2 mm.; male with a lobe on the side of third joint of 
fore tarsi, (New Jersey; Ontario) lobatus Van Duzee 
Length 3 mm.; fore tarsi otherwise formed 17 
17 Fore tarsi a little widened from base to tip of second joint; 
third joint only a little narrowed at base, but suddenly 
narrowed to a slender projection, to which the fourth 
joint is attached; fourth and fifth joints slender, (Guate- 
mala). abruptus Van Duzee. 
Fore tarsi with the second and third joints very much com- 
pressed and expanded on upper edge; fourth and fifth 
joints minute, (Guatemala) .flavipes Van Duzee 
18 Bristles above fore coxae black 19 
Bristles above fore coxae pale, white or yellowish. 41 
19 Second joint of hind tarsi more than twice as long as first. 20 
Second joint of fore tarsi twice or less than twice as long as 
first 21 
20 Legs altogether black, (North America). . .nigripes Loew. 
Tibiae largely yellow, (Eastern) .vittatus Van Duzee.. 
