1928] Table of North American Species of Medeterus 
41 
Last section of fifth vein scarcely longer than the cross-vein, 
(Washington; Alaska), female of viduus Wheeler.. 
33 Mesonotum with thick brown pollen 34 
Mesonotum with thin grayish pollen 36 
34 Fore coxae almost bare, except a few black bristles at tip; 
large species, (Ontario; New York) 
emarginatus Van Duzee. 
Fore coxae with a row of hairs or bristles on outer anterior 
edge 35 
35 Hypopygial lamellae black, (Alaska) viridifacies Y an Duzee. 
Hypopygial lamellae yellow, (Alberta) trisetosusY an Duzee. 
36 Last section of fifth vein one and a half times long as the 
cross vein 37 
Last section of fifth vein not but little longer then the 
cross vein 40 
37 Cilia of the calypters black, (Illinois) . . . coerulescens Malloch. 
Cilia of the calypters pale 38 
38 Fore coxae with black hair, (New Hampshire) 
maurus Wheeler. 
Fore coxae with pale hairs 39 
39 Middle femora with yellowish bristles below; second joint 
of hind tarsi one and three fourths times as long as the 
first, (Alaska) bicolor Van Duzee. 
Middle femora without yellowish bristles below; second joint 
of hind tarsi one and a third times as long as first, (Alaska). 
* parvus Van Duzee. 
40 Hypopygial lamellae black; second joint of hind tarsi one 
and three-fourths times as long as first; last section of 
fifth vein in male three fourths, in female a little more 
than the length of the cross-vein, (Oregon) 
oregonensis Van Duzee. 
Hypopygial lamellae yellowish; second joint of hind tarsi one 
and a half times as long as first; last section of fifth vein 
and the cross- vein of nearly equal length, (Alberta), male 
of trisetosus Van Duzee. 
41 Abdomen blue 42 
Abdomen bronze, green or black. . . .43 
