208 
Psyche 
[December 
I have nineteen specimens of Cyrtopogon maculosis, in none of 
which is there a trace of the curved claw-like spur at the apex of 
the front tibiae. I also have another specimen, almost indistin- 
guishable from the others, which has the spur strongly developed. 
This last specimen I refer to fallei in the genus Comantella. C. 
fallei has the fork of the third vein located before the posterior 
cross vein and the anterior cross vein at nearly three-fourths the 
length of the discal cell. Its bristles are stronger, the pygidium 
longer and the thoracic gibbosity more compressed than in 
maculosis, which has the anterior crossvein at the middle of the 
discal cell and the fork of the third vein opposite the end of this 
cell. Maculosis is referable to Curran’s new genus Eucyrtopogon. 
The genotype of Comantella is therefore fallei Back, synonym 
maculosis Curran, not Coquillett. Instead of being a highly 
variable character the terminal claw-like spur maintains its 
dignity as an ^‘atavic index” to the two main subdivisions of 
both the Dasypogoninse and the Laphrinse. 
Key to the North American Species of Cophura. 
Wings dark; abdomen and legs more or less reddish 2 . 
Wings more or less hyaline; abdomen black or blue-black, 
with pollinose spots 4 . 
2. Three deep black stripes on notum, the middle one geminate; 
wings uniformly brown; abdomen reddish-yellow. (Mex.) 
sodalis 0. S. 
Thoracic stripes brownish; wings in part clear toward 
apex 3 . 
3. Legs black, the knees, base of tibiae and part of tarsi 
yellow; abdomen brown-black, the hind margins of 
segments narrowly reddish. (Mex.) .... huinilis Will. 
Legs reddish, anterior femora darkened on outer posterior 
side; abdomen red, laterally white pruinose. (Tex.) 
hella Lw. 
4. Pollinose marks of abdomen large, extending along sides 
and more or less across front part of segments; tibiae 
reddish 5 . 
