PRELIMINARY LIST 
with white and pale orange on anterior and lateral margins; scuteHum Orange with 
whitish mottling; elytra subhyaline, smoky at base across median portion, and at tip, 
forming three broad indistinct trans verse bands, clavus and corium posteriorly, each 
with a”pale orange stripe, veins whitish apically; last ventral segment almost entirely 
whitish, pygofers rufous below; legs sordid white. 
Length 3 mm. Described from one female. 
In mountains south-west of North Park, July 10th, on 
Artemisia tridentata (Baker). 
Although we would think it unadvisable, as a rule, to 
describe Typhlocybidae from single specimens, we have con¬ 
cluded to do so with a few well marked uniques that we 
took the past season. 
Empoasca pura Stal. Det. Gillette. 
Fort Collins, June 24tli, and September 27th on Clematis 
ligusticifolia; Manitou, September 29th, on oak (Gillette). 
Our specimens referred to this species may prove to be 
new as we have not seen types. Our specimens answer to 
the description of pura. 
Empoasca ( Kybos ) smaragdula Fall. Det. Gillette. 
Colorado (VanDuzee, 4). 
Spring Canon, eight miles south-west of Fort Collins, June 
80th to July 12th; The Rustic, Larimer County, August 11th 
(Gillette,. Steamboat Springs, July 15th on willow (Baker). 
Cheyenne Canon, Colorado Springs, July (Tucker). 
The genus Kybos must fall under the older name 
Empoasca. Specimens of K. smaragdulus received through 
Mr. VanDuzee from France (Lethierry) show a typical 
Empoasca wing and elytron and we can find no generic 
characters to separate it from that genus. 
Empoasca typlilocyboides n. sp. 
Male: Clypeus subacute at apex, one-fiftli longer than broad, basal suture straight; 
lorae one-half as wide and two-thirds as long as clypeus; genae narrow, not attaining tip 
of clypeus, furrow shallow, outer margin slightly concave over coxae, slightly convex 
along lorae; front one-fourth longer than broad, nearly 
twice the length of clypeus, superior angle broadly 
rounded. Face and vertex nearly smooth. Length of ver¬ 
tex at middle nearly once and a half that next the eyes. 
Pronotum slightly less than twice as broad as long, pos¬ 
terior two-tliirds minutely transversely rugose, front 
margin broadly rounded, hind margin concave, posterior 
angles broadly rounded. Scutellum broader than long, transverse groove straight. 
Color pale bluish or yellowish green; face and vertex pale yellow: pronotum pale yellow 
