100 
PRELIMINARY LIST 
Thamnotettix sonorae n. sp. 
Face one-sixth wider than long; clypeus one-half longer than broad, slightly con¬ 
stricted at the middle, basal suture curved; lorae three-fourths as broad as the clypeus- 
and slightly longer; genae broad, hardly depressed beneath the eyes, outer margins 
broadly rounded; front a third longer than broad, two 
times the length of the clypeus, gradually narrowing to 
the clypeus, superior angle rather shai^>. Front and an¬ 
terior half of vertex rather coarsely shagreened. Disc of 
the vertex scarcely depressed, a third longer at the middle 
than next the eyes, width between the eyes twice the length 
at the middle. Pronotum two times wider than long, length 
little less than twice that of the vertex, curvature one- 
half of the length, scattered shallow punctures on the pos¬ 
terior two-thirds, posterior margin concave, sides short. 
Scutellum with a small depression just before the apex. 
Last ventral segment with the hind margin truncate 
with a deep narrow notch. Color pale yellow. Face 
pale yellow. Two small transverse spots on the base 
of the clypeus, and a large spot beneath the antennae, 
black. Vertex pale yellow with two large approximate 
black spots on the apex, and a small black spot on either 
side back of the ocelli. Pronotum greenish yellow washed 
with sulphur yellow. Scutellum pale sulphurous yellow 
with transverse groove broadly black. Elytra smoky sub¬ 
hyaline, nervures sometimes darker towards the tip. Ven¬ 
ter pale yellow, first segment black. Legs pale yellow, 
tips of tarsi infuscate. 
Length 4.5 mm. Described from two females. 
Dolores, June 18th (Gillette). 
Thamnotettix ( Jassus ) tenella Uhl. 
Det. VanDuzee. 
Grand Junction, August 26th, common on sugar beet. 
This species, the description of which we have not seen, is 
referred to Thamnotettix on Mr. VanDuzee’s suggestion,, 
though it seems to be a Limotettix. 
Eutettix clarivicla VanD. 
Colorado (VanDuzee, 4). 
Det. VanDuzee. 
Montrose, June 24th (Gillette). 
Eutettix ( limotettix) exitiosa Uhl. 
Colorado (VanDuzee, 4). 
Colorado Springs, August (Tucker). 
Eutettix incerta n. sp. 
Face one-eleventli wider than long; clypeus fully one-half as long as broad, consid¬ 
erably cons’ ricted on the basal two-thirds, broadest near the rounded apex; basal suturt 
curved; lorae as long and nearly as broad as the clypeus; genae broad, feebly depressed 
