100 



PRELIMINARY LIST 



Tbamnotettix sonorae n. sp. 



Face one-sixth wider tlian long; clypeus one-lialf 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 margin 

 broadly rounded; front a third longer than broad, two 

 times the length of the clypeus, gradually narrowing to 

 the clypeus, superior angle rather sharp. 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). 



Thaiunotettix [Jassiis] teiiella Uhl. Det, YanDuzee. 



Grand Junction, A_ugust 26th, common on sugar beet. 



This species, the description of w^hich we have not seen, is 

 referred to Thamnotettix on Mr. VanDuzee's suggestion^ 

 though it seems to be a Limotettix. 



J^iitettix clarivida VanD. Det. VanDuzee. 



Colorado (VanDuzee, 4), 



Montrose, June 24th (Gillette). 



I^utettix (I^iniotettix) exitiosa Uhl. 

 Colorado (VanDuzee, 4). 



Colorado Springs, August (Tucker). 



I^utettix incerta n. sp. 



Face one-eleventh wider than long; clypeus fully one-half as long as broad, consid- 

 erably constricted on the basal two-thirds, broadest near the rounded apex; basal suture 

 curved; lorae as long and nearly as broad as the clypeus; genae broad, feebly depressed 



