256 DAVENPORf ACADEMY OF NATURAL SCIENCES. 



when opposite the antennae it is as wide as at any point ; from this 

 point it is sub-parallel and sulcate with raised walls. The antennae 

 are shorter than (female) or about equal to (male) the head and prono- 

 tum. They are coarse, somewhat flattened, especially on the apical 

 portion where they are somewhat clavate and more (male) or less (fe- 

 male) acuminate. The eye is rather long, not especially prominent. 

 The occiput is much (male) or little (female) elevated. The pronotum 

 has the disk of the prozone strongly convex, that of the metazone more 

 nearly flat, with its sides rapidly divergent and the posterior margin 

 strongly rounded. The median carina is quite distinct on the meta- 

 zone, very faint on the prozone except in front of the anterior sulcus. 

 It is cut by all three sulci. The lateral carinae are entirely obsolete. 

 The lateral lobes of the pronotum are about as long as high, with the 

 anterior and posterior margins sub-perpendicular and both lower angles 

 strongly rounded. The prosternum is furnished with a very low, 

 rounded process. The lobes of the mesosternum and the metasternum 

 are transverse in the female, square in the male. The tegmina are 

 furnished with a distinct (female) or irregular and incomplete (male) 

 intercalary vein, and the plicate is soon united with the dividing vein. 

 The mediastine vein exceeds half the length of the wing in the female, 

 in the male it is much abbreviated and the scapular area is much ex- 

 panded, hyaline, and filled with a series of strong curved veins. The 

 valves of the ovipositor of the female are exerted, the lower furnished 

 with a large blunt tooth. The posterior femora are slender, equaling 

 (female) or surpassing (male) the abdomen in length. 



Bo'dtettix, Bruner, 1889. Proc. U. S. Nat. Mus., XII, 58. 



This genus contains but one known species. 



BooTETTix ARGENTATUS, Bruuer. Figs. 23a, 23b. 



Bootettix argenfatus, Bruner, 1889. Proc. U. S. Nat. Mus., XII, 59, 

 pi. i, fig. 4 (female), 5 (male). 



Bootettix argenfatus, To wnse n d, 1892. Can. Ent., XXIV, 198. 



Bootettix argentatus, Townsend, 1S93. Ins. Life, VI, 30. 



Bootettix argentatus, Scudder, 1893. 23rd Ann. Rept. Ent. Soc. 

 Ont., 76. 



This is an arboreal species, said by Mr. Bruner to be found only on 

 an evergreen species of Ceanothus. Since reported by Mr. Townsend 

 to be found on Larrea mexicana. The latter is an evergreen, and as 

 no evergreen Ceanothus. is given by either Gray or Coulter it is prob- 

 able that this species is confined to the single food-plant last mentioned. 



