234 REPORT OF STATE GEOLOGIST. 



e. Pronotum with the sides elongate, the length on 

 dorsal margin greater than the depth; the 

 disk of one color; lateral carlnse parallel 



throughout XIX. Dicromorpha, p. 238 



ee. Pronotum with the sides not elongate; the disk 

 particolored; the lateral carinse diverging both 



before and behind the middle 



XX. Orphuleli.a, p. 239 

 (hi. Antennae long, about or moi*e than half as long again 

 as head and pronotum together; fastigium of ver- 

 tex Avlth a median carina. .XXI. Chlcealtis, p. 243 

 <i(i. Foveola of the vertex always present; visible from above; face less 

 oblique than in the preceding genera. 



f. Tegmina without Avell developed elevated 

 intercalary vein. Median carina of pro- 

 notum not high and sharp, never cut 

 plainly in front of middle by the princi- 

 pal sulcus • 



y. Apical spurs on inner side of hind 

 tibiae equal in length; lateral carinse 

 of pronotum distinct throughout 

 their full length; broadest part of 

 male tegmina lying beyond the mid- 

 dle. .. .XXII. Stenobothrus, p. 24G 

 (f!/. Apical spurs on inner side of hind 

 tibiae very unequal in length, the 

 inferior twice, or nearly twice as 

 long as the superior; lateral carinae 

 of pronotum distinct only on meta- 

 zona; broadest part of male tegmina 



lying at the middle 



XXIII. Ageneotettix, p. 248 

 ff. Tegmina with strongly developed, ele- 

 vated, intercalary vein. Median carina 

 of pronotum rather high and sharp, cut 

 plainly in front of middle by principal 

 sulcus XXIV. Mecostethus, p. 249 



XVTT. Tryxalis Fabricius (1775). 



Vertex horizontal, semi-elliptical, projecting in front of the eyes 

 to a distance about equal to that between the eyes; furnished with a 

 delicate median carina. Lateral foveola wholly wanting. Face, 

 viewed from the side, sloping strongly backward. Antennae flattened 

 at the base, acuminate, about as long as the head and pronotum. 

 Disk of pronotum plain, the three caringe parallel, distinct, the me- 

 dian cut by one sulcus much behind the middle. Lateral lobes of the 

 pronotiim perpendicular and parallel, a little longer than high, with 



