202 LIST OF HOMOPTEROUS INSECTS. 



^153. Cicada tricolor, Mas. 



Nervus transversus lus subcurvus, obliquus, angulum subacutum 

 fingens, 2o duplb ejus longitudine divisus ; 2us subcurvus, fere 

 erectus, angulum obtusum Jingens, \o paullb brevior ; 3us sub- 

 curvus, obliquus, angulum subacutum fingens ; Aus fere rec- 

 tus, angulum acutum fingens, 3o obliquior et multb longior. 



Second marginal areolet a little lonoer than the first : first 

 cross-vein very slightly curved, slanting, forming a slightly acute 

 angle, parted from the second by twice its length ; second verj' 

 slightly curved, nearly upright, forming an obtuse angle, very little 

 shorter than the first ; third very slightly curved, slanting, forming 

 a slightly acute angle; fourth nearly straight, forming an acute an- 

 gle, more slanting and much longer than the third ; fifth very slightly 

 curved, slightly slanting, forming a slightly acute angle. In the 

 insect described the first marginal areolet is interrupted by one ad- 

 ditional cross-vein in the left wing, and by two in the right. Body 

 fermginous : head hardly narrower than the fore-chest ; crown mostly 

 black ; face very slightly convex, hardly prominent, its disk black : 

 eyes not prominent : mouth tawny with a black tip : feelers black : 

 fore-chest linear, adorned with six broad black stripes ; middle pair 

 linear ; the other four oblique : sides straight ; a tooth at the base 

 of each fore-wing ; hind-sculcheon narrow : disk of the scutcheon of 

 the middle-chest mostly black, with a broad oblique ferruginous stripe 

 on each side ; excavation on the hind border : abdomen obconical, 

 hardly longer than the chest ; fore borders of the segments black ; 

 hind borders bright pale green: opercula small; tymbals pitchy; 

 drums small: legs ferruginous; feet pitchy; claws black; fore- 

 thighs armed with three long black teeth : wings and flaps colour- 

 less ; veins and fore borders ferruginous ; an additional cross-vein 

 dividing the first marginal areolet. Length of the body 5 lines ; of 

 the wings 13 lines. 



a. Venezuela. From Mr. Stevens's collection. 



^ 154. Cicada nana, Mas. 



Nervus transversus lus rectus, erectus, angulum obtusum fingens, 

 '2o triplb ejus longitudine divisus ; 2us rectus, obliquus, angu- 

 lum valde obtusum fingens, \o paullb longior ; 3us rectus, sub- 

 obliquus, angulum rectum fingens ; Aus fere rectus, angulum 

 acutum fingens, 3o multb obliquior et longior. 



First cross-vein straight, upright, forming an obtuse angle, 

 parted from the second by thrice its length ; second straight, slant- 



