LIST 01' HOMOPTEROUS INSECTS. 



153. Cicada tricolor, Mas. 



Nermis transversus lus subcurviis, ohliqnus, angulum subacuium 

 fingens, 2o duplb ejus longiludine dhisus ; 2us subcurvus,feri 

 erectus, angulum obtusum fingens, \o pmdlb brevior ; 3us sub- 

 curvus, obliquuSy angulum subacuium fingens ; 4u.v feri! rec- 

 tus, angulum aculum fingens, 3o oblipdor et multh longior. 

 Second marginal areolet a little lonner than the first : first 

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

 angle, parted from the second hy twice its length ; second very 

 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 

 ferruginous : 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 blight pale green : opercula small ; tyinbals 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 trij)lb ejus longitudine divisus ; lus rectus, nbliquus, angu- 

 lum valdi obtusum fingens, \o pautlb Inngior ; 3tts rectus, sub- 

 obliquus, angulum rectum fingens ; iusfer^ rectm, 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- 



