202 LIST OF HOMOPTEROUS INSECTS. 



153. Cicada tricolor, Mas. 



Nervus transversus \us subcurvu&^ obliquus, angidum suhacutum 

 fingeiu, 2o duplb ejus longitudine divisus ; 2us subciirvus, fere 

 erectus, angidum ohtusumjingens, \o paidlb brevior ; 3us sub- 

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

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



Second marginal areolet a little lono^er than the first : first 

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

 angle, parted from the second by twice its length ; second veiy 

 slightly curved, nearly upright, fomaing 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, foraiing 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-scutcheon 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 \us rectus, erectus, angidum obtusion fingens, 

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

 lum valde obtusion fingens, lo paidlb longior ; "iius rectus, sub- 

 obliquus, angulum rectum fingens ; -Aus fere rectus, angulum 

 acutum fingens, 3o multb obliquior et longior. ' 



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

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



