LIST OF HOMOPTEROUS INSECTS. 151 



89. Cicada Torrida, Mas. 



Nervus transversus lus subundatus, obliquus, anguhnn valde ohtu- 

 sum fingens^ '2o fere triplo ejus longitudine divisus ; 2us cur- 

 vus, obliquus, angulum valde obtusiim Jingens, \o brevior ; 

 ^us subundatus^ obliquus, angulum vix acutum jingens ; 4w.v 

 subcurvus, obliquus, angulum vix acutum Jingens, 3o longior. 



First cross-vein slightly waved, slanting-, forming a very obtuse 

 angle, parted from the second by near thrice its length ; second 

 curved, slanting, forming a very obtuse angle, shorter than the first ; 

 third very slightly waved, slanting, forming a hardly acute angle ; 

 fourth slightly curved, slanting, forming a hardly acute angle, longer 

 than the third ; fifth curved, nearly upright, forming a slightly acute 

 angle. Body tawny, partly clothed with pale down : head nearly as 

 broad as the fore-chest ; an interrupted black band on the crown ; 

 face convex, pitchy on each side, adorned w^ith a yellow stripe : 

 mouth tawny with a black tip, reaching the hind-hips ; eyes rather 

 prominent: feelers black : scutcheon of the fore-chest adorned with 

 two black stripes which are widened on the fore border and on the 

 hind border and converge towards the latter ; hind-scutcheon narrow 

 in the middle, widened and forming an obtuse angle at the base of 

 each fore-wing, not excavated on each side : scutcheon of the mid- 

 dle-chest adorned with four pitchy stripes which do not extend be- 

 yond half the length ; inner pair straight ; outer pair slanting ; hind 

 border slightly excavated : abdomen slightly obconical, longer than 

 the chest: opercula none; tymbals tawny ; drums small, paletawnyj: 

 legs tawny ; tips of the claws black ; fore-thighs armed with two 

 small tawny teeth : wings colourless ; primitive areolet tawny ; fore 

 border and veins tawny, black towards the tips ; fore-flaps pale 

 brown ; hind-flaps pale brown at the base and along the middle- 

 vein. Length of the body 9 lines ; of the wings 30 lines. 



a. British Guiana. From Sir R. Schomburghk's collection. 



b. Demerara. 



90. Cicada invaria, Fern. 

 Nervus transversiu^ lus valde curvus, subundatus, obliquus, angulum 

 acutum Jingens, 2o quadrupld ejus longitudine divisus ; 2us 

 subundatus, obliquus, angulum obtusum Jingens, \o viultb 

 longior; 3us fere rectus, subobliquus, angulum rectum fin- 

 gens; Aus subundatus, obliquus, angulum subacutum Jingens, 

 3o multb longior. 



Second marginal areolet a little more than half the length of 

 the first: first cross-vein much curved, slightly waved, slanting, 



