20 LIST OF HOMOPTEROUS INSECTS. 



tween the inner pair there is a black stripe which is widened in the 

 middle, and assumes a diamond form, and has a black spot on each 

 side; hind border very slightly excavated: abdomen obconical, not 

 longer but a little narrower than the chest, black towards the base 

 beneath: opercula pale tawny, close, rather small; drums rather 

 large, pale tawny, slightly overlapping, one-third of the length of the 

 abdomea : legs pale tawny ; thighs tinged with green, slightly 

 streaked with brown ; claws black, lawny at the base ; fore-thighs 

 armed with a very short tooth which hardly rises above the surface ; 

 tips of the hind-thighs and of tlie four hinder shanks pitchy ; hind- 

 shanks armed with pitchy spines ; fore-feet black ; middle-feet black 

 at the base and at the tips: wings colourless; fore-wings indis- 

 tinctly tinged with brown along the hind border, which is adorned 

 with a double row of pale brown spots ; first, second, and third 

 cross-veins clouded with brown ; fore border beset with very short 

 spines, green as far as the pitchy brand, tawny from thence to the 

 tips ; veins ferruginous, black towards the tips. The specimen de- 

 scribed has near the base of the third marginal areolet of the left 

 wing an additional cross-vein which is tinged with brown. Length 

 of the body 10 lines ; of the wings 42 lines. 



a. Port Natal. From M. Gueinzius' collection. 



26. Platypleura? semiclaea. 

 Cicada semiclara, Germ. Silb. Rev. Ent. ii. 82, 59. 



27. Platypleura semilucida, Mas. 



Nervus transversus ]us rectus, erect us, anqulum rectum jingens, 

 2o octies ejus longitudine divisus ; 2iis fere rectus, valde oh- 

 liquus, angulum valde obtusum fingcns, \o tripld longior ; 

 3ms subundatus, raUle obliquus, angulum valde acutum fin- 

 gens ; 4us fere rectus, obliquus, angulum suhacutum fingens, 

 3i dimidio brevior. 



Second marginal areolet very nearly as long as the first : first 

 cross-vein straight, upright, forming a right angle, parted from the 

 second by full eight times its length ; second nearly straight, very 

 oblique, forming a very obtuse angle, about thrice the length of the 

 first ; third slightly waved, very oblique, forming a very acute angle ; 

 fourth nearly straight, oblique, forming a slightly acute angle, not 

 half the length of the third ; fifth curved abruptly to the hind bor- 

 der, forming a hardly acute angle In this species and in P. gemina 



