LIST OF HOMOPTEROUS INSECTS. 27 



of the prothorax narrow, very slightly dilated on each side. Meso- 

 thorax hardly excavated on the hind border. Drums large ; no 

 dorsal opercula ; ventral opercula tawny, of moderate size. Wings 

 vitreous ; veins piceous. Fore wings acuminated, very slightly 

 tinged with brown along the exterior border, with a dark brown 

 hind basal streak ; first and second transverse veins oblique, 

 straight; first about half the length of the second, from which it is 

 parted by about thrice its length ; third and fourth straight, oblique, 

 about equal in length. Fold of the hind wings brown towards the 

 base. Length of the body 8 lines ; of the wings 26 lines. 



a. West Africa. From Mr. Fraser's collection. 



Cicada albivenosa. 



Mas. Nigra, dense pubescens ; caput parvum ; prothoracis margo 

 perangiistus, lateribus valde dilatatis ; abdomen subtus ferra- 

 gineum ; opercula testacea ; pedes picei ; alee vitrece, venls 

 albis. 



Male. Black, thickly pubescent. Head small, narrower than 

 the prothorax, hardly convex in front. Prothorax with a very nar- 

 row ferruginous border, which is much dilated on each side. Abdo- 

 men ferruginous beneath. Opercula testaceous. Legs piceous. 

 Wings vitreous ; veins white. Fore wings with the first and second 

 transverse veins slightly curved, nearly upright ; first parted from 

 the second by nearly thrice its length ; third and fourth oblique, 

 slightly curved. Length of the budy 5^ lines ; of the wings 13 

 lines. 



«, b. Port Natal. From M. Gueinzius' collection. 



Cicada viridula. 



Mas. Pallide viridis ; caput ang us turn; abdomen crassum ; pedes 

 breves, graciles ; femora antica subspinosa ; alee parva, vitrece. 

 venis pallide viridibus. 



Male. Pale grass-green. Head narrower than the prothorax, 

 very slightly convex in front. Eyes prominent. Prothorax narrower 

 in front ; border very narrow, hardly dilated on each side. Abdo- 

 men thick, broader than the thorax. Legs short, slender ; fore 

 iemora thick, with very minute spines. Wings small, vitreous ; 

 veins very pale green. Fore wings with the first and second veins 



d2 



