210 Mr. W. L. Distant on Homoptera. 



and apices of rostrum and tarsi, piceous ; tegmina and wings 

 hyaline ; tegmina with the costal membrane, postcostal 

 margin, basal cell, and base and margins of claval area 

 virescent, venation (excluding that of apical areas) viresccnt ; 

 a transverse spot beneath radial area, an irregular transverse 

 fascia crossing from end of radial area, longitudinal veins to 

 apical area, and the apical and outer margins pale fuscous ; 

 a basal streak pale sanguineous ; wings with a pale sangui- 

 neous basal streak, and the outer margins of the apical areas 

 pale fuscous. 



Long., excl. tegm., (^ 11 mm. ; exp. tegm. 26 mm. 



Hah. Chaco de Santiago del Estero, Bords du Rio Salado 

 {E. R. Wagner, Paris Mus.). 



Taipinga, gen. nov. 



Head (including eyes) a little narrower than base of meso- 

 notum, front very much shorter than vertex, which is distinctly 

 longitudinally sulcate at base, margins of front and vertex a 

 little discontinuous, breadth of front about equal to length of 

 margins of vertex ; pronotum about equal to, or slightly 

 longer than, head, the lateral margins slightly ampliate and 

 convex, the posterior angles ampliate ; mesonotum (including 

 cruciform elevation) about equal in length to head and pro- 

 notum together ; abdomen longer than space between apex of 

 head and base of cruciform elevation ; tympana entirely 

 exposed ; opercula in male about reaching base of abdomen ; 

 tegmina and wings hyaline, the first with the postcostal area 

 moderately broad, tlie basal cell about twice as long as broad, 

 and with eight apical areas; wing with five apical areas. 



Type, T. nana, Walk. (Cicada). 



This genus may be divided into two sections by the length 

 of the upper apical area to the tegmina, which is either longer 

 than eighth or about the same lengtli. Further generic 

 division may be necessary when more material can be 

 examined. 



Adenia, gen. nov. 



Head with the front very prominent, broadly conically 

 produced, very much shorter than vertex, which is sub- 

 quadrate and with its anterior and lateral margins straight, the 

 first completely at right angles with front ; ocelli slightly 

 farther apart from each other than from eyes and well separated 

 from base of head ; pronotum about as long as head, its 

 ])Osterior angles very widely ampliate ; mesonotum (including 



