278 :Mr. W. L. Distant on TTomoptera. 



Truana, gen. nov. 



Head triangular, considerably shorter than the pronotum, 

 including eyes about half the width of base of mesonotuin j 

 front a little shorter than vertex, somewhat triangular, 

 centrally finely sulcate, lateral margins of front and vertex 

 almost continuous ; vertex with two central longitudinal 

 ridges, exhibiting a deep sulcation between them ; front 

 ocellus placed very near anterior margin, the other two on 

 each side of ridges, a little nearer to each other than to eyes, 

 lateral margins and eyes oblique ; pronotum narrowed ante- 

 riorly, lateral margins oblique, posterior angles a little 

 subangularlyampliate, centrally, finely, longitudinally sulcate; 

 mesonotum (including cruciform elevation) a little longer 

 than pronotum ; abdomen short, prominently, centrally, 

 dorsally ridged ; tympana entirely exposed ; opercula in 

 male small, short, not entirely covering the sonorous apertures ; 

 tegmina semiopaque, costal membrane somewhat broad and 

 concave, postcostal area broad and distinct, apical areas eight j 

 wings with six apical areas. 



Allied to Lacetas, Karsch, differing principally by the 

 number of apical veins to the tegmina. 



Type, /. sulcata, Dist. 



Iruana sulcata, sp. n. 



Somewhat uniformly pale ochraceous ; tegmina semiopaque, 

 with an ochraceous tint; wings semihyaline, with the venation 

 ochraceous; head and pronotum more or less centrally longi- 

 tudinally sulcate, the front finely, the vertex most strongly 

 sulcate; rostrum reaching the intermediate coxte; other 

 characters as in generic diagnosis. 



Long., excl. tegm., ^ ? 15-lG mm,; exp. tcgm. 48- 

 50 mm. 



Hub. Brit. E. Africa : Lagari (C. S. Betton, Brit. Mus.). 



Genus Pkasia. 



Prasia, StPil, Tr. Eat. Soc. Lond. (3) i. p. 574 (1863). 

 Drepaiwpsaltria, Biedd. Hem. Celebes, p. 113 (1902). 



Type, P. faticina, Stal. 



I am unable to follow our Prussian colleague in separating 

 his genus Drepanopsaltria from Prasia. (1) He relies on 

 the presence or absence of the opercula, and gives a figure 

 representing a species of Prasia without stating what that 

 species is. Now the type of Prasia — P.faticina, Stal — is in 

 the British Museum, and is a female specimen, consequently 



