206 ^Ir. W. L. Distant on Homoptera. 



lont^itudinal streaks ; tegmina with tlieir apices narrowed 

 Lut broadly truncate; pronotuni with a distinct foveate spot 

 on each side of the central carination ; mesonotura distinctly 

 tricarinate, a foveate spot inside each lateral carination ; 

 posterior tibiae with three spines ; face with an arcuated 

 macular line near each lateral margin ; clypeus obliquely 

 transversely darkly striate on each lateral area. 



Long., excl. tegin., 6 mm.; exp, tegm. IS mm. 



JIah. Sierra L"one ; Sherboro Island (.S'l/nio/i, Brit. Mns.). 



The specific cljaracteristic of this species is the broad 

 truncate apices to the tegmina. 



Clenus Platybrachys. 

 Platybrachys, StSl, Eugenies Resa, p. 280 (1860). 

 Type, P. decemmacuJa, Walk. [Euryhrachjs). 



PlatyhrachyH harhatn. 



Cicada barbata, Fabr. Svst. Ent. p. 684. 11 (1775"). 

 Ewyhrachys rubigmea, Walk. List Horn. ii. p. 386 (ISol). 



Genus Olonia. 

 Ohnia, Stal, Ofv. Vet.-Ak. Forh. 1862, p. 488. 

 Type, 0. riilncunda, Walk. [Earyhrachys). 



Olonia maryinata, sp. n. 



Head, pronotum, mesonotum^ face, rostrum, and legs black ; 

 abdomen and sternum sanguineous; lateral areas of sternum 

 and lateral and apical segmental margins of abdomen beneath 

 black ; apical area of abdomen cretaceously tomento?e ; 

 tegmina castaneous, with scattered small paler spots, the 

 costal and apical margins broadly and the claval margin 

 narrowly black; wings piceous, the venation black; head 

 (including eyes) reaching the anterior lateral angles of tlie 

 pronotum ; face broad, tinely granulose, its lateral angle 

 broadly obtusely prominent ; clypeus smooth, not carinate ; 

 vertex of head almost as long as pronotum ; mesonotum 

 distinctly tricarinate. 



Long., excl. tegm., mm. ; exp. tegm. 18 mm. 



Hah. Queensland {F. P. DodJ, Brit. Mus.). 



Yaerana, gen. nov. 



Head (including eyes) as wide as pronotum ; vertex trans- 

 verse, slightly excavate, the margins distinctly ridged, eyes 



