382 Mr. W. L. Distant on Homoptera. 



Orellana hrevis, sp. n. 



Head, pronotnm, and mesonotum olivaceous green ; liead 

 ■\vitli the area of tlie ocelli, or sometimes completely, shaded 

 with dull castaneous ; pronotura with a central fascia and 

 the incisures black ; mesonotum with two central obconical 

 spots^ on each side of which is a small spot on anterior 

 margin, and a large oblique fasciate spot on each side of 

 posterior disk, black ; abdomen above brownish ochraceous ; 

 segmental margins, tympanal coverings, and lateral areas of 

 inetanotum bright emerald-green ; body beneath and legs 

 pale green ; face and apices of tibife and tarsi more or less 

 dull castaneous ; abdomen beneath with the stigmata wliitishly 

 tomentose; tegmina and wings hyaline, venation fuscous, 

 brownish at base ; tegmina with the interior of the basal 

 cell green, costal membrane, a spot at end of radial area, a 

 spot on transverse vein at base of second apical area, and 

 sometimes a spot in upper ulnar area fuscous brown. Head 

 (including eyes) about two thirds the width of mesonotum at 

 base ; lateral margins of pronotum strongly ampliate and 

 medially obtusely angulate ; lateral tympanal coverings 

 about as broad as the internally exposed orifices ; abdomen 

 very short, not longer than space between anterior margin of 

 pronotum and base of cruciform elevation; rostrum reaching 

 posterior cox£e. 



Long., excl. tegm., c^ 24-26 mm. ; exp. tegni. 84-92 mm. 



IJab. Colombia (Brit. Mus.). 



Division Hamzaeia. 



This division, at present including only a single Eastern 

 genus, has much affinity with the Neotropical division 

 Zammararia. The pronotal margins are ampliated ; the 

 tympanal coverings only concealing about half of the tympanal 

 orifices; the tegmina and wings almost wholly opaque. 



Although the condition of the tympanal orifices allies this 

 division to the Zammararia, with which the dilated pronotal 

 margins also agree, the genus Ilamza, on which it is founded, 

 could, apart from the tympanal characters, be easily confused 

 with the genus Platypltura belonging to the subfamily 

 Cicadinse. 



Genus Hamza. 

 Hamza, Dist. Trans. Ent. Soc. Lond. 1904, p. 674. 

 Type, //. bouruensts, Dist. {Plaiyphura) . 



