isrs.j 77 



exhibiting varied opaline lustre, which in some lights is found to be varied witli 

 close and regular series of transverse darker strife. Tegraina at base narrovcly dark 

 fuscous. Costal area fuscous for rather more than half its length, nervures and 

 nervules bright luteous, and, for two-thirds the length of tegmina, bordered on each 

 side with fuscous. The apical border is also fuscous, very broadly so at apex, and 

 narrowing towards inner margin, containing a sub-marginal row of pale luteous spots, 

 which are the outer terminations of an equal number of narrow, transverse, linear, 

 pale luteous stria?. Claval area pale greenish. Wings pale greenish for nearly two- 

 thirds their area from base, remaining portion shining fuscous, enclosing a sub- 

 marginal row of pale opaline spots, of which the largest is sub-costal and irregular 

 in shape, being somewhat sub-quadrate, hollowed out externally, and produced at 

 base towards outer edge. Nervures and nervules pale luteous, in some places tinged 

 with green. 



? . Differs principally from the S in having all the colour markings intensified, 

 the tegminal row of sub-marginal spots, which are luteous in the S > being pale 

 opaline in the $ . The abdomen is more thickly clothed with pilosity, and the ros- 

 trum is somewhat shorter in length than in the (J . 



(? . Long. 45 mill. Exp. tegm. 124 mill. $ . Long. 44 mill. Long., with ovi- 

 positor exscrted, 49 mill. Exp. tegm. 127 mill. 



Naga Hills : alt. 2000 to 6000 ft. Khasia Hills : alt. 1500 to 

 6000 ft. (Chiunell). 



This beautiful species is interesting as showing the alliance of 

 the genera Tosena and Gceana, which, originally placed near each other 

 by Amyot and Serville, were by Mr. Walker separated far apart, both 

 in the Brit. Mus. Catalogue, and in the Brit. Mus. Coll. The late and 

 lamented Prof. Stal, in his Synopsis of the Genera of the Stridulantia 

 (Hem. Af., vol. iv), recognised their aiSnity, and I think, had he lived 

 to have seen this species, would have agreed that there is a regular 

 transition through the genera Tosena, Gceana, and Suechys. Tosena 

 splendida differs apparently from the other species of the genus by its 

 paler coloration and more transparent appearance, but the last peculi- 

 arity is shadowed in T. r/Zifl^fl', Dist., whilst the pronotal and mesonotal 

 spots, which ally it to some species of the genus Gceana, may be seen 

 indicated on the pronotum of T. melanoptera. White, in which the two 

 discal spots are faintly recognisable, whilst the broad, pronotal, luteous 

 band of that species appears only as the two angular spots in T. splen- 

 dida. I have abstained from describing the ueuration of the tegmina, 

 knowing that character in many instances among the Cicadidce to be 

 most unreliable, and, in addition to the evidence I have already col- 

 lected, I may state, that the neuration of the right and left tegmina iu 

 the typical ^ specimen above described is asymmetrical. 



1, Selston Villas, East Duhvich, S.E. : 

 August, 1878. 



