28 HOMOPTERA 



9. R. mixta. < eylon. 



Dnndubia mixta, Kirby, Tourn. Linn. Soc. Zool. Vol 24. p. 138(1891); Dist. 

 Faun. Brit. hid. Rhynch. Vol. 3, p. ;q, f. 40 (1906). 



C. Opercula not extending beyond base of abdomen. 



10. R. atra. Philippine Islands. 



Rihana atra. Distant, Entomologist 119091. p. 207. 



11. R. seminiger. Nilgiri Hills. 



Rihana stminigtr, Distant, Entomologist (1909), p. 20S. 



12. R. umbrosa. Borneo. 



Cicada umbrosa, Distant. Ann. Mag. Nat. Hist. (7), Vol. 14, p. 33o (19O4 . 

 i3. R. numida. China. 



Rihana numida. Distant. Ann. Mag. Nat. Hist. (X), Vol. 8. p. i32 (1911). 



D. Opercula almost reaching base of apical abdominal segment. 



14. R. operculissima. Lombok. 



Cicada operculissima. Distant, Ann. Mag. Nat. Hist. (6), Vol. 20, p. 369 (1897). 



Species known to writer by the female sex only 



15. R. scmperi. Philippines. 



Cicada [Chremistiea) scmperi, Stal, Oefv. Vet.-Akad. Forh. (1870), p. 7i5- 



16. R. tondana. Tondono. 



Fulicina tondana, Walker, Journ. Linn. Soc. Lond. Zool. Vol. 10, p. 92 (1867). 

 Cryptotympnna tondana. Distant. Mon. Orient. Cicad. p. 93, t. i3, f. i3i7./< 

 (1891). 



Species ^Ethiopicanas 



Tegmina more or less spotted. 



17. R. nigrans. Madagascar. 



Cicada nigrans. Distant, Trans. Ent. Soc. Lond. (1904), p. 673, t. 3o,f. la.b. 



18. R. martini. Madagascar. 



Rihana martini, Distant, Trans. Ent. Soc. Lond. (1905), p. 198. 



19. R. hova. Madagascar. 



Rihana hova. Distant, Trans. Ent. Soc. Lond. (igo5l, p. 19S. 



Species Americana? 



A. Tegmina unspotted or with the transverse veins at bases of second and third apical areas 

 infuscated. 



20. R. bicosta. Mexico, Costa Rica. 



Cicada bicosta, Walker, List Horn. Vol. 1, p. 112 (i85o) ; Dist. Biol. Centr.- 

 Amer. Rhynch. Horn. Vol. 1, p. 7, t 3. f. i.?,4 (18S1). 



21. R. bulgara. Mexico. 



Rihana operculissima, Distant, Ann. Mag. Nat. Hi>t. (7), Vol. 17, p. i56 



(1906), nom. praeocc. 

 Rihana bulgara, Distant, n. nom. Cat. Rhynch, Fam. Cicad,, p. 35(1906) 



22. R. biconica. — PI. 4, Figs. 24a, b, c. Cuba. 



Cicada biconica. Walker, List Horn. Vol. 1, p. 120 ( i85o) ; Stal, Oefv. Vet.- 

 Akad. Forh. (1862), p. 484. 



23. R. digueti. Lower California. 



Rihana Digueti, Distant. Ann. Mag. Nat. Hist. (7). Vol. 17, p. i56 (1906). 



24. R. bonhotei. Bahamas. 



Cicada Bonhotei, Distant, Ent. Month. Mag. (2), Vol. 12, p. 71 (1901). 



25. R. bermitdiana. Bermudas. 



Cicada Bermitdiana, Verrill, Trans. Connect. Acad. Vol. 11, p. 736, t. 96, 

 f. 1-2 (1902). 



