82 



ORIENTAL CICADIDM. 



This genus, according to present knowledge, appears to be quite confined to the 

 PhiHppine Islands. My collection is poor from that habitat, and although I have a fair 

 number of Cicadidfe from the neighbouring islands, I am without a representative oiPsithyristria, 

 neither have I met with a single example in the other collections I have been enabled to 

 examine. Stal has described five species, all discovered by Carl Semper during his sojourn 

 in the Philippine Islands.* 



a. Anpido hasali arcce ulnaris quartce siihohtuso ,- area apicali octava angusta, hasi ipsa paullo ampliata. 



1. Psithyristria specularis. 



Psitlnjristria sprciihins, Stal, Ofv. Vet.-Ak. Forh. 1870, 

 p. 712, n. 1, Tab. VIII., fig. 16. 



" Pallide olivaceo-virescens, parce griseo pilosa ; 

 fascia verticis ocellos includente, antice bisinuata, 

 macula apicali jugorum, marginibus arearum thoracis, 

 maculis duabus magnis obtriangularibus a basi ultra 

 medium estensis maculisque duabus mimitis pone 

 medium disci scutelli, maculis in series duas medias 

 positis, lateribus apiceque dorsi abdominis, macula 

 apicali alteraque anguli basilis anterioris areolae 

 basalis, macula anastomoses cirgeute maculaque 

 apicem ramorum ulnarium tegminum includente 

 fuscis ; venis tegminum alarumque olivaceo-virescentibus ; lateribus fuscis dorsi abdominis maculis 

 pallidis notatis." 



" 3 . Long. 23, lat. 8J, exp. tegm. 77 mill." 



Hab. — Malayan Archipelago: Philippine Isles (Semper — Stoekh. Mus.). 



" Magnitudine majore structuraque tegminum a sequentibus divergens." 



Fig. 3. Psitliyristria specularis. 



" aa. Angido hasali area ulnaris quartce acuta ; area apicali octava minus angusta, a basi apicem versus 

 sensim ampliata." 

 '• b. Venis arcam ulnarcm tertiam apice terminantibus ina-assatis vel medio nodosis, lineam rectam 

 formantihus, area rcnam unicam emittente." 



2. Psithyristria crassinervis. 



Psithyristria crassinervis, Stal, Ofv. "Vet.-Ak. Forh. 1870, p. 713, u. 2, Tab. VIII., 

 fig. 17. 

 " Pallide olivaceo-virescens, superne fusco-picta ; tegminibus alisque vitreis, 

 '^ venis olivaceis, hie illic virescentibus, anastomosibus maculisque subapicalibus 

 fuscis; anastomosi prima recurrente, angulo hasali exteriore ares apicalia 

 Fig. i. Tegminum of Psithyristria secuudffi igitur ohtuso, angulo basali interiore acuto ; venis aream ulnarem 



tertiam postice terminantibus incrassatis ; arese ulnari octava basi quam 

 apice fere dimidio angustiore; areola hasali lata." 

 " 3 . Long. 22, esp. tegm. 61 mill." 

 Hab. — Malayan Archipelago: Philippine Isles (Semper — Stoekh. Mus.). 



'- Several genera of teiTestrial mollnsca ax'e also peculiar to the Philippines, as Chlorcea, Helicarion, and Bhysota. 

 See Semper, ' Natural Conditons of Existence, as they affect Animal Life,' pp. 284 — 5. 



