138 ORIENTAL CICADIDM. 



Genus TEEPNOSIA. 



Tcrpnosia, Distant, Ann. & Mag. Nat. Hist. ser. 6, vol. ix. p. 325 (1892). 



Body moderately long and robust. Head, including eyes, almost equal in width to base of mesonotum ; 

 ocelli wider apart from the eyes than from each other ; front broad and convexly rounded. Pronotum 

 widening posteriorly ; the lateral margins moderately ampliated, their posterior angles lobately rounded. 

 Anterior femora robustly and distinctly spined. Tympanal coverings rudimentary, the tympana practically 

 exposed and uncovered. Opercula short and transverse. Tegmina and wings hyaline. Tegmina with the 

 basal cell longer than broad ; apical areas eight in number; interior ulnar area not wider at apex than at 

 base. Wings with six apical areas. 



This genus differs from Calcagninns by the non-tuberculatecl abdomen, and has a great 

 resemblance to the genus Pomponia in the subfam. Cicadime, from which, of course, it is 

 distinguished by the uncovered tympana. 



Terpnosia is widely distributed, being (according to present knowledge) found in Ceylon, 

 Continental India, Tenasserim, the Malayan Archipelago, and Japan. 



a. Tegmina more or less spotted. 

 1. Terpnosia nigricosta. (Tab. XV., figs. 4, a, b.) 



Cicada nif/ricosta, Motschulsky, Bull. Soc. Nat. Mosc. xxsix. p. 184 (1866). 



^ . Head ochraceous ; marginal striations to front and the whole of vertex — excluding two small 

 spots near eyes and two basal spots — black. Pronotum blackish ; the lateral and posterior margins, a 

 central longitudinal fascia, and some discal macular markings, ochraceous ; extreme edges of posterior and 

 lateral margins, with three marginal spots near each lateral angle and a central basal marginal spot, black. 

 Mesonotum ochraceous, with a large central fused spot, an irregular fascia on each lateral area, and a large 

 spot in front of the basal cruciform elevation, black. Abdomen pale castaneous, with greyish tomentose 

 lateral markings ; the base,— narrowly, — the apical segment and anal appendage, and a lateral series of 

 segmental spots, blackish. Body beneath ochraceous ; a central fascia and transverse striations to face, 

 sternal spots, opercula, femora, anterior tibise, — excluding under surface and apex,— base and a broad central 

 anuulation to the intermediate tibife, base of posterior tibiae, base and apex of anterior and intermediate 

 tarsi, and the margins of the apical segment, black or blackish. 



Tegmina and wings pale hyaline, the venation mostly fuscous ; tegmina with the costal membrane 

 ochraceous, its outer edge black ; the transverse veins at the bases of the second, third, fifth, seventh and 

 eighth apical areas infuscated ; a series of small marginal spots on the longitudinal veins to apical areas, a 

 spot on venation at base of upper ulnar area and the same at apex and anterior margin of basal cell, and 

 a claval streak, black. 



The rostrum reaches the posterior coxae ; the face is very obscurely sulcated and somewhat strongly 

 transversely striate. 



Long. excl. tegm. <? , 30 to 31 millim. ; 2 , 23 to 26 millim. Exp. tegm. <? , 77 to 80 millim. ; 

 S , 72 to 88 millim. 



Hab. — Japan: Nikko, Chiuzenji (Lewis — coll. List.). 



Mr. Geo. Lewis procured a nice series of this species during his entomological journey in 

 Japan, with which he has kindly enriched my collection. 



