■26 ORIENTAL CICADIDM. 



Toscna is one of the most conspicuous genera of the Cicadidce, and its species are all 

 included in this fauna. The north-eastern districts of Continental India are its head-quarters, 

 for here are focussed some of the largest and handsomest of its species ; it is also well 

 represented in Burma, and from thence its distribution is extended throughout the Malay 

 Peninsula to the south, and apparently northward as far as some portions of China. In the 

 Malayan Archipelago it is not uncommon in Sumatra, Java, and Borneo, and as I have seen 

 representatives from Amboyna, it probably exists in other intervening islands, of which, 

 however, we have at present no precise information. 



As in Taciia, albinic variation is not unfrequent. 



a. Tcgmina uniformly black ; wings reddish ochraceous. 



1. Tosena mearesiana.* (Tab. II., fig. 3, a, b.) 



Cicada Mearesiana, Westwood, Arc. Ent. vol. i. p. 98, n. xv. t. 25, f. 1 (1842). 



Tosena Mearesiana, Amy. & Serv. Hist, des Hem. p. 463 (1843) ; Atkins. J. A. S. Beng. vol. liii. p. 217, n. 19 

 (1885) ; ibid. Iv. p. 151, n. 17 (1886). 



Body aud legs black or dark fuscous ; ocelli and eyes pale castaneous ; posterior margin of pro- 

 notum, posterior margin of mesonotum (excluding cruciform elevation), posterior lateral margins of 

 metanotum, a small spot on each side of face, and a large spot on posterior lateral margins of prosternum, 

 ochraceous. 



Tegmina black, opaque. Wings reddish-ochraceous ; the venation, posterior margin, and anal area 

 dark fuscous. 



The rostrum extends to between the inner angles of the opercula, which are short, broad, and well 

 separated. 



Long. excl. tegm. S , 53 to 58 millim. ; 2 , 40 to 43 millim. Exp. tegm. ^ , 132 to 142 millim. ; 

 ? 130 to 133 millim. 



Hab. — Continental India: Himalaya {sic. — Westw.) ; Sikkim (Calc. Mus. — coll. Dist.). 



According to present knowledge, this species appears to be confined to the neighbourhood 

 of Sikkim. The females are much smaller than the males, and have their tegmina rather 

 paler in hue. 



b. Tegmina hlack or dark fuscous, crossed by an oblique whitish fascia. 



c. Wings more or less black. 



2. Tosena fasciata. (Tab. II., figs. 1 & 2, a, h.) 



Tettigoniafasciata, Fabricius, Mant. Lis. ii. p. 265, n. 2 (1787) ; Ent. Syst. iv. p. 17, n. 2 (1794) ; Syst. Ehyng. 



p. 34, n. 3 (1803). 

 Cicada fasciata, Oliv. Enc. Meth. v. p. 747, n. 2, t. 109, f. 1 (1790) ; Germ, in Thou. Arcli. ii. p. 2, u. 11 (1830) ; 



Snb. Rev. Ent. ii. p. 75, n. 49 (1834) ; Blanch. Hist. Nat. Ins. iii. p. 165, n. 2 (1840). 

 Tosena fasciata. Amy. & Serv. Hist, des Hem. p. 462, n. 1 (1843). 

 Stoll, Cig. fig. 16. 



Head and thorax above black ; an oblique spot near each anterior lateral angle of vertex of head, 

 ocelli, eyes, two small spots on anterior margin of pronotum, posterior margin of pronotum, posterior 

 margin of mesonotum, a spot on each side of cruciform elevation, and the posterior margins of metanotum, 

 ochraceous. Abdomen ochraceous, the basal segment, tympanal coverings, and a central discal spot on 

 the second and third segments, black. Head beneath, rostrum, sternum, legs, opercula, and basal segment 



"■■ Named after Mr. Meares, by whom it was first sent borne. 



