104 ORIENTAL CICADWM. 



Genus G^ANA. 



Gteana, Amyot & Serville, Hist, de Hem. p. 463, n. 362 (1843) ; Stal, Hem. Afr., iv. p. 4 (1866) ; Atkins. 

 J. A. S. Bang. vol. Iv. p. 156 (1886). 



Body long and moderately slender in the males, much shorter in the females. Head broad, including 

 eyes, about equal in width to that of mesonotum at base ; ocelli about twice the distance from eyes as from 

 each other ; face somewhat globosely convex, slightly prominent above. Pronotum with the lateral margins 

 neither distinctly ampliated nor toothed. Anterior femora distinctly spined. Tympana considerably 

 exposed, the tympanal covering incomplete and rudimentary. Tegmina opaque, their outer margins 

 convexly rounded ; apical areas, eight ; interior ulnar area a little wider at apex than at base ; wings 

 opaque. 



Gceana has considerable resemblance to the genus Toscna, but, apart from the exposed 

 tympana which locates it in the Tibiceniufe, it also differs from Toscna by the non-ampliated 

 and non-spined lateral margins to the pronotum, the more slender body, and the convexly 

 rounded outer margins of the tegmina. 



Like Tosena, this genus has also all its species included in our fauna, and although, 

 according to present knowledge, they are focussed in Continental India and Burma, others 

 doubtless remain to be discovered in the Malayan Archipelago. 



Gceana is a very variable genus, as the descriptions of the following species will show. 



1. Gseana maculata. (Tab. III., figs. 17, a, h.) 



Cicada maculata, Drury, Ins. ii. p. 69, t. 37, f. 1 (1773); Oliv. Enc. Meth. vol. v. p. 750, n. 20, t. 112, f. 4 



(1790); Germ. Then. Archiv. ii. 2, p. 12 (1830); Silb. Eev. Ent. ii. p. 74, n. 48 (1834); Blanch. 



Hist. Nat. Ins. iii. p. 165, n. 5, Hem. t. 10, f. 3 (1840). 

 Tettigonia maculata, Fabr. Syst. Ent. App. p. 831 (1775) ; Sp. Ins. ii. p. 319, n. 8 (1781) ; Maut. Ins. ii. p. 260, 



n. 12 (1787) ; Ent. Syst. iv. p. 20, n. 12 (1794) ; Syst. Ebyng. p. 37, n. 18 (1803). 

 Gteana maculata, Amy. et Serv, Hist des Hem. p. 464, n. 1 (1843) ; Walk. List Hom. i. p. 253, n. 1 (1850) ; 



Atkins. .1. A. S. Beng. vol. hii. p. 222, u. 37 (1885). 



Body above black ; head with a spot between ocelli and eyes, mesonotum with four discal spots, and a 

 spot on lateral margins, a spot on each side of basal cruciform elevation, and the apical segmental margin 

 of the abdomen, ochraceous. Body beneath and legs black ; a spot on each side of face, two small spots 

 on each side of mesosternum, and a small spot near posterior coxje, ochraceous. 



Tegmina and wings blackish ; tegmina greyish brown towards apex, with five ochraceous spots 

 arranged transversely, two near base and three about centre ; wings with a broad transverse subbasal 

 patch, followed by two contiguous spots near costal margin, ochraceous ; and a series of submarginal 

 greyish brown spots in the apical areas. 



The rostrum reaches the posterior coxae ; the opercula are small, and situate widely apart. 



Long. excl. tegm. <? 35, ? 33 millim. Exp. tegm. <? and 2 , 90 to 102 millim. 



Hab. — Continental India : Sikkim ; Naga Hills, Khasi Hills, Samagooting, and Dhausiri Valley 

 (Calc. Mus.). China (Bruss. Mus. ; Fenton — coll. Dist.). 



Var. a. 



Differs from the typical form by having the ochraceous markings to the tegmina and wings 

 replaced by pale greenish, the upper basal spot of tegmina absent, the lower spot replaced by two smaller 

 ones ; both tegmina and wings with a submarginal series of small whitish spots, and a small one of the 

 same colour in each of the two upper ulnar areas. 



Hab.— Continental India: Assam; Naga Hills (Chennell — coll. Dist.). 



