A ustralian Gicadidae. 89 



Division Thopharia, Distant. 



Genus Thopha, Aniyot and Serville. 



Type T. saccata, Fabricius. 



Thopa saccata, Fabr. 



Tettigonia saccata, Fabr. Syst. Rhyn., p. 34, 9, 1803. 

 Cicada saccata, Guer. Mag. Zool., p. 80, pi. ccxxxviii., 1838. 

 Thopa saccata, Am. and Serv. Hist. Hem., p. 471, 1843; 



Frog. Aust. Ins., p. 348, fig. 154. 

 Specimens in all museum collections. Hab. — New South 

 "Wales. 



Thopha sessiliba, Distant. 



Thopha scssiliba, Dist. Ann. Mag. Nat. Hist., (6), ix., p. 

 314 (1892); id. Gen. Ins. fasc, 142, p. 21, pi. 3, fig. 17, 

 a, b, c, 1912. 

 Thopha stentor, Buckton. " Home University Magazine,?' 



Haslemere, i., p. 371, 1898. 

 Specimens in Macleay, Melbourne and Adelaide Museums, and 

 "in Coll. H.A. Hab. — Central Australia, Northern Territory 

 >{ ?), Queensland. 



Thopha colorata, Distant. 



Thopha colorata, Dist. Ann. Mag. Nat. Hist. (1907), xx., 



p. 411. 

 One specimen in Coll. H.A., two (mutilated) in Adelaide 

 Museum. Hab. — North- Western Australia. 



T. nigricans, Distant. 



Thopha nigricans, Dist. Ann. Soc. Ent. Belg., 1910, p. 415. 



Head pronotum, mesonotum, sternum, and legs piceous or 

 l)lack, abdomen, tympanal covers and opercula testaceous, teg- 

 mina and wings hyaline, talc-like, venation dark ochraceous, 

 l>asal cell brownish-ochraceous, with a small hyaline spot at its 

 lower extremity, and with its upper margins black. Base of 

 head between eyes about as broad as medial length of vertex. 

 Eyes strongly pedunculate, considerably passing anterior pro- 

 notal angles, anterior margins of vertex before front distinctly 

 ridged, and diverging ridges between ocelli. Pronotum with 

 four central carinations on anterior area, posterior margin 

 ^strongly transversely striate, lateral margins of pronotum and 



