246 



HOMOPTERA 



truncate; posteriov process heavy, tectiform, almost entirely concealing scutellum. impinging on 

 tegmina, tip sharp and not reaching tips of tegmina; scutellum very narrowly exposed on each side. 

 Tegmina long, narrow, subhyaline; basal and costal areas coriaceous and punctate; veins heavy but not 

 prominent; five apical and two discoidal cells; tip rounded; apical limbus broad and much wrinkled. 

 [^egs simple; femora cylindrical; tibias triquerate and finely spined; hind tarsi longest. 



Type tumesceus Buckton. 



Geographical distribution : This is strictly an Austrahan genus. 



1. albovitta Kirkaldy, Hon. Exp. Sta. Buil. Ent. HI : qo (1907). 



2. leda Kirkaldy, Hon. Exp. Sta. Bull. Ent. HI : 89 (1907). 



3. rubridorsatnm Buckton, Mon. Memb. 23o (1903). 



4. succisus Buckton, Mon. Memb. 226 (igo^). 



5. tasmania Fairmaire, Rev. Memb. 5i3. 14 (1846). 



contractus Walker, List Hom. B. M. 622. 56 (i85i). 

 truiicaticoniis Watker, Ins. Saand. 81 (i858). 



6. tumesceus Buckton, Mon. Memb. 228 (i^oS). 



7. vitta Walker, List Hom. B. M. 626. 64 (i85i). — Pl. I 3, fig. 2 I 



contorta Walker. Ins. Saund. 66 (iS58). 



4. 



Queensland, Bundaberg. 



New South Wales, Mittagong. 



Austraha, Adelaide. 



South Austraha. 



Tasmania, Australia, Van 

 Dieman's Land, Port PhiHp, 

 New Holland, Hobart, Gis- 

 borne, Victoria, Brisbane, 

 Oueensland, New South 

 Wales. 



Tasmania. 



Austraha, Tasmania, Camden 

 Haven, Penrith, Sydney, 

 New South Wales, Quean- 

 beyan, Bungendore, South 

 Australia. 



244. GENUS EMPHUSIS BUCKTON 



Emphusis Buckton, Mon. Memb. 256 (1903). 



Characters : This is a genus of large insects which are very conspicuous because of the greatl)" 

 swollen and crescentiform metopidium. The suprahumerals are usually strong and horizontal, the 

 posterior process heavy and straight and the tegmina more or less vitreous. Head subquadrate, about 

 twice as broad as high : base arcuate and weakly sinuate; eyes large and ovate ; ocelli large, conspicuous, 

 farther from each other than from the eyes and situated slightly above a line drawn through centers of 

 eyes; inferior margins of gena; slightly sloping and sinuate; clypeus broad, trilobed, extending for two- 

 thirds its length below inferior margins of genae, tip pointed. Pronotum strongly gibbous, swollen, 

 crescentiform in front and bearing a pair of robust suprahumerals and a heavy posterior process; 

 metopidium strongl}' convex, swollen, protruding, about as broad as high ; median carina usually 

 obsolete; humeral angles small, weak and acute; suprahumeral horns varying in size and structure but 

 usually horizontal, flattened dorso-ventrally, as long or longer than the distance between their bases, tips 

 sharp and sometimes recurved; posterior process heavy, tectiform, almost entirelj' concealing the 

 scutellum, impinging on tegmina, generally straight, tip sharp and not reaching the tips of the tegmina; 

 scutellum ver}- narrowly exposed on each side. Tegmina broad, subhyaline, vitreous or semiopaque; 

 basal and costal areas coriaceous and punctate; veins strong; five apical and two discoidal cells; tip 

 rounded; apical limbus broad. Legs simple and heavy ; hind tarsi much the longest. 



