CICADIDAE. 



57 



Mesonotum twice the length of pronotum ; basal three- quarters domed and 

 swollen ; cruciform elevation relatively depressed, little developed, much con- 

 stricted laterally. Abdomen small, conical, four-thirds length of mesonotum, 

 than which it is almost "wholly narrower, giving whole head and trunk a general 

 fusiform shape. Tymbal covers complete, consisting of a somewhat narrow 

 tongue reaching antero-laterally from each side of 2nd segment. Legs long 

 and slender. Meracanthus long and slender, and hollowed ventrally. 



Tegmina unusually expansive, much longer than body, with wings also, 

 cross-ribbed at wide intervals, especially in the huge cell Cui. Stem of M 

 extraordinarily thin and weak, leaving basal cell practically contiguous with 



Text-fig. 1. — Moana expansa g. et sp. u., tegmen. A. J. E. Terzi del. 



that of Cui. Cui very stout, rib-like and compressed almost at right angles to 

 the plane of the tegmen, strongly arched towards costal margin. A2 very 

 stout, practically contiguous with anal margin, which is itself much thickened, 

 and bent outwards, so that clavus is wider than usual. Nodal line barely 

 discernible on membrane. Hind wings normal, with six apical cells. Pygophor 

 with no median dorsal spine, but two lateral projections directed caudad, as in 

 Sawda, Fatima, Cosmopsaltria and related genera, but shorter. (Rest of the 

 pygophor missing in the case of the type.) Curiously enough in the last nymph 

 of same sex the pygophor bears a typical median dorsal spine. 



The position of this genus, partly on account of the poor condition of the 

 unique type, is obscure. The venation, however, shows it to be an extraordinarily 

 aberrant form, which, with some hesitation, I place nearer to Saivda Dist. than 

 to any other known genus. The tymbal covers closely resemble those of Sawda, 

 though the opercula are much shorter than is usual in that genus. The narrow 



