FAM. CICADIDyE 17 



68. Genus PACARINA, Distant 



Pacarina. Distant, Ann. Mag. Nat. Hist. (7), Vol. i5, p. 314 (igo5). 



Characters. — Head (including eyes) broader than base of mesonotum ; eyes projecting beyond 

 anterior angles of pronotum : vertex at area of ocelli much longer than front ; pronotum with the poste- 

 rior angles moderately lobately produced, its lateral margins oblique, slightly sinuate, its length shorter 

 than that of mesonotum ; abdomen about as long as space between apex of head and base of cruciform 

 elevation; tympanal coverings distinct but inwardly concavely narrowed and exposing the tympanal 

 cavities; face convex, a little broader than the space between it and eyes; opercula about reaching base 

 of abdomen, their lateral margins oblique, their posterior margins a little rounded; anterior femora 

 armed with two strong spines beneath; rostrum about reaching the posterior coxa?; tegmina and wings 

 hyaline; apical areas eight. 



Type. — P. signifera, Walker. 



Geographical distribution of species. — Central America, Mexico and Texas. 



1. P. signifera. — PI. 2, Fig. 17a, b. Central America, Texas. 



Cicada sigjiifera, Walker, List Horn. Suppl. p. 22 (i85S). 



Proarna signifera. Distant, Biol.Centr.-Amer., Rhynch. Horn. Vol. 1, p. i3, 



t. 2. f. 2I<!, b (l88l). 



Pacarina signifera. Distant, loc. cit. p. 142 (igo5). 



2. P. schumanni. Mexico. 



Pacarina schumanni. Distant, loc. cit. p. 142 (igo5). 



69. Genus TYMPANOTERPES, Stal 



Tympanoterpes. Stal (part.), Ann. Soc. Ent. Fr. (4), Vol 1, p. 614 (1861); Hem. Afr. Vol. 4, p. 7 

 (1866); Distant, Ann. Mag. Nat. Hist. (7), Vol. i5, p. 3i2 (igo5). 



Characters. — Head (including eyes) about equal in width to base of mesonotum, eyes scar- 

 cely projecting beyond anterior angles of pronotum, vertex of head at area of ocelli often only very 

 slightly longer than front; pronotum shorter than mesonotum, the posterior angles a little prominent but 

 not lobately produced ; abdomen about as long as space between apex of head and base of cruciform 

 elevation: metasternum with a moderately elevated transverse central plate, which is not anteriorly 

 angularly produced; tegmina usually less than about three times as long as broad, the transverse vein 

 at base of second apical area strongly oblique; wings about half the length of tegmina which have eight 

 apical areas and the basal cell longer than broad. 



Type. — T. serricosta. Germar 1). 



Geographical distribution of species. — Tropical America. 



1. T. serricosta. Brazd, Argentina. 



Cicada serricosta. Germar. in Silb. Rev. Enl. Vol. 2, p. 62 (1834). 

 Tympanoterpes serricosta, Stal, Ann. Soc. Ent. Fr. (4), Vol. 1, p. 6i5 (iS6i). 

 Fidicina pusilla, Berg, Hem. Argent, p. 209 (1879). 



2. T . arechavaleta. Argentina. Uruguay. 



Tympanoterpes Arechavalettz, Berg, Hem. Argent. Addend, p. 194(1884); 

 Walerhouse, Aid Ident. Ins. t. 168, f. 3a,b. 



1) Of the species Stal originally stated were representative of his genus Tynfianoterpes, he subsequently (in tS64) removed a no small propor- 

 tion to his genus Proarna. The Cica.ia serricsta, Germar, must be taken as the type. 



