FAM. MEMBRACID.E 117 



12. panda Ball, Proc. Biol. Soc. Wash. 45. 80 (1932). Arizona. 



i3. pubescens Emmons, N. Y. Agr. Rept. V : iSy (1854). Canada. United States. ' 

 flavigullula Goding, Can. Ent. XXV : 172 (1893). 



14. salamandra Fairmaire, Rev. Memb. 493. i (1846). — Pl, 6, fig. 7 I . Canada, United States. 



i5. stouei Ball, Proc. Biol. Soc. Wash. 45. 79 (igSs). Florida 



16. tricinda Ball, Proc. Biol. Soc. Wash. 45. 78 (1932). Arizona. 



84. GENUS POLYRHYSSA STAL 



Polyrhyssa Stal, Hem. Fabr. II : 26 (1869). 



Characters : Polyrhyssa belongs to a group of genera which seems to center around the genus 

 Hille Stal, characterized by strongly ridged sides of pronotum and the presence of a compressed frontal 

 horn. It is particularly distinguished from the other nearly related genera by the two discoidal cells of 

 the corium and the somewhat compressed, arcuate dorsum. Head triangular; base sinuate; eyes nearly 

 globular; ocelh prominent. about equidistant from each other and from the eyes and situated about on a 

 line drawn through centers of eyes; inferior margins of geniE shghtly curved ; clypeus projecting for 

 half its length below inferior margins of genae and continuing the line made by these margins. Prono- 

 tum shghtly elevated and somewhat compressed, with a short, compressed frontal horn ; sides of prono- 

 tum strongly ridged with heavy longitudinal carinig; metopidium straight, broader than high ; humeral 

 angles heavy, blunt, triangular; median carina strongly percurrent; dorsum regularly arcuate; posterior 

 apex of pronotum gradually acuminate and just reaching the tips of the tegmina. Tegmina about half 

 covered by the overhanging sides of the pronotum ; venation inchned to be irregular but usually showing 

 five apical and two discoidal cells ; median apical cell triangular and petiolate; apical hmbus narrow. 

 Legs simpie; hind tarsi a httle longer than the others. 



Type cuUrata Fabricius. 



Geographical distributlon : Kuown only from the tj^pe species vvhich was described nierely 

 as from « South America » but ofwhich we have specimens froin Colombia and Argentina. 

 i. cultrata Fabricius, Coq. 111. Ins. II : 77 (1801). — Pl. 6, fig. 72. Colombia, Argentina. 



85. Genus METHEISA Fowler 



Methelsa Fowler, B. C. A. II : i32 (1895). 



Characters : We are suspicious of the validity of this genus because of the fact that according 

 to Fowler's description and according to the characters shown by the type species, if we have correctly 

 identified this species, the genus would seem to differ from Polyrhyssa onl}' in the matter of the more 

 convex and sinuate dorsum and a slight difference (which may or may not be constant) in the position of 

 the ocelli, structures which in our opinion do not represent satisfactory generic characters. Fowler 

 regards this genus as standing between Entylia and Publilia on the one hand and Hille and Lucilla (novv 

 Dioclophara) on the other, but tliis is true of course also of Pulyrhyssa. A study of M. lucilodes suggests 

 the foUowing generic characters : Head triangular, roughly sculptured; base strongly sinuate; eyes 

 globular ; ocelli large, prominent, fartherfrom each other than from the eyes and situated 011 a line dravvn 



