i36 HOMOPTERA 



B. Doysum with swolhn rounded elevatioKS 



1. Median apical cell stylate Lallemandia Funkhouser. 



2. Median apical cell truitcate Bajulata Ball. 



II. Corium with two discoidal cells; ihird apical cell elongate 



A. Pronotum convex, not laterally compressed 



1. Dorsum highest in froiit; tegmina almost enlirely covered by pronotum Hygris St&l. 



2. Dorsum straight; tegmina one-half exposed Idioderma Van Duzee. 



B. Pronotum elevated and laterally compressed Erosne Stal. 



107. genus AMASTRIS Stal 



Amastris Stal, Kio Jan. Hem. II : 3o (1862). 



Characters : Small to medium sized insectswith high, arcuate, laterally compressed pionotum ; 

 tegmina about half covered by the pronotum, and corium with the median apical cell distinctly trans- 

 verse. All of the described species of this genus are greenish in color, fading to yellowish or brownish 

 in cabinet specimens. Head triangular, smooth; base sinuate; eyes large, globular, protruding; ocelli 

 large, conspicuous, equidistant from each other and from the eyes and situated on a line drawn through 

 centers of eyes; inferior margins of genae weakly sinuate; clypeus extending for half its length below 

 inferior margins of genae and carrying out the triangular outline of the face made by the sides of the 

 genae. Pronotum elevated, flattened laterally, smooth, highest in front; no suprahumeral horns; humer- 

 al angles broadly rounded ; metopidium straight, keeled, much higher than broad; median carina 

 strongly percurrent; sides of pronotum without rugae or lateral impressions; doisum gradually rounded 

 from top of crest to posterior apex of pronotum which is heavy, tectiform, acute and extends just about 

 to the tips of the tegmina. Tegmina usually hyaline, not more than half exposed; five apical and three 

 discoidal cells ; median apical cell transverse with base triangular and stylate; apical limbus moderate. 

 Legssimple; hind tarsi longest. 



Type compacta Walker. 



Geographical distribution : Widely distributed over South and Central Americaand Mexico 

 and two species from southern United States. 



1. antica Germar, Mag. Ent. IV ; 16 (1821). BraziL 



2. brunneipennis Funkhouser, Journ. N. Y. Ent. Soc XXX : 1.31(1922). Brazil. 



3. compacta Walker, List Hom. B. M. Suppl. 140 (i858). Brazil. 



fallax Stal, Rio Jan Hem. 11 : 3o. : (1862). 



4. consanguina Stal, Rio Jan. Memb. II : 36. 3 (1862). Brazil. 



5. elevala Funkhouser, Journ. N. Y. Ent. Soc. XXX : i. 27 (1922). Brazil, Peru, British Guiana. 



6. fiavifolia Stoll, CigaL 61 (1780). Surinam. 



7. funkhouseri Haviland, Zoologica VI : 3. 25i (igaS). British Guiana. 



8. lycioda Ball, Proc. Biol. Soc. Wash. 46. 27 (igSS). Arizona. 



9. macidata Funkhouser, Journ. N. Y. Ent. Soc. XXX : i. 3i (1922). BraziL 



10. minuta Funkhouser, Journ. N. Y. Ent. Soc. XXX : i. 3o (1922). Peru. 



11. obtegens Fabricius, Syst. Rhyng. 11. 25 (i8o3). — Pl. 7, fig. 93. Mexico, Panama, Colombia. 



cilrina Fairmaire, Rev. Memb. 3og. 10 (1846). 



