i8o HOMOPTERA 



globules and usually with a long, curved, needle-like spine extending backward over the body ; meto- 

 pidium vertical, keeled, about as broad as high ; humeral angles strong, heavy, triangular, blunt; median 

 carina percurrent; scutellum entirely exposed, triangular, base swollen, tip acute. Tegmina long, 

 narrow, hyaline; veins heavy and usually colored: base narrowly coriaceous and punctate; apex diagon- 

 ally truncate; four or five apical and one or two discoidal cells; no apical limbus. Legs simple; all 

 tarsi about equal in length. 



Type globulare Fabricius. 



Geogpaphieal distribution : A strictly South American genus, most of the species being known 

 only from Brazil. 



1. bullifera Goding, Amer. Mus. Novit. 4 (igSo). Bolivia. 



2. germari Guerin, Ic. Reg. Anim. 365 (i838). Brazil. 



3. globulare Fabricius, Syst. Rhyng. 16. 3 (i8o3). — Pl. 9, fig. 141. Brazil. 



4. globulijerum Pallas, Spicil. Zool. IX : 22 (1772). Brazil. 



5. glomiferum Germar, Rev. Silb. III : 260. 2 (i835). Brazil. 



6. rufiglobum Fairmaire, Rev. Memb. 5o8. 3 (1846). Brazil. 



7. tintinnabtdiferum Lesson, 111. Zool. Pl. 55 (i83i). Brazil. 



164. GENUS STYLOCENTRUS STAL 



Stylocentrus Stal, Hem. Fabr II : 49 (1869). 



Charactera : A very distinctive genus, similar to the preceding in having long spine-like pro- 

 cesses on the pronotum but without the inflated globules. The insects are medium sized, and are deli- 

 cate and fragile in structure. Head subquadrate, about as broad as high, trilobed, very roughly sculp- 

 tured ; base arcuate and bearing a pair of strong triangular tubercles; eyes very large and globular; ocelli 

 large, prominent, twice as far from each other as from the eyes and situated above a line drawn through 

 centers of eyes; inferior margins of genae extended forward in broad flattened plates; clypeus long and 

 narrow, extending for two-thirds its length below the inferior margins of the genae. Pronotum convex, 

 bearing a slender erect spine which is three-branched, the lateralbranches extending outward and curving 

 backward, the middle spine very slender, sinuate, extending backward with the tip reaching the tips of 

 the tegmina; metopidium broader than high, modified to form the base of the erect spine which is deep. 

 ly notched in front at the base ; median carina not developed ; humeral angles extended into short, sharp 

 spines; scutellum entirely exposed, triangular, swoUen at base, impinging on tegmina, tip acuminate. 

 Tegmina semiopaque, coriaceous and punctate on basal two-thirds, hyaline on apical third, usually 

 brightly colored; veins strong but irregular; four apical cells; one discoidal cell; apex diagonally trun- 

 cate and with a narrow limbus on the anal margin. Legs simple, cylindrical, longand slender; hind 

 tarsi longest. 



Type ancora Perty. 



Geogpaphical distributlon ; The two species of the genus have a wide distribution over the 

 northern part of South America and parts of Central America. 



1. ancora Perty, Del. Anim. 179(1834). — P|, 9, fig. 142. Brazil, Colombia, Peru, Ven- 



ezuela. 



2. championi Fowler, B. C. A. II : 164. i (1896). Panama, Honduras, Costa 



Rica. 



