FAM. MEMBRACID.E 201 



Geographieal distribution : The genus is lepresented by two Afiican species. 



1. grahami Distant, Rhynch. Notes 328 (1916). — Pl. I 0, fig. 166. Ashanti, Obuasi, Gold Coast. 



2. mabirensis China, Ann. Mag. Nat. Hist. XI : 463 (1923). Aburi, Uganda, Mabira. 



192. Genus BARSUMAS Distant 



Barsumas Distant, Rhynch. Notes i56 (1916). 



Characters : Small, inconspicuous insects closely related to those of the genus Platybdus Stal, 

 but differing particularly in the structure of the posterior process which is broadly, laterally flattened 

 and impinges on the tegmina for its distal two-thirds. Head subquadrate, broader than high, apical 

 half deflexed; base arcuate and sinuate; eyes globular; ocelli small, inconspicuous, elevated, equidistant 

 from each other and from the eyes and situated about on a hne drawn through centers of eyes; inferior 

 margins of gente sinuate ; clypeus extending for more than half its length below inferior margins of genas. 

 Pronotum convex, with short, broad, flattened suprahumerals; metopidium sloping, broader than high, 

 extended forward in a ridge over the head; median carina percurrent; humeral angles large, triangular 

 and sharp; suprahumeral horns short, flattened, blunt, extending outward and slightly upward, not as 

 long as the distance between their bases; posterior process heavy, laminate, arising from well above 

 the scutellum, arching above the scutellum, then curved downard and impinging on the tegmina for its 

 sinuate two-thirds, incUned to be serrate above, tip sharp and extending beyond the lateral angles of the 

 tegmina; scutellum entirely exposed, subtriangular, longer than broad, tip notched and upcurved. 

 Tegmina broad, hyahne, wrinkled; base coriaceous and punctate; veins prominent; tip pointed; five 

 apical and three discoidal cells; apical Umbus broad, particularly on the anal margin. Hind wings with 

 three apical cells. Legs simple; hind tarsi longest. 



Typ» primus Distant. 



Geographical distribution : This is an African genus known only from the type species. 



I. primus Distant, Rhynch. Notes i56 (1916). — Pl. I I , fig. I 67. Mashonaland, Sahsbury, Bel- 



gian Congo. 



193. GENUS MONOCENTRUS MELICHAR 



Monocentrus Melichar, Wien. Ent. Zeit. XXIV : 297 (igoS). 

 Congallana Distant, Ins. Trans. I : 2i3 (1908). 

 Basilidea Distant, Rynch. Notes 149 (1916). 



Characters : A very distinct genus characterized particularly by the long suprahumerals which 

 are closely contiguous or actually joined at their bases. Head subquadrate, broader than high; base 

 highly arcuate and strongly sinuate; eyes globular; ocelli large, prominent. equidistant from each other 

 and from the eyes and situated above a line drawn through centers of eyes; inferior margins of genae 

 sinuate; clypeus extending for half its lengtli below inferior margins of genas, tip pointed. Pronotum 

 elevated, conical, bearing suprahumeral horns which either touch each other or are grown together at 

 their bases ; metopidium conical, higher than wide ; median carina percurrent; humeral angles strong, 

 triangular and blunt; suprahumeral horns varying in size and structure but always close together or 

 united at their bases and usualiy laminate and extending outward at the tips; posterior process heavy, 

 sinuate, arising from high above the scutellum, sharply angulate near the base, sometimes with a tooth 



