FAM. MEMBRACID.1E i83 



bb. Coritim with three discoidal cells 



c. Posterior process much shorter ihan abdomen Brachycentrutus Metcalf 



cc. Posterior process as long as or longer than the abdomen [and Bruner. 



d. Clavus entirely exposed Monobelus Stal. 



dd. Clavtis partly covered by the prouotum Quadrinaria Goding. 



aa. Scutellum entirely concealed Marshallella Goding. 



167. GENUS goniolomus stAl 



Goniolomus Stal, Bid. Memb. Kan. 294 (1869). 



Chapacters : A very distinct genus if it may be judged by the type species which is the only 

 species described for the genus and which is characterized by the three conspicuous spines, one on 

 each shoulder and one in the middle of the dorsum. Head subquadrate, broader than high, with a 

 horizontal ridge, deflexed below the ridge; base sinuate, lowest in the middle; eyes large and globular; 

 ocelli very large, prominent, twice as far from each other as from the eyes and situated near the upper 

 margin of the head, well above a hne drawn through centers of eyes; inferior margins of genas 

 rounded; clypeus extending for two-thirds its length below inferior margins of gense. Pronotum 

 convex and bearing three strong spines, two humeral and one dorsal; metopidium sloping, broader 

 than high, central anterior margin extending shghtly forward over the head; median carina percurrent; 

 humeral angles weak and rounded; suprahumeral spines long, sharp, triquerate, extending upward 

 and outward, as long as the distance between their bases; dorsal spine long, slender, erect, thornlike; 

 posterior process long, slender, decurved, extending almost to thetips of the tegmina; scutellum hardly 

 visible on each side. Tegmina long, narrow, semiopaque or translucent; base narrowly coriaceous 

 and punctate; five apical and three or four discoidal cells; apex rounded; apical limbus well developed 

 on dorsal margin. Legs simple; hind tarsi longest. 



Type tricorniger Stal. 



Geographical distribution : Known only from the type species from Cuba. 

 I. tricorniger Stal. Bid. Memb. Kan. 294. i (1869). — Pl. I 0, fig. I 45. Cuba. 



168. genus BOOCERUS STAL 



Boocerus Stal, Bid. Memb. Kan. 290 (1869). 



Characters ; A monotypic genus, the type species of which bears a strong superficial resem- 

 blance to the forms of Campylocentrus in having the inferior lobe on the posterior process, but is entirely 

 different in wing venation. Head subquadrate, broader than Iiigh; base weakly arcuate ; eyes 

 globular; ocelli conspicuous, farther from each other than from the eyes and situated well above a line 

 drawn through centers of eyes; inferior margins of genas rounded; clypeus extending for half its length 

 below inferior margins of gence. Pronotum convex, bearing suprahumeral horns and a strong posterior 

 process originating high above the scutellum ; metopidium vertical, broader than high; median carina 

 strongly percurrent; humeral angles strong, triangular, acute; suprahumeral horns long, strong, sharp, 

 extending outward and upward, twice as long as the distance between their bases; posterior process 

 strong, sinuate, arising high on the posterior dorsum, lobed on the inferior margin, apex sharp and 

 extending beyond the internal angles of thetegmina; scutellum entirely exposed, triangular, tip deeply 



