i86 HOMOPTERA 



i3. subspinosus Fairmaire, Rev. Memb. Sig. 3i (1846). Mexico,Honduras,CostaRica, 



Panama. 



14. vHreipennis Fowler, B. C. A. II : i5o. 5 (1896). Guatemala. 



172. GENUS OPHICENTRUS FOWLER 



Ophicentpus Fowler, B. C. A. II : i56 (1896). 



Characters : Small delicate insects with no suprahumeral horns and with a slender, extremely 

 sinuate posteiior process. Head subquadrate, broader than high; base weakly arcuate; eyes ovate ; 

 ocelh large, farther from each other than from the eyes and situated about on a line drawn through cen- 

 ters of eyes ; inferior margins of genae rounded ; clypeus projecting for half its length below inferior mar- 

 gins of genae, tip rounded. Pronotum convex, without suprahumerals, and smooth on each side of the 

 median carina; pronotum sloping, about as broad as high; median carina percurrent; humeral angles 

 large and rounded; posterior process long, slender, triquerate, extremely sinuate, elevated above scutel- 

 lum, tip sharp and reaching well beyond the internal angles of the tegmina; scutellum entirely exposed. 

 Tegmina subcoriaceous with very heavy veins; five apical and two discoidal cells, theexteriordiscoidal 

 cell nearly circular and almost touching the costal margin of the corium ; apical limbus broad. Legs 

 simple; hind tarsi longest. 



Type notandus Fowler. 



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

 I. notandus Fowler, B. C. A. II : i56. i (1896). — Pl. I O.fig. 149. Panama. 



173. GENUS PSILOCENTRUS FOWLER 



Psilocentrus Fowler, B. C. A. II : i56 (1896). 



Characters : This is another of Fowler's mdnotypic genera, the representative speciesof which 

 we have not seen. It must be close to Ophicentrus but differs in the wing venation, the less sinuate poster- 

 ior process and in having the pronotum strongly tricarinate. From Fowler's description and figures, 

 the generic characters may be indicated as foUows : Head subquadrate, wider than high; base strongly 

 arcuate; eyes globular ; ocelli prominent, equidistant from each other and from the eyes and situated 

 above a line drawn through centers of eyes; inferior margins of genae sloping and rounded; clypeus pro- 

 jecting for half its length below inferior margins of gense. Pronotum convex with astrong, heavy ridge 

 on each side of the median carina ; metopidium sloping, about as broad as high ; median carina strongly 

 percurrent; humeral angles large and blunt; posterior process slender, lightly sinuate, arisingfrom the 

 upper part of the pronotum high above the scutellum and extending just about to the internal angles of 

 thetegmina; scutellum entirely exposed. Tegmina hyaline ; base narrowly coriaceous and punctate ; 

 five apical and two discoidal cells, the base of the exterior discoidal cell sessile and truncate; apicallim- 

 bus broad. Hind wings with four apical cells. Legs simple; hind tarsi longest. 



Type xaniipa Fowler. 



Geographical distribution : The type species from Mexico is the only known representative 

 of the genus. 



I. xantipa Fowler, B. C. A. II : i5j. i (1896). Mexico. 



