i88 HOMOPTERA 



closely impinging on scutellum and tegmina; scutellum narrowly exposed on each side. Tegmina 

 translucent: base narrowly coriaceous and punctate; veins strong; five apical and three discoidal cells; 

 tip rounded; apical limbus well developed. Legs simple; hind tarsi longest. 



Type acuticorms Stal. 



Qeogpaphieal distribution : This genus seems to be Hmited to Mexico and soulhwestern 



United States. 



1. acuticornis Stal, Bid. Memb. Kan. 291. i (1869). — Pl. I 0, fig, 16 1. Mexico, Arizona, Cahfornia. 



dtnticornis Buckton, Mon. Memb. 269 (igoS). 



2. brevicornis Van Duzee, Proc. Calif. Acad. Sci. XII : 11. 171 (1923). Lower California, San Marcos 



Island. 



3. obtusicornis Stal, Bid. Memb. Kan. 291. 2 (1869). Mexico. 



4. ramosicornis Plummer, Journ. N. Y. Ent. Soc. XLIII : 4. 3^3 (igSS). Mexico. 



5. taurinus Ball, Proc. Biol. Soc. Wash. XXXI : 29 (1918). California. 



176. genus orthobelus stal 



Orthobeius Stil, Hem. Fabr. II : 48 (1869). 



Characters : Closely related to the preceding genus but dififering particularly in having a long, 

 straight posterior process which usually extends farther backward than the abdomen. Head subquad- 

 rate, wider than high; base weakly arcuate; eyes globular; ocelli very large. prominent, equidistant 

 from each other and from the eyes and situated slightly above a line drawn through centers of eyes; 

 inferior margins of genae sloping downward, sinuate ; clypeus extending for half its length below the infer- 

 ior margins of the genae, tip gradually acute. Pronotum convex with strong suprahumeral horns ; 

 metopidium sloping, about as wide ashigh; mediancarina percurrent; humeral angles strongand trian- 

 gular ; suprahumeral horns strong, varying greatly in length, size and structure, often dilated at the tips, 

 usually longer than the distance between their baseS and extending outward and upward; posterior pro- 

 cess long, usually straight, tectiform, impinging on scutellum and tegmina, tip sharp and reaching as far 

 or farther than the end of the abdomen, always farther than the internal angles of the tegmina; scutellum 

 plainly visible on each side. Tegmina hyaline; base narrowly coriaceous and punctate; veins strong; 

 five apical and two or three discoidal cells; tippointed; apical limbus well developed. Legs simple; 

 hind tarsi longest. 



Type urtis Fairmaire. 



Geographicai distributlon : Orihobelus seems to be distinctly limited to fhe West Indies. 

 The species are very abundant on these islands but have never been found in any other region. 



1. gomez-menori Pelaez, Bol. Soc. Espan. XXXVI : 279 (1936). San Domingo. 



2. havanensis Fairmaire, Rev. Memb. 5i6. 22(1846). — Pl. 10 fig. Cuba. 



162. 



3. poeyi Fairmaire, Rev. Memb. 5x8. 29 (1846). Cuba, Haiti. 



4. urus Fairmaire, Rev. Memb. 5x6. 23 (1846). San Domingo, Haiti, St Vin- 



megaceros Walker, List Hom. B. M. 6i5. 45 {i85i). cenfs Island. 



labatus Buckton, Mon. Merab. 239 (igo3). 



5. ivolcotti Goding, Journ. N. Y. Ent. Soc. XXXVI : 37 (1928). Haiti. 



