174 HEMIPTERA-HETEROPTERA. 
ferorum obtuso vel obtusiusculo; segmento dorsali ultimo marium apice plerumque 
truncato ; segmento genitali marium rarissime foveato.” 
About sixteen extra-European genera are comprised in this division, four of which 
are found in Central America. 
| ONCOPELTUS. 
Oncopeltus, Stal, Hem. Fabr. i. p. 75 (1868) ; En. Hem. iv. pp. 98 & 101 (1874). 
This genus is at once recognized by the tumid scutellum with a central longitudinal 
carination. The only other allied genus showing this peculiarity, but with a central 
longitudinal sulcation, is from Tropical Africa. | 
The majority of the species are Neotropical, seven of which have been received from 
Central America ; the genus is also represented in all the other great zoological regions. 
Stal divided the genus into two subgenera Oncopeltus and Erythrischius, which are 
denoted but not followed here. | 
1. Oncopeltus gutta. (Tab. XVI. fig. 22.) 
Iygeus gutta, H.-S. Wanz. Ins. vii. p. 20, f. 703"; ib. ix. p. 200. 
O. (Oncopeltus) gutta, Stal, En. Hem. iv. p. 101. 47. 
Oncopeltus guttas, Uhler, Bull. U.S. Geol. & Geog. Surv. ii. p. 302. 13. 
Hab. Norra America, California °, Arizona *—Mzexico ! 2 3 (coll. Dist.), Cuernavaca 
(Bilimek, Mus. Vind. Ces.), Oaxaca (Mus. Berol.). 
This species is very protean in markings. Stal? enumerates three varieties ; but there 
are other and intermediate ones. The head is either totally black or spotted with red; 
the pronotum has generally a central longitudinal black line, but is sometimes without 
it; and the scutellum is either luteous, red, or black. A Mexican variety is figured. 
Stal has remarked that the second and third joints of the rostrum are of variable 
length. 
2. Oncopeltus sexmaculatus. (Tab. XVII. fig. 1.) 
O. (Oncopeltus) seamaculatus, Stal, En. Hem. iv. p. 102. 5+. 
Lygeus guita, Town. Glov. Ill. Ins. Ord. Hem. p. 45, t. vii. f. 15. 
Hab. Mexico!; British Honpuras, river Sarstoon (Llancaneaur); GUATEMALA, 
Capetillo, Teleman (Champion). : 
The specimen figured is from Guatemala. The form delineated by Townend Glover 
evidently applies to this species. | 
8. Oncopeltus varicolor. (Tab. XVI. fig. 21.) 
' Lygeus varicolor, Fabr. Ent. Syst. iv. p. 149. 49; Syst. Rhynch. p. 219. 65; Dall. List Hem. ii, 
p. 588. 16°; Mayr, Nov. Hem. p. 126% 
Lygeus alternans, H.-S. Wanz. Ins. vii. p. 20, f. 704°; Dall. List Hem. ii. p, 539. 18+. 
