34 HEMIPTERA-HOMOPTERA. 
longer and broader, with the dorsal horn shorter, less porrect, and blunter at the apex, 
and the humeral horns are much less porrect and recurved, so that, if viewed from the 
side, they do not project beyond the metopidium. 
It is possible that this species, with 7. veruta, T. turrita, and T. obscura, ought to 
be placed in a separate genus; in facies they differ very much from the ordinary testa- 
ceous forms of Triquetra. 
UMBONIA. 
Umbonia, Burmeister, Handb. Ent. ii. 1, p. 188 (1835); Fairmaire, Ann. Soc. Ent. Fr. sér. 2, iv. 
p. 274; Stal, Ofv. Vet.-Ak. Forh. xxvi. p. 264 (1869). 
About seven or eight species are comprised in this genus; they appear to be con- 
fined to Central and Tropical South America; one species, U. amazili, is recorded by 
Fairmaire from North America, but I have not seen a specimen of this insect, and Stal 
omits it from his list of the genus. The species are distinguished by having the pro- 
notum armed with a longer or shorter dorsal horn, and by the shoulders being more or 
less acutely produced and cornute. The wings have four apical cells, and their anal 
areas are minute and not lobate; the posterior process of the pronotum is continued 
almost, if not quite, to the apex of the tegmina, and sometimes projects beyond them. 
The genus is allied to Triquetra, but the species are, as a rule, stouter insects and less 
tectiform, with the humeral processes much less developed. ‘The two species described 
by Amyot and Serville (Hist. Nat. des Ins. Hémipt. p. 543) as belonging to their genus 
Physoplia (P. crassicornis and P. nigrata) are really forms of the male of Umbonia 
orozimbo. 
The species of Umbonia, like those of Triquetra and Lanthe, frequent thorny plants, 
so that the horn-like processes are distinctly protective appendages. 
1. Umbonia reclinata. (Tab. III. figg. 12, 12 a.) 
Hoplophora reclinata, Germ. Rev. Ent. Silb. iii. p. 243°. 
Umbonia reclinata, Fairm. Ann. Soc. Ent. Fr. sér. 2, iv. p. 276’. 
Umbonia funesta, Stal, Ofv. Vet.-Ak. Forh. xi. p. 249 (1854) *. 
Umbonia multiformis, Walk. List of Homopt. Ins., Suppl. p. 129°. 
Hab. Mexico)? (Mus. Brit.; Sallé*), Chilpancingo in Guerrero 4600 feet (H. ZH. 
Smith), Jalapa (Hoge), Orizaba (H. H. Smith; F. D.G.); Guatemara (Sallé), Lanquin 
and San Gerénimo in Vera Paz (Champion); Costa Rica (Van Patten).—Braziu. 
This species is somewhat variable in colour, but may usually be known by its 
prevailing red tint, as well as by the short humeral prominences and short strongly 
recurved dorsal horn, which is situated at a considerable distance behind the shoulders. 
The locality for U. funesta, Stal, is given® as “Central America.” <A. specimen of 
U. reclinata from Jalapa is figured. 
