102 HEMIPTERA-HETEROPTERA. 
B. constrictus, B. regularis, B. angustatus, &c., but differs from all of them in the short 
(but acute) antenniferous processes, as well as in other particulars. B. rugiventris is 
nearest allied to B. angustatus, and has the pronotum similarly formed, differing from 
it, however, in the much broader general shape, and in the produced apical angles of 
the sixth segment in the male. It is more parallel than the male of B. neotropicalis, 
and is more rugose beneath. 
14. Brachyrrhynchus mestus. 
Mezira mesta, Stal, Stett. ent. Zeit. 1862, p. 438 (?)1; Enum. Hemipt. iii. p. 147* (nec Walk.). 
Brachyrrhynchus mestus, Bergr. Proc. Ent. Soc. Wash. ii. p. 336 °. 
. Rather elongate, nigro-piceous, the legs and antenne inclining to ferruginous; the membrane fuscous, 
obscure luteous behind the apex of the corium; the upper surface granulate (the connexivum included) 
and clothed with a few very minute ochraceous hairs; the legs and antennew shortly pubescent. Head 
(exclusive of the apical process) transverse ; the apical process stout, reaching to beyond the middle of the 
first antennal joint, feebly notched at the tip ; the spiniform antenniferous processes long, acute, divergent ; 
the post-ocular portions dilated laterally into an acute spine, which extends outwards as far as the eyes ; 
antenne moderately long, rather slender, joint 2 shorter than 1, 3 considerably longer than 1, 4 about 
as long as 2, piriform. Pronotum feebly emarginate at the base and sides, the margins crenulate ; 
the anterior portion rounded and slightly dilated at the sides anteriorly, with indications of four faint 
ridges on the disc; the posterior portion much broader, rounded at the sides. Corium rounded at the 
apex. Connexivum rounded at the sides posteriorly, the sixth segment arcuate-emarginate at the 
apex, leaving the first genital segment broadly exposed, the latter with two broad rounded lobes. 
Beneath rugulose, dull; the venter rather convex, each segment with a smooth spot in the middle. 
Femora and tibie asperate. 
Length 8, breadth 24 millim. 
Hab. 1NortH America, California and Arizona?.—Mexico? 3 (coll. Signoret 1, in 
Mus. Vind. Ces.). 
The description is taken from the type in the Vienna Museum. A male from 
Omilteme (. H. Smith) and a female from San Miguelito (Dr. Palmer) may belong to 
the same species. The type is very like the female of B. neotropicalis, but is relatively 
narrower and has the pronotum very feebly sinuate at the sides. The Omilteme 
specimen is narrower than the maies of that insect. B. me@stus (Stal) must remain 
as a doubtful species until more ‘specimens are obtained. Mezira mesta, Walk., 
belongs to Neuroctenus. 
15. Brachyrrhynchus emarginatus. (Tab. VII. figg. 5, ¢ ; 5a, antenna.) 
Aradus emarginatus, Say, Descr. of New Species of Heteropt. Hemipt. of N. Am. (New Harmony, 
Dec. 1831) *; Complete Writings, i. p. 354”. 
Brachyrhynchus emarginatus, Uhler, Proc. Calif. Acad. Sci. (2) iv. p. 281°. 
Oblong-ovate, broad, piceous or piceo-ferruginous, the legs and antenna sometimes entirely ferruginous, the 
membrane blackish or fuscous, obscurely luteous round the margin of the corium; the upper surface 
granulate, the connexivum rugulose, and sparsely clothed with excessively short, curled, ochraceous 
hairs ; the legs and antenne indistinctly pubescent. Head (exclusive of the apical process) transverse, 
rounded behind ; the apical process convex, reaching to near the apex of the first antennal joint, shortly 
bilobed at the tip; the spiniform antenniferous processes stout, divergent; the post-ocular portions 
