104 HEMIPTERA-HETEROPTERA. 
post-ocular spines and more acute antenniferous processes. The femora and tibie are 
stout and asperate. The antenne are stout and rough, with the apical joint less 
clavate than in most of the allied forms. 
17. Brachyrrhynchus yucatanus, n. sp. (Tab. VII. fig. 8, ?.) 
@. Oblong-ovate, rather narrow, fusco-ferruginous ; the membrane fuscous, obscure luteous round the apex 
of the corium ; the upper surface finely granulate, the connexivum rugulose, and clothed with a few 
scattered, minute, extremely short, ochraceous hairs. Head broader than long, rounded behind; the 
apical process stout, reaching to beyond the middle of the first antennal joint, feebly emarginate at the 
tip; the spiniform antenniferous processes acute, divergent; the post-ocular portions rather broad, 
dilated laterally into a short, stout spine, which extends to about as far as the eyes; antenne stout, 
with stouter basal joint, joints 1-3 granulate, 3 considerably longer than 1, 2 and 4 equal, 4 oblong- 
ovate. Pronotum feebly emarginate at the base, rather deeply sinuate at the sides, the margins crenulate : 
. the anterior portion rounded and slightly dilated at the sides, with four short ridges in front; the posterior 
portion wider and flattened. Scutellum with a faint median ridge. Corium reaching the middle of the 
second segment, with the apical margin slightly rounded. Connexivum broad, rounded at the sides 
posteriorly, the sixth segment rather deeply emarginate at the apex, leaving the first genital segment 
broadly exposed, the latter with two broad rounded lobes. Beneath rugulose; the venter flattened, 
each segment with a smooth oblong spot. Femora rather coarsely granulate. 
Length 43, breadth 2 millim. 
Hab. Mexico, Temax in North Yucatan (Gauwmer). 
One example. Very like B. granulatus (Say), from Texas, Florida, &c. *, three 
specimens of which are before me, but with stouter and more cylindrical antenne, the 
pronotum more deeply sinuate at the sides, the general shape more ovate. The less 
constricted, flatter pronotum, the more acute antenniferous processes, and the more 
slender legs separate it from B. divisus. 
18. Brachyrrhynchus nanus, n. sp. (Tab. VII. fig. 9, 2.) 
?. Oblong, rather narrow, fusco-ferruginous; the membrane nigro-fuscous, luteous round the apex of the 
corium ; the upper surface finely granulate, the connexivum rugulose, and with a few extremely short, 
minute, ochraceous hairs (only visible under a high magnifying-power). Head transverse, rounded 
behind ; the apical process stout, reaching almost to the apex of the first antennal joint, emarginate at 
the tip; the spiniform antenniferous processes short, stout, slightly divergent ; the post-ocular portions 
rather broad, dilated laterally into a stout tooth, which extends outwards as far as the eyes; antenne 
short, moderately stout, with a stouter basal joint, joints 1-3 granulate, 3 longer than 1, 4 slightly 
longer than 2, oblong-ovate. Pronotum flattened, feebly emarginate at the base, slightly sinuate at the 
sides, the margins crenulate, the anterior portion with indications of four short ridges in front. Scutellum 
with a faint median ridge. Corium reaching to the middle of the second segment, rounded at the apex. 
Connexivum rounded at the sides posteriorly, the sixth segment moderately emarginate at the apex, 
leaving the first genital segment somewhat broadly exposed, the latter with two prominent rounded lobes. 
Beneath rugulose; the venter flattened, with a small smooth oblong spot on each segment. Spiracles 
very prominent, approaching very near the margin posteriorly. 
Length 4, breadth 13 millim. 
Hab. Guatemata, San Isidro (Champion). 
One example. This is the smallest Central-American species of the genus. It is 
nearest allied to B. yucatanus, differing from that insect in the less thickened antenne, 
* B. granulatus is recorded by Dr. Bergroth from Mexico (Proc. Ent. Soc. Wash. ii. p. 336), possibly in 
error, 
