46 HEMIPTERA-HETEROPTERA. 
antenne black; the legs rufo-testaceous, with the tarsi black. Head dull, rugulose, the antenniferous 
tubercles short and pointed; antenne extending to very little beyond the base of the elytra, moderately 
slender, joint 1 much longer than 2, 3 barely twice the length of 4, 4 a little longer than 1 and 2 united. 
Pronotum distinctly tricarinate, closely punctured; the membranous margins narrow, straight, and 
converging forwards, rounded behind, with a row of small areole. LElytra long, narrow, very feebly 
widening to about the basal third; discoidal area extending to beyond the middle; subcostal and costal 
areas biseriate. Mesosternal laminew converging at the middle, the rostral groove very narrow at 
this part. . 
Length 23, breadth 1 millim. (¢ 9.) 
Hab. Mexico, Orizaba (Bilimek, in Mus. Vind. Ces.); GuateMaua, Cerro Zunil, 
Panajachel, Zapote, Capetillo, Guatemala city, Aceituno (Champion). 
Numerous examples from Guatemala, four only from Mexico. A specimen from 
Cerro Zunil is figured. 
ACYSTA, n. gen. 
Rostrum extending to the meso-metasternal suture. Rostral groove uninterrupted, closed in front, gradually 
widening behind the anterior coxw, the intercoxal portion of the metasternum transverse. Antennee 
slender, the two basal joints included, the basal joint about twice as long as the second. Head short, with 
two short converging spines in front and a decumbent spine on either side. Pronotum without hood, 
tricarinate, with narrow, thin, membranous margins, sometimes obliterated at the middle, the triangular 
posterior portion acute at the tip. Elytra at least one and a half times the length of the abdomen, oval, 
rounded at the tip; subcostal and discoidal areas closely reticulated, about equal in width, the latter 
short and surrounded by raised nervures, the outer (median) nervure prominent to near the tip; 
costal area broad, hyaline, with three or four rows of areole. Orifice distinct. Wings short. Legs 
slender. 
The two small species from which these characters are taken cannot be satisfactorily 
included in any of the genera tabulated by Stal. A third species, represented by a_ 
single mutilated specimen (without head) from Chacoj in Vera Paz, perhaps belongs 
here ; it differs from the others in having the marginal carine of the pronotum still 
narrower and the costal area biseriate. 
1. Acysta integra, n.sp. (Tab. III. fig. 22.) 
Moderately long, ferruginous, the head and the body beneath black ; the pronotum with the margins and about 
half the triangular posterior portion pale testaceous, the areole of the margins hyaline ; the elytra with a 
broad transverse fascia on the costal area before the middle, another near the apex, and the apical half 
of the discoidal area, more or less fuscous, the rest of the costal area pale testaceous and hyaline, the 
basal half of the discoidal area also pale, the nervures of the sutural area brownish; the spines on the 
head and the antenne flavo-testaceous; the legs testaceous. Antenne moderately long, joint 3 twice as 
long as 4. Pronotum short, broad behind, constricted in front; closely punctured and tricarinate, the 
outer carins almost obsolete on the disc; the membranous margins entire, rather narrow, rounded behind, 
with asingle row of areolz in front, increasing to two rows behind. Elytra oval ; discoidal area extending 
to a little beyond the basal third ; costal area rather closely reticulated, with about four rows of areole ; 
sutural area more widely reticulated towards the apex. 
Length 23, breadth 13 millim. 
Hab. Guatema.a, Cerro Zunil 4000 feet (Champion). 
One specimen. 
