240 HEMIPTERA-HETEROPTERA. 
no trace of the dark claval area; central dark patch either entirely obsolete or only faintly indicated, 
with its central transverse spot minute. 
Long. 9 millim. 
Hab. Panama, Volcan de Chiriqui 2000 to 8000 feet (Champion). 
b. Basal joint of antenne longer than head ; third joint almost as long as the second. 
3, Xenetus bracteatus, n.sp. (Tab. XXIV. fig. 4.) 
Head brownish ochraceous, the eyes fuscous. Antenna ochraceous, basal joint sparingly and minutely spotted 
with fuscous, second joint with the apex fuscous, apical joint (excluding base and apex) fuscous. Pro- 
notum ochraceous, the lateral margins fuscous, most broadly so at lateral angles. Scutellum ochraceous, 
the basal angles fuscous, the apical third brownish or castaneous. Corium reddish brown, finely and 
palely pilose, with a central, irregular, transverse ochraceous spot on lateral margins and a transverse 
linear dark spot at base of cuneus, which is ochraceous, with the apical half reddish, or altogether pale 
reddish. Legs ochraceous, pilose, sparingly and minutely spotted with fuscous, apices of posterior femora 
broadly reddish brown. Sternum more or less spotted with fuscous (carded specimen), Rostrum ochra- 
ceous, with the apex pitchy and reaching the posterior coxee. Cellular veins of the membrane reddish. 
Long. 83 millim. 
Hab. GuatemMaua, San Gerdnimo (Champion). 
_ 4, Xenetus chryselectrus, n. sp. 
Allied to the preceding species, but smaller, golden ochraceous above and unicolorous. Pronotum with the 
lateral margins narrowly and obscurely fuscous. Scutellum with the extreme apex black. Corium finely 
and thickly pubescent, with a transverse, minute, dark linear spot at base of cuneus, which is more or 
less concolorous with corium. Other characters as in X. bracteatus, but the apex of the second joint. of 
antenne more distinctly clavate, the pronotum less elongate, &c. 
Long. 7 millim. 
Hab. GUATEMALA, Pantaleon (Champion). 
ZACORUS, gen. nov. 
Allied to Herdonius, Stél, but differing from that genus in not having the antenne as long as the body, and 
the scutellum spined on disk and not at apex. Body elongate, and moderately pilose. Head large, sub- 
triangular, anteriorly obliquely deflexed, lateral margins channelled and subfoliaceous, eyes contiguous to 
the anterior margin of the pronotum, and with a narrow central longitudinal sulcation. Antennee with 
the basal joint not quite as long as the head and moderately robust; second joint considerably more than 
twice the length of the first, its apical half globosely incrassated but narrowing at apex; third and fourth 
joints slender, the third half as long again as the fourth. Pronotum deeply constricted and narrowed at 
centre; the anterior portion obliquely deflexed and narrowed from anterior margin to constriction, with 
its surface irregular; the posterior portion or lobe convexly globose and widening to the lateral angles ; 
the posterior margin concavely sinuate before the scutellum, the anterior margin subtruncate or very 
slightly emarginate. Scutellum obliquely depressed at the base, armed about the centre with a long sub- 
erect spine, from which there is a distinct central carination to the apex. Corium with the lateral margins 
concave. Cuneus longer than broad, its outer margin convex. Legs finely but prominently setose. 
Rostrum about reaching to the intermediate coxe. 
1. Zacorus staphyliniformis, n. sp. (Tab. XXIV. fig. 5.) 
Head and pronotum black, with the posterior margin of the last ochraceous. Antenne dull brownish; first 
joint with the basal portion black and its extreme base ochraceous, the third with the base ochraceous: 
Anterior lobe of pronotum with an obscure central longitudinal carination, on each side of which are two 
