LEPTOBYRSA. 20 
LEPTOBYRSA. 
Leptobyrsa, Stal, Enum. Hemipt. iii. pp. 119, 123 (1878). 
Stal referred a single species, LZ. steini. from Rio Janeiro, to this genus. His 
definition requires modification to include the five others now added, the form of the 
discoidal and subcostal (costal of Stal) areas varying according to the species, and 
the pronotal hood being sometimes obsolete. The genus chiefly differs from its allies 
in having the elytra at least twice as long as the abdomen, broad, more or less widely 
reticulated, and strongly rounded at the shoulders, as well as at the apex; the antenne 
slender, with long basal joint; the rostral groove uninterrupted, broad on the meso- 
and metasternum and closed in front; the rostrum rather short; the head with, 
at most, three rather short frontal spines; the posterior portion of the pronotum 
abbreviated, and obtuse at the tip; the wings short or obsolete. 
The five Central-American species may be thus differentiated :— 
Pronotum with the membranous margins slightly rounded, and not constricted 
behind. 
Elytra very broad, sinuate at the base in front; discoidal area strongly 
tumid, the subcostal area very narrow, the costal area with six rows 
of areole ; pronotum and elytra pilose; pronotal hood small, transverse. Jatipennis, n. sp. 
Elytra narrower, rounded at the base in front; discoidal area angularly 
raised, the subcostal area broader, the costal area with five rows of 
areole; pronotum and elytra not pubescent; pronotal hood larger . translucida, n. sp. 
Pronotum with the membranous margins broadly dilated anteriorly and 
constricted behind ; discoidal area of the elytra flat or only slightly raised. 
Elytra sinuate at the base in front; pronotum tricarinate, the hood small. plicata, n. sp. 
Elytra rounded at the base in front ; pronotal hood obsolete. 
Pronotum tricarinate . . . . . ee eee ee ww ee Chiriquensis, n. sp. 
Pronotum unicarinate . . . . 1. 1. we eee ee ee gr iCEpS, D. Sp. 
1. Leptobyrsa latipennis, n. sp. (Tab. II. figg. 13; 13a, profile.) 
Very broad, testaceous, the margins of the pronotum and the elytra pale testaceo-hyaline; the pronotum with 
the lateral margins and the carine, and the elytra with the entire margin and the nervures, closely set 
with long fine hairs; the antenne and legs also thickly pilose, the hairs on the antenne very long and 
projecting. Head with a rather long frontal spine and two shorter spines below it; antenne long 
and moderately slender, joints 1 and 4 subequal in length, 1 about three and a half times as long as 2, 
2 very short, 3 nearly twice as long as 1. Pronotum with the membranous margins moderately wide, 
projecting in front to beyond the eyes, recurved and slightly rounded, with small rounded areole—four 
rows in front, diminishing to two behind; hood small, transverse; the three carine feebly raised, 
the outer ones abbreviated behind and curving outwards, the interspaces dull and punctured; the 
triangular posterior portion abbreviated and rounded behind. |Elytra very broad and somewhat 
ear-shaped, broadly rounded at the tip, and deeply sinuate in front; discoidal area large, strongly tumid ; 
subcostal area very narrow, biseriate ; sutural and costal areas somewhat widely, subequally reticulated, 
the costal area transversely creased and with about six rows of areole from the base to the middle. 
Length 5, breadth of the pronotum 14, of the elytra 4,4, millim. 
Hab. Panama, Bugaba (Champion). 
BIOL. CENTR.-AMER., Rhynch., Vol. I1., December 1897. 4 
