6 HEMIPTERA-HETEROPTERA. 
strongly sinuous; reticulation very wide. Wings not extending beyond the abdomen. Legs slender, 
the knees distinctly swollen on the upperside. Orifice prominent, surrounded by a transverse raised 
carina. 
The single species included in this genus may be readily distinguished from Dicysta 
and the allied forms by the articulation of the third and fourth joints of the antenne. 
The pronotal hood is enormously large, long, and swollen. 
1. Megalocysta pellucida, n.sp. (Tab. I. figg. 5; 5a, profile; 56, antenna; 
5c, part of the body beneath.) 
Moderately elongate, rather broad; body ferruginous, the disc of the pronotum sometimes blackish, the 
integument pale testaceo-hyaline and glabrous, the nervures of the pronotal hood more or less fuscous, the 
elytra usually with a faint curved fuscous fascia towards the apex, and sometimes the apical row of 
areole also slightly infuscate; the legs and antenne ferruginous or testaceous, the apical joint of the 
latter black. Pronotum with the membranous margins rounded and feebly raised, with a single row of 
large tetragonal areole; the hood very widely reticulated, the areole tetragonal or pentagonal ; the disc 
on each side of the hood closely punctured. Elytra with the sutural and costal areas subequal in 
width beyond the discoidal area; the costal area depressed, with three rows of large areole at the middle, 
diminishing to two at the base; subcostal area vertical, triseriate, the external areole very minute. 
Length 42, breadth 21 millim. 
‘Hab. Panama, Bugaba, Volcan de Chiriqui (Champion). 
Nine specimens. 
CORYTHUCHA. 
Corythucha, Stal, Enum. Hemipt. iii. pp. 119, 122 (1873). 
The described members of this genus are all American (North and South), save 
one, and that will probably have to be separated. The species seem to be fairly 
numerous in the United States, and also in Central America, whence five are now 
enumerated *. They may be differentiated as follows :— 
Pronotal hood large or moderately large, globose behind; median carina 
foliaceous. 
Marginal spines of the pronotum and elytra rather short and slender. 
Elytra broadly bifasciate ; areolz of the sutural area very unequal in size. fuscigera, Stal. 
Elytra with faint transverse darker lines, sometimes forming three fasciz. decens, Stal. 
Elytra with a post-basal fascia and some spots on the nervures towards 
the tip toe ee ee ee ee ww wwe untfasciata, n. sp. 
Marginal spines of the pronotum and elytra longer and stouter; elytra 
with a post-basal fascia and some spots beyond the middle . . . . spinosa, A. Dugés. 
Pronotal hood smaller, not globose behind; median carina feebly raised . . setosa, n. sp. 
* ©. incurvata, Uhler, recorded from ‘ Mexico,” does not belong to our fauna, it being from Lower 
California. 
