134 HEMIPTERA-HETEROPTERA. 
Allied to C. antennator, Fabr., from which it differs principally by the different 
structure of the lateral angles of the pronotum. ; . 
2. Chariesterus albiventris. (Tab. XIII. fig. 11.) 
_Chariesterus albiventris, Burm. Handb. u. 1, p. 317. 4°; Stal, En. Hem. i. p. 178, 3’. 
Hab. Mexico (Mus. Berol.), Oaxaca 1. 
The figure is taken from a typical specimen in the collection of the Berlin Museum. 
In a second Mexican example the white pubescence of the underside of the body is 
absent. | 
3. Chariesterus mestus. (Tab. XIII. fig. 12.) 
Chariesterus moestus, Burm. Handb. ii. 1, p. 817. 5'; Stal, En. Hem. i. p. 179. 5”. 
Chagiesterus mestus, Dall. List Hem. ii. p. 511. 3°. 
Hab. Mexico ?3 (Mus. Berol.), Oaxaca}, Orizaba (Bilimek, Mus. Vind. Ces.); Gua- 
TEMALA, San Geronimo (Champion).—V ENEZUELA ®. 
I have examined an extraordinary specimen of this insect, contained in the Vienna 
Museum, in which the antenne are asymmetrical, the left antenna having the third 
and dilated joint completely absent. One specimen from Guatemala has the underside 
covered with white pubescence, a character which, as seen in the previous species, 
appears to be either purely varietal or else absent by being frequently rubbed and 
worn off. 7 
A Mexican specimen in the collection of the Berlin Museum is here figured. 
PLAPIGUS. 
Plapigus, Stal, Ofv. Vet.-Ak. Férh. 1859, p. 473; ib. 1867, p. 546. 
Plapigus differs principally from Chariesterus by the head being furnished with a 
distinct callosity near the eyes; the antenniferous tubercles are much less produced, 
and the apices are not acuminate; the basal joint of the antenne is only moderately 
incrassated, but thickened near the apex, and is longer than the second joint. 
Only one species is at present known from Central America. 
1. Plapigus circumcinctus. (Tab. XIII. fig. 14.) 
Plapigus circumcinctus, Stal, Ofv. Vet.-Ak. Férh. 1859, p. 473. 3°; En. Hem. i. p. 179. 5°. 
Hab. Mexico 12 (Mus. Berol.), Orizaba (Bilimek, Mus. Vind. Ces.); GuaTeMaa, San 
Isidro, Chiacam, Panima (Champion). 
The type in the Berlin Museum, which I have examined, has the head, as described by 
Stal, luteous. This I believe to be a variable character, as a Mexican specimen in the 
Vienna Museum, and a long series from Guatemala, one of which is here figured, have 
the head either black, or more or less clothed with yellowish pubescence. 
