ACANTHOCEPHALA.—STENOSCELIDEA. 121 
In the Costa-Rican specimens examined the antenne and fore and intermediate 
tibize are pale ochraceous, not castaneous as in the Colombian forms described by Stal. 
I submitted the figures here given to Dr. Aurivillius, who kindly compared them 
with Stal’s type, and reported :—‘ The typical female of Metapodius bicoloripes, Stal, 
agrees very well; but the male placed under this heading by St&l differs from your 
figure prothorace carina media destituto et tibiis posticis vix dilatatis, marginibus 
fere parallelis spinisque femorum post. intus 3-4.” As, however, Stal first described a 
female specimen, with which these Costa-Rican forms agree, the male here figured, 
received from the same place and at the same time, should be typical, and that after- 
wards placed by Stal as such in the Stockholm Museum, and referred to by Dr. Auri- 
villius as above, is probably a varietal form. 
STENOSCELIDEA. 
Stenoscelidea, Hope, Cat. Hem. i. p. 17 (1842, partim). 
Melynthus, Stal, Ofv. Vet.-Ak. Férh. 1859, p. 457. 
Fulicopus, Costa, Rendic. Accad. Napol. ii. p. 259 (1863). 
Several intermediate Neotropical genera between Stenoscelidea and Acanthocephala 
exist, of which no representatives have as yet been received from Central America. 
The structural differences are therefore so considerable, especially in the slender 
posterior femora, that little generic diagnosis need be here given. ‘The posterior tibie 
are dilated and longer than the posterior femora. This genus is also Neotropical; and 
of four recorded species, only one is at present known from Central America. 
1. Stenoscelidea enescens. (Tab. XII. fig. 13.) 
Stenoscelidea enescens, Stal, En. Hem. i. p. 154. 4°. 
Hab. Mexico, Vera Cruz1; GuaTeMaLa, Capetillo, San Gerénimo, Las Mercedes, San 
Isidro, El Reposo (Champion). 
A typical Mexican specimen in the Stockholm Museum is here figured. 
Subfam. COREINAL. 
Coreida, Stal, Ofv. Vet-Ak. Férh. 1867, p. 535. 
Coreina, Stal, En. Hem. i. p. 157 (1870). 
Division ANISOSCELARIA. 
Anisoscelidida, Stal, Ofv. Vet.-Ak. Férh. 1867, p. 543. 
Anisoscelidina, Stal, En. Hem. i. p. 157 (1870). 
Anisoscelaria, Stal, En. Hem. ii. p. 35 (1878). 
This division of the large subfamily Coreine, distinguished by ‘“ Tibiis posticis 
plus minus dilatatis,’ comprises at present about nine Neotropical genera, two of 
these being represented in the Southern Nearctic Region, of which one is also found 
BIOL. CENT. AMER., Rhynch., April 1881. 16 
