IOC) 
AMERICAN SPECIES (IF ARADUS (hEMIPTERA) 
\\ AI.KKlt, FkAXCI.S 
1S()7-1S7;I. ('atiilofiuc of the specimens of Heiniptera-Heteroptera in 
tlie eolleetion of the Hritish Musenm. i to London. 
I'vXplanation of Plates 
'I'he iifiures have been dra'.vn with the eainera lueida, using tlie binocular 
microscope, with several degrees of magnification, but in all cases the an- 
tenna and pronotum are drawn to scale. In comi)aring the figures witli 
specimens, if should t)e borne in mind that some sliglit discrei)ancies are 
to be expected, owing to variation in detail. The figures of genitalia are 
so arranged on the plates as to fa'dlitate comi)arison with specimens jilaced 
in tlu' most favorable positions for ob.servation under the usual lighting 
conditions. 
The following letters are used uniformly in connection with the figures of 
the various species: 
a. \'entral view of the posterior abdominal structures in the female. 
1). The same in the male, usually the terminal jxn-tion only, 
c. Antenna. 
(1. Pronotum, sometimes with more or h'ss of the neighl)oring parts, 
e. Dorsal view of the i)osterior abdominal structures in the female. 
d'h(' following abbreviations are employed: 
aj). III. .\i)ical margin, 
braid). Brachypterous form. 
(1. g. s. Dorsal genital segment, 
en. Lndocorium. 
('X. Dxocorium. 
g. 1. ( icmhal lobe, 
m. .Mesocorium. 
macr. .Macropterous form. 
x-y. Imaginary line showing level of apical angles of .sixth abdominal 
si'gmcmt . 
Ig. f'irst genital segment. 
2g. Second genital segment. 
\'. I'iftli abdominal si'gment. 
VI, .Sixth abdominal segment. 
