Vili INTRODUCTION. 
North America, and comprise Lyg@us, Nysius, Geocoris, Ligyrocorts, Cholula, Trapezo- 
notus, and Rhyparochromus. 
PyrrHocorip#.—This family is merged by some authors with the Lygeide. The 
absence of ocelli is the distinguishing character of the family, but in some genera these 
only just reach the vanishing-point, and the position of such insects becomes difficult © 
to determine. 
I have identified 10 genera and 33 species as found in Central America, contrasting 
with 3 genera and 7 species given as found in the Nearctic area, and 2 genera and | 
6 species recorded as belonging to the Argentine fauna. Our 10 genera are thus 
distributed :— 
Nearctic genus, i.e. Central Am. gen. also found north of Mexico . . . a 
Neotropical genera, i. e. » ” ” south of Panama . . . 3 
Neogean genera, 7. é. ” » found north of Mexico and also 
south of Panama . . . . . toe ee ee ew ee? 
Genera at present only recorded from Central America . 8 3 
Genus found in Central America? and nearly throughout the old World . 1 
Of these, two have been recorded from the Antilles; Dysdercus is found in Australia 
and generally throughout the Ethiopian and Oriental regions, whilst Pyrrhocoris rests 
on doubtful or uncorroborated evidence as a Central-American genus. Specimens of 
P. apterus were received in the Van Patten collection as from Costa Rica, but no other 
examples from any of our localities have been secured, nor has any other record been 
made of its presence on the American continent. Moreover, I am informed that a 
few accidental inclusions have been found in this collection. 
In Tertiary times, according to Mr. Scudder, the genus Dysdercus existed in North 
America as at the present time. 
Capsip#.—In this family our collections proved very representative, and I have 
enumerated 80 genera and 313 species as found in our fauna; contrasting with 80 
genera and 156 species in Prof. Uhler’s Nearctic list *, and 26 genera and 58 species 
as recorded by Prof. Berg in the Argentine fauna. 
An analysis of the known distribution of our genera can only be of a fragmentary 
and partial character, as so little is known of the Capside found in the tropical portion 
of South America, and future research in the latter country will doubtless greatly alter 
the deductions now made. 
* Considerable additions both in genera and species have recently been made to the Nearctic Capside ; but, 
as before stated, our comparison is confined to the List published in 1886. 
