INTRODUCTION. vil 
flattened forms living under bark (Leogorrus, Homalocoris, &c.) emit a very offensive 
odour. 204 species are here recorded from Central America, seventy-eight of which 
are treated as new, with seven new genera. 
The Nabidze (by some authors treated as a subfamily of Reduviide) include about 
150 known species, nearly half of which belong to the genus Nadis, and most of 
these being palearctic. Some of the other genera are tropical. Fourteen species are 
enumerated from within our limits, two being described as new, with one new genus. 
The Anthocoride are all of very small size, some of the smallest known Heteroptera 
belonging to this family. Very little attention has been paid to them by collectors 
in the tropics, owing perhaps to their extremely delicate structure, though the group 
was monographed by Dr. O. M. Reuter in 1884. Some species abound in the 
Antillean islands. The most characteristic genus in Central America is Macrotrachelia, 
which bears a strong superficial resemblance to some of the Thripide. Fifty-four 
species are enumerated, with thirty-two new, and seven new genera. 
The Ceratocombide is represented in our collections by a single species of the 
typical genus Ceratocombus. Of the subfamily Schizopterine, however, there are 
five genera known from the Antilles or Tropical South America, all very peculiar 
forms; and one or more of these will sure to be found eventually in Central America, 
Prof. Uhler, indeed, having incidentally noted the presence of Schizoptera in our 
region. They are all minute, delicate insects, living upon the banks of streams, or in 
moss &c. Recent investigations have shown that they are particularly numerous in 
some of the smaller Antillean islands. 
The Cimicide includes the bed-bug and its allies. ‘Two species only have come 
to hand as yet from Central America, one of them being the universal pest mentioned, 
and the other infesting poultry, the latter being taken as the type of a new genus. 
As they are known to attack bats and various birds, many additional forms doubtless 
remain to be discovered. 
The Saldide (termed Acanthiide by some authors) are represented in almost every 
part of the world by one or more species of the typical genus Salda, insects living 
upon the banks of ponds and rivers, as well as in salt-marshes, &c. The subfamily 
Leptopodine is confined to the eastern hemisphere. Ten species of Salda are here 
