THE GUESTS OF ANTS AND TERMITES. 205 
being unattackable, and that finally the ants, taking pleasure in licking 
it, would elevate it to the rank of a true guest. But it is not as simple 
as if appears. In my observation-nests | have had a number of 
Hetacrius for more than five years, and I have come to the conclusion 
that it would be better for this species to be merely tolerated. It is in 
truth licked by the ants, but this is not to its advantage, as the ants 
do not feed it. It is often in great danger. Formica sanguinea and 
pratensis play with it for a quarter of an hour at a time, like a cat plays 
with a mouse, trying to get hold of its jaws, so it is often hurt. Once 
a Hetaerius was so badly used by a Formica sanguinea that it was half 
killed and nearly devoured. Whilst licking the wounded beetle the 
ant’s greed had been awakened. 
So as to give before we finish a systematic review of the classes, 
orders and families of the guests of ants and termites, I have added to 
this treatise a table taken from my Mritischen Veo -zeichniss der myrmeko- 
philen und termitophilen Arthropoden. (Where the Termitophila are not 
- mentioned, the family possess only Myrmecophila.) 
INSECTA. 
(Myrmecophilous 1177, Termitophilous 
105.) 
CoLEOPTERA. 
(Myrmecophilous 993, Termitophilous 
87.) 
CICINDELIDAE (0). 
CARABIDAE. 
Myrmecophilous Carabides (3). 
Termitophilous Carabides (5). 
S@APHYLINIDAE. 
Myrmecophilous Staphylinides 
(263). 
Termitophilous Staphylinides 
(59). 
PSELAPHIDAE. 
Myrmecophilous 
(113). 
Termitophilous Pselaphides(5). 
CLAVIGERIDAE (89). 
PAUssIDAE (169). 
GNostIDak (2). 
EcrrEPHIDAE (7). 
ScYDMAENIDAE (32). 
SILPHIDAE. 
Myrmecophilous Silphides(35). 
Termitophilous Silphides (1). 
TRICHOPTERYGIDAE (14). 
EXNDOMYCHIDAE (9). 
CaToPOCHROTIDAE (1). 
CRYPTOPHAGIDAE (2). 
Pselaphides 
LATHRIDIIDAE. 
Myrmecophilous Lathridiides 
(30). 
Termitophilous  Lathridiides 
(1), 
Cocusipak (7). 
ConypImDak (9). 
NITIDULIDAE (5). 
THORICTIDAE (40) 
HIsTERIDAE. 
Myrmecophilous and termito- 
philous Histerides together 
(128), 
Termitophilous Histerides 
alone (7). 
SCARABABIDAE. 
Myrmecophilous Scarabeides 
(17). 
Termitophilous 
(6). 
ANTHICIDAE (1). 
Crerrpab and CANTHARIDAE (?) 
ALLECULIDAE (2). 
'TENEBRIONIDAE (6). 
CURCULIONIDAE. 
Myrmecophilous Curculionides 
(4). 
Termitophilous Cureulionides 
(1). 
BRENTHIDAE (1). 
CERAMBYCIDAE (1). 
CHRYSOMELIDAE. 
Myrmecophilous 
lides (7). 
Termitophilous Chrysomelides 
(2 ?). 
Eroryiipak (1?). 
CoccINELLIDAE (2 ?). 
Scarabeeides 
Chrysome 
STREPSIPTERA (1). 
HYMENOPTERA. 
(Myrmecophilous 39, Termitophilous 6.) 
FoRMICIDAE. 
Myrmecophilous 
(22). 
Termitophilous Formicidae(6). 
AMPpULICIDI and CRABRONIDAE (1?). 
PHZOMACHIDAE (2 ?). 
BRaAcoNIDAE, CHALCIDIDAR, 
PIDAE (14). 
Formicidae 
PRocrorru- 
Lrprorrena. 
Myrmecophilous Lepidoptera (26). 
Parasitical caterpillars (4). 
Honey-bearers (22). 
Termitophilous Lepidoptera (2). 
