OF WASHINGTON. 237 
Mr. Howard called the attention of the Society to some en- 
larged figures of the mouth-parts of Periplaneta orientalis in 
Miall and Denny's work on the Cockroach, in which no indica- 
tion is given of a digitus proceeding from near the tip of the 
lacinia corresponding to the one described by Mr. Howard at a 
recent meeting of this Society.* 
Mr. Howard then briefly reviewed Miss Ormerod's recent book 
on South African Insects, and pointed out the striking similarity or 
correspondence in genus, if not in species, of the pests of the farm 
and garden of South Africa to those of this country. Among the 
insects especially noted were a Cetoniid enemy to figs and peaches 
(Rhabdotis semi pun data) ; Papilio demoleus, represented here 
by the Orange Dog, P. cresphontes ; the little cabbage moth (Plu- 
tella cruciferarum}, widely distributed over the world ; an Orange 
fly ( Ceratitis citriperda], having a habit similar to our Trypeta 
ludens, leery a purchasi, etc. 
Mr. Howard also read Mr. H. Edward's paper on "Noises 
made by Lepidoptera," prepared for " Insect Life. "I 
This very interesting paper called forth' a considerable discus- 
sion by various members relative to the noises produced by Lepi- 
doptera and other insects. 
Mr. Schwarz read the following paper : 
MYRMECOPHILOUS COLEOPTERA FOUND IN TEMPERATE NORTH AMERICA.. 
By E. A. SCHWARZ. 
. Toward the close of the last century it was already known to the ento- 
mologists of that early date that certain insects could be found in the nests 
of ants, but no further attention was paid to the subject until, in 1813, the 
Rev. P. W. J. Mtiller published, in Germar's Magazin der Entomalogie, 
a remarkable paper on the Coleopterous genus Claviger, in which he 
proved that the species of this genus occur exclusively among certain 
species of ants; that the beetles were for their living entirely dependent 
on the ants, which feed and take care of the beetles in order to enjoy the 
licking of a secretion which exudes on the tufts of hair on the first abdom- 
inal segment of the beetle. Muller succeeded also in finding the pupa 
skin of Claviger in the ants' nest, thus proving that its larva also lives 
among ants. His paper attracted a great deal of attention; but, although 
we know now many species of Claviger and many allied genera, our 
*See p. 217. 
f Published in the July, 1889, number of that Journal, v. ii, pp. 11-15. 
