240 ENTOMOLOGICAL SOCIETY 
customed carefulness, collated these records and augmented the same with 
original observations in'his paper entitled " Catalogue of the Myrmecoph- 
ilous Coleoptera, with bibliography and notes," published in the Canad. 
Entom., v. 20, 1888, pp. 161-166. Some additions were published by him 
in the same periodical, v. 21, 1889, PP- 105-108. In the other Orders the 
records of North American myrmecophilous species are extremely meagre. 
Among the Lepidoptera, Helia americalis ; of Orthoptera. two species of 
Myrmecophila ; of the Diptera, one or several species of Mcrodon and an 
unknown dipterous parasite. There are apparently no North American 
records of myrmecophilous Hymenoptera, although in Europe numerous 
species are known as such (genera Neomyrmex, Formicoxenus, Xenomyr- 
mex, Tomognathus, Ceraphron, Diapria, etc.), and no such records of 
Heteroptera, although several species are recorded in Europe, e. g., the 
genus Microphysa. In the Homoptera there are a few short references to 
certain Aphidtdce (by Walsh), but none to Membraczdce, although at least 
one species is commonly met with among ants. In Thysanoptera, Arach- 
nida, and Myriapoda myrmecophilous species or genera are known in 
Europe, but I have not come across any American records, although every 
one who has done any collecting among ants knows that a species of the 
Thysanopterous genus Beckia is extremely abundant in almost every ants' 
nest, and that at least two species of Acarids swarm in the larger colonies 
of Formica Integra and other species. The Neuroptera seem to be the 
only Order of which no myrmecophilous species are known. 
My principal reason for presenting herewith a list of our myrmecophilous 
Coleoptera so shortly after that published by Dr. Hamilton is that I am 
able to add, in a number of instances, the names of the ants among which 
the beetles have been found. Mr. Fred. Blanchard, of Lowell, Mass., has 
been kind enough to send me specimens of the ants among which he had 
discovered Coleoptera ; some other species of ants in connection with their 
Coleopterous inquilines were furnished by Messrs. Ulke and Pergande, 
while the remaining species were observed by Mr. H. G. Hubbard or by 
myself. 
Regarding the names of the ants mentioned in previous records and in 
Dr. Hamilton's list it maybe said that "Formica pennsylvanica " is = Cam- 
ponotus pennsylvanicus ; " Formica herculanea " also = C. pennsylvani- 
cus ;* " Lasius integerrimus /"' is apparently a wrong determination, and 
perhaps =L. claviger ; " Formica rufa" probably also incorrectly deter- 
mined, is either = F. integra or exsectoides, or an allied species. For these 
determinations, as well as for those of the other Formicidce mentioned in 
the following lists, I am indebted to Mr. Theodor Pergande, who is the 
best authority in this country on this difficult group of Hymenoptera, and 
without whose help I would have been unable to prepare the appended list. 
It appeared to me advisable to exclude from the list of myrmecophilous 
* Mr. Pergande considers this as a race distinct from the European C. 
kerculaneus. 
