NATURAL HISTORY, TORONTO REGION
the list of Hymenoptera, and by Mr. E. P. Van Duzee, who arranged the list of Hemiptera, exclusive of the Aphididae and Coccidae. To all of these gentlemen I desire to express my sincere thanks.
The Arachnids of the Toronto district have been almost entirely neglected, and are practically unknown. The only records I have found are those of a few mites taken by Mr. J. B. Tyrrell from birds in 1878-1880 and described by Dr. C. Haller in the " Archiv fur Naturgeschichte " for 1882. The following is a list of these species, revised by Mr. Nathan Banks :
Pteronyssus simplex, Haller. Analges digitatus, Haller. " passerinus, Linn.
tridentulatus, Haller. Megninia aculeatus, Haller.
Allanalges gracilepinneata, Haller.
Class DIPLOPODA and Class CHILOPODA.
Neither the Millipedes nor the Centipedes of the Toronto district have received any attention from zoologists.