Canada, who in its pages have always received courteous answers on any subjects in the many branches of natural history affecting agriculture. In the eleven volumes of the ENTOMOLOGIST now published, or in the Annual Reports of the Society, descriptions of nearly all the common Canadian insects, and illustrations of many of them, will be found. I would particularly call attention to a paper in the Annual Report of 1872 by Rev. C. J. S. Bethune, entitled “Beneficial Insects.” This gives an outline sketch in a concise manner of the different divisions into which insects are divided and the distinguishing points of each. With the above mentioned volumes and Dr. Packard’s Guide to the Study of Insects, a very complete knowledge of the rudiments of Entomology can be obtained; the rest can only be learned by observation and experience in the field. Undoubtedly the first and most important step of all is to commence a collection. Study can only be carried on satisfactorily from the actual specimens, which should be examined alive whenever possible and full notes taken of any striking peculiarities observed; when preparing specimens for the cabinet, the one idea which has to be borne in mind, and upon which the whole value and beauty of the collection depends, is that they may appear natural, and a knowledge of how to effect this can only be attained by observing living specimens. At the last annual meeting of the Society the importance of popularizing Entomology was discussed, and the Editor of the ENTOMOLOGIST kindly consented to give up some space every month entirely to popular Entomology, for the benefit of beginners and others who are unable to study the science systematically; this step it was considered might materially increase the usefulness of our Society. It is proposed to have short papers on individual species, which will be illustrated whenever possible, and there will also be papers on the best modes of making and preserving collections. The work will be considerably facilitated if beginners will state any difficulties which they may encounter, for it is only by their mentioning their difficulties that the Editor can know how to assist them. Any questions which are of such a nature that they will be likely to assist others in their studies will be answered through the pages of the ENTOMOLOGIST when space admits. THE CALOSOMAS OR CATERPILLAR-HUNTERS. These insects belong to the Family called CARABIDÆ, which is a large and difficult Family to study, or even to define and limit exactly. The insects belonging to it are remarkable for their graceful forms, and at the same time for their cruel and predaceous habits, both in the larval and perfect states. It is this last trait which makes them such useful auxiliaries to the horticulturist. [Illustration: Fig. 4.]