The ideal method of storing a large collection of insects in liquid should have the attributes of compactness, accessibility to specific vials, minimum servicing, and adequate space for expansion. I tried several methods, each of which failed to meet all of these requirements, before developing a storage system that has proved very satisfactory for an expanding collection of immature stages of bark beetles. Since other workers may also have a similar storage problem, the construction details of the special rack used are shown in Fig. 1, and a brief explanation of other details of the method follows.