A review of the literature shows that extensive work has been done on the morphology and histology of the adrenal gland of the domesticated rabbit, but it appears that little or no work has been done on other members of the order Lagomorpha. Approximately one hundred specimens of rabbits of various ages and sizes, and of both sexes, were collected over a period of nine months. All adrenal glands were fixed by immersion and were embedded in paraffin. The majority or the glands were sectioned at eight or twelve miora, and were stained with Mallory's triple stain. This investigation shows that the gross morphological variations of the adrenal gland of' each species of native rabbits examined is almost as extensive as the variation found within the different genera and families of the order Lagomorpha. There are fewer histological Variations within a given species, but more extensive variations within genera and families of this order. It must be emphasized that not all morphological and histological structures found in the adrenal gland of all rabbits are the same. What may appear to be a typical histological structure or arrangement in one species of rabbit is not necessarily the typical structure or arrangement in all species.