The collection of New Zealand and foreign Porifera assembled by the late Professor H. B. Kirk is catalogued. Type material is designated for fourteen of the sixteen species which were described by him. Hitherto unpublished locality and other collection data are given. The holotype specimens of Chalina fistulosa and Clathria intermedia are illustrated. The collection includes merotypes of some of the Challenger Expedition material, and other specimens obtained by Dendy.