This paper is intended as a contribution towards the study of only certain Ionian pot fabrics found at Naucratis. I have, therefore, merely drawn attention to the presence of the Bucchero from Lesbos, which demands a much fuller treatment than I am able to give it. I have also only briefly referred to the Clazomenian Black-faced and Pale Slip Ware because this must be studied in connexion with the fragments of the same ware from Daphnae. Throughout the paper in using the name ‘Naucratite Fabric’ I am referring only to the White Slip ‘Chalice Style,’ which may or may not have been made at Naucratis.In the early eighties of last century, when Professor Flinders Petrie and Professor Ernest Gardner published their account of the first excavations at Naucratis, any strictly systematic classification of the pottery found on the site was practically impossible, owing to the lack of material and data for comparison and identification. Since that date and even since the early years of this century, when Dr. Hogarth made the last excavation of the site, there has been a vast increase in archaeological knowledge and much material is now available. It is in the light of some of this material and this knowledge, especially of that gained from recent excavations either partially or wholly published, that I have ventured to attack the problems presented by the numerous and varied fragments of pottery which were found during the course of both excavations at Naucratis. My studies have had to be limited, practically, to the collections of fragments in the British Museum, the Ashmolean and the Fitzwilliam; but I can safely say, especially in reference to the Naucratite ware proper, that not one single piece of evidence of any real importance derived from accounts of other finds, or from photographs of fragments from other collections, has in any degree refuted, but rather on the contrary has established the conclusions which I had already drawn.