This study was undertaken while the author held a Ministry of Education State Studentship at the Department of Archaeology in Durham and, since October 1961, a Research Fellowship in the University of Birmingham. I would like to record my debt of gratitude to my supervisor Professor Eric Birley and Dr. J.C Mann of the Department of Archaeology in Durham. In the Spring and early Summer of 1960 I spent some time travelling in Yugoslavia, and here I would like to thank some of the many people who helped me to carry out my research. In particular I would like to express my gratitude to Professor Grga Novak, President of the Yugoslav Academy of Arts and Sciences in Zagreb; Professor D. Rendic-Miocevic and Mr. M. Zaninovic of the University of Zagreb; Dr. Esad Pasalio of the University of Sarajevo; Dr. Dimitri Sergejevski and Miss Irma Crremosnik of the Museum in Sarajevo; Dr. B. Gabricevic and Dr. N. Nikolanc of the Archaeological Museum in Split; Dr. M. Suic of the Museum and Historical Faculty in Zadar. Without the generous co-operation of many of the above it would have proved impossible for me to have visited many of the key sites in Dalmatia which lie far away from public transport routes. On this point especially, I would like to thank the Secretaries of the Communes of Zadar and Sinj for placing vehicles at my disposal. For assistance in the preparation of this thesis I would like to acknowledge the help of Mr. C.D.N. Costa and Dr. J.D. Eshelby of the University of Birmingham, and Miss Christine Pittarn of the University Library in Birmingham for undertaking the typing. The absence of a map calls for explanation. For points of topography only detailed maps of the largest scale would be of any value. However, all the places referred to are recorded on Kiepert’s map in CIL III (suppl ii taf. VI), and in the very few instances where this is not the case more precise details of location with regard to neighbouring centres are given.