Discovery Reports. Vol. XXIX, pp. 141-198, Plates VIII, IX, September, 1957.] 



ISOPOD CRUSTACEA 



PART II. THE SUB-ORDER VALVIFERA. FAMILIES: IDOTEIDAE, 

 PSEUDIDOTHEIDAE AND XENARCTURIDAE FAM.N. 



With a Supplement to Isopod Crustacea, Part I. The Family Serolidae 



By 



EDITH M. SHEPPARD 

 Department of Zoology, Cardiff 



