276 THE ESSEX NATURALIST Coptfold Hall, common, many shot by gamekeepers, '63 and '64 (D. Co. and W. P.). Roydon, one found dead, October '64; Fyfield, one seen, October '64 (D. S.). Great Baddow, common, '63 and '64 (R. T.). Mill Green, one seen, April '63 (A. H.). Epping Forest, very common in all parts of forest north of Chingford (many reports). South Weald Park, about twelve seen, February '63 (D. Ch.). Dormouse Muscardinus avellanarius (Linn.) Coptfold Hall, one captured in woodland, '64 (P. U.). Great Baddow, one adult seen, Autumn '63 (R. T.). Harvest Mouse Micromys minutus (Pallas) Flatford Mill area, fairly common in one locality (G. A.). Witham, one caught which produced young in captivity, '64 (C. O.). Maldon, Beeleigh Abbey, one seen being pursued by a weasel, October '64 (E. S.). Brown Rat Rattus norvegicus (Berkenhout) Flatford Mill area, quite common around buildings and in some stream banks, '63 and '64 (G. A.). Rickling, one dead on road, July '64; Great Canfield, one found dead, May '64 (D. Ch.). Chelmsford, one seen on bank of R. Can, July '63 (A. H.). Great Baddow, common on farm land, '64 (R. T.) Abridge, occurs in Roding valley, '63 and 64 (A. W.). Chingford, seen occasionally in Yardley Lane area of Epping Forest (T. L. and D. Co.). Rom- ford, common on sewage farm, '64 (K. B.). Water Vole Arvicola terrestris (Linn.) Flatford Mill area, common on R. Stour, '63 and '64 (G. A.). Easton near Dunmow, one seen, November '64; Great Canfield, two seen. May '64 (D. S.). Ongar, several in stream near Greensted church, June '63 (D. Co.). (See also trapping section.) Coypu Myocastor coypus (Molina) Dengie, Tillingham marshes, one killed, January '63. Thorpe- le-Soken, one killed, January '63. Glemsford, one shot in gravel pits, February '63. Dedham, one killed, June '63. (All data from J. D. Norris of Ministry of Agriculture.) Porpoise Phocoena phocoena (Linn.) Walton-on-Naze, two strandings, April '63 and May '63 (Zoology Department, British Museum (Natural History)). Killer Whale Orcinus orca (Linn.) Walton-on-Naze, one reported stranded, September '63 (B.M. (N.H.)).