68 THE ESSEX NATURALIST One dead near Pot Kilns, Romford, September 1966 (D.Co.). Braintree, Walthams, Broomfield areas, common in 1965 (J.S.). Copford, one, September 1966 (A.H.). Hadleigh Castle, common, September 1966 (K.Br.). South Weald, west of the Park, common in 1965. Also seen at Mill Green, Hartswood, Thorndon Park and Warley areas in 1965 (P.S.). Others seen at Blackmore, Mill Green, Theydon Bois, Abridge, and two at Parsons Spring, May 1966. Also Quendon Hall, Hainault Forest and Mill Green, in June 1966. Epping, Mill Green and Braintree, all road deaths, August 1966; Little Yeldham, one seen October 1966, and one road death, Little Leighs, October 1966 (R.C.). Red Squirrel Sciurus vulgaris Linn. Colchester and Great Braxted areas, still present in 1966 (J.S.). Otherwise very scarce. Grey Squirrel Sciurus carolinensis Gmelin Valentine's Park, Ilford, common, March 1965 (K.Br.). Chelmsford and Galleywood areas, quite common, 1965 (J.S.). Great Leighs and Braintree areas, several seen 1965. One seen North End, Felsted, October, 1965. Little Leighs, one seen, October 1966, and one at Hatfield Heath, November 1966 (D.S.). Dudbrook, one seen, November 1966 (D. Co.). Langleys, Little Waltham, present July 1965 (R.W.B.). South Weald Park, very common, 1965, also present at Warley, Shenfield, Hartswood, Mill Green, in 1965. One road death, Upminster, August 1966 (P.S.). Gaynes Park, South Weald Park, seen June 1966. Great Yeldham, Epping Forest, road deaths, October 1966. One seen, Little Yeld- ham, October 1966. Ongar and Colchester, October and Novem- ber, individuals seen (R.C.). Dormouse Muscardinus avellanarius (Linn.) No records available for 1965 or 1966. Harvest Mouse Micromys minutus (Pallas) One found dead on road, Chelmsford, September 1966 (R.W.B.). Lindsell, one seen, October 1966 (J.S.). Brown Rat Rattus norvegicus (Berkenhout) Notley and Braintree areas, common 1965. Three seen at Ardleigh, November 1966 (J.S.). Broomfield, several killed in harvest field, September 1966 (R.W.B.). Brentwood area, four seen in 1965, also others found dead at Blackmore and Warley. Corbets Tey and Great Warley, road deaths, September 1966, and at Aveley, October 1966 (P.S.). Theydon Bois, one seen March 1966. Harlow and Lambourne End, records for August 1966. Sible Hedingham, Writtle, Great Leighs, Ridgewell, road deaths, October 1966. Felsted, one seen, October 1966. Road death,