Welsh Journals

1966 (in a light trap), November 1974, January 1976, April and December 1977 (M. J. M.). Specimens were found in a house in Menai Bridge, Anglesey in November 1946 (J. H.). It was taken in Coed Camlyn, Merioneth, August 1965 (A. B.). C.fumipennis (Steph.) An old record from Llandiloes, Mont. 2.4.24, quoted by Rees Wright, is the only one. C. morsitans (Theobald) Recorded from Llandiloes, Mont. by Burton, and from Caerns. 1922-24 at Pentir, Treborth and Llanfagla (W. R. W.), but no recent records from these counties. Culex pipiens L. Rees Wright described this species as common everywhere in any type of water in Merioneth and North Caerns., 1921-23. Subsequent records from the Bangor area were made in September 1943, August and October 1944, September 1946 (J. H.); December 1971, January and May 1973, September 1974, October 1975, July 1976 (M. J. M.). More recent records in Merioneth include Coed Camlyn, June 1965, and Coed y Rhygen, August 1965 (A. B.); Coed Dol y Bebin, October 1975 (M. J. M.). Among the very few early mosquito records from Denbs. it is interesting that pipiens has twice been recorded from caves. W. Maldwyn Davies (1933) found it hibernating in clusters on walls and roof, 60 yards from the entrance of Cefn Caves, 22 November 1933. J. Hobart found one at Cave Plas, Heaton, 20 April 1951. REFERENCES DAVIES, W. MALDWYN. (1933). North Western Naturalist, 8, 325 WALTON, c. L. (1927). Agricultural Zoology in North Wales. Bangor REES WRIGHT, w. (1923). Ann. trop. Med. Parasit. 17, 539 47 (1924). Entomologist's mon. Mag. 6, 208-210. Department of Applied Zoology, University College of North Wales, Bangor. MOSQUITOES OF LLAY BOG, CLWYD FREDERICK BURKE This paper records the mosquitoes found during a survey of an area of marshy ground known locally as Llay Bog. The Bog is in the grounds of Llay Hall Farm. It is approximately four acres in extent and about 3/4 mile south- east of the village of Cefn-y-bedd near Wrexham, Clwyd (Map ref. SJ 35.323553). The area has been designated as one of Special Scientific In- terest. Llay Bog has a fenland type of vegetation and contains numerous habitats suitable for mosquito breeding. There are many small bog pools, grassy pools, and what may be described as woodland pools that is, pools bottomed by dead leaves and densely shaded by Birch, Willow and Alder trees. In many cases the water is of an acid nature, characterised by ex- tensive growths of sphagnum moss. In some pools there is evidence of contamination by sewage. Six visits were made to the Bog and the months covered were August 1974, August 1975, February 1976, April 1977, September 1977 and Oc- tober 1977.