28 



Report of a Field Meeting held at Bookham Common, 

 June 4th, 1904. 



By Edward Step, F.L.S. Read September 22?id, 1904. 



The attendance at the second field meeting showed a falHng off 

 from the numbers of the first, though we were again favoured with 

 fine weather. A small party went down in the morning and investi- 

 gated the eastern border of the Common, working towards Fetcham. 

 The main body in the afternoon brought the total attendance up to 

 nineteen. Some time was spent around the large ponds, but these 

 were not found so productive as usual. Then a course was taken 

 through the woods to the north. 



The plants in flower noted included : Lesser marsh wort {Helos- 

 ciadiim inundalum), hhds-iooi {Ornit/iopiis perpusiHi/s), marsh speed- 

 well {Vero?u'ca sciitellatd), water speedwell (F. anagaiiis), germander 

 speedwell ( V. cha/iuedrys), brooklime ( ]\ beccabiifiga), wood loose- 

 strife iyLysimacliia uetnorum), lousewort {Fedici/Inris svh'afica), eye- 

 bright {Euphrasia offici/ia/is), petty-whin {Genista anglica), bugle 

 {Aji/ga reptaNs), tuberous bitter vetch {Latliyriis macrorhizus), water- 

 cress {Nasturtium officinale), bush vetch ( Vicia sepium), broad-leaved 

 pond-weed {Potamogetoti iiatans), green-winged o\z\\\?> {Orchis morio), 

 spotted orchis {O. viaculata). 



The mud-horsetail {Ecjuisetum iimosum) with which one of the 

 ponds is filled was in fruit, and Mr. Lucas reports the adder's tongue 

 fern {Ophioglossumvnlgatuni) in the green lane leading to Efiingham 

 Junction. The same gentleman reports the parasitic fungus EpicJiliv 

 typhina on grass, and on it were the larvee of the fly Anthomyia 

 spreta, which devours the fungus, making radiating excursions from a 

 central shelter made by itself something after the manner of a coccid. 



The Lepidoptera have been reported by Messrs. South, Scollick, 

 Turner, Bishop, and Ashby. The list includes : 



Euchloc cardamines, Lyccena icarus, Ca'no7iyiipha pamphili/s, Sy- 

 ricJithus matzue, Drepana binaria (= hamula), Heliaca tenebrata 

 (= arbuti), Tephrosia punctularia, Zonosoma punctaria, Acidalia 

 remutata, Panagra petraria^ Bapta temerata, Eupithecia castigata, 

 E. vulgata, E. exiguata, Melanippe iniangi/lata, Coremia desigfiata, 

 C. unidentaria, Penthina pri/inana, Pardia tripunctana, Catoptria 

 iilicetaua, G/yphipteryx fuscovirideita, Pieris rapie, P. napi, P. brassicce, 

 J\dyo>nmati/sp/i/a'as, Nisoiiiades tages, Thecia ritbi, Gonepteryx rham/ii, 

 Asthena caiididata, Eupithecia lariciata, Larentia pecti/iitaria, Me- 

 la/ithia oce/Iata, Alelafiippe sociata, Apamea basi/i/iea, Hadena genistce, 

 Larentia viridaria, N'octua p/ecta, Cidaria Iruncata {= russata), 

 Cahera exanthemaria, and Pcedisca solandriana. 



