7 
Proceedings. xiii 
they are in the comparatively waterless region south of Croydon. 
The aquatic and waterside plants, however, were not many of 
them yet in flower, and the swollen state of the river and ponds, 
owing to the heavy thunderstorm on May 30th, prevented their 
being easily reached. Hippuris vulgaris (marestail) was plentiful 
in Fetcham Pond. Geranium pyrenaicum and Rhinanthus crista- 
galli (yellow rattle) were found at Fetcham; and Cerastium 
aquaticum by the river at Slyfield. Cnanthe crocata and Nastur- 
tium amphibium grew by the Mole at Cobham; and Viola canina, 
Genista anglica, Lathyrus macrorhizus, Pedicularis sylvatica (a 
nearly white-flowered variety), and Carew pilulifera on Effingham 
Common. A few species of fungi, as Agaricus semiglobatus, 
Marasmius oreades, Boletus flavus, and Atcidium urtica, were seen. 
The results of the day as regards egos celth) and conchology 
are thus given by Mr. Gower :— 
The walk by Fetcham Ponds yielded many varieties of the 
little reed beetles, Donacia sagittarie; the common caddis-fly, 
Sialis lutaria, was also very abundant on the wing here; several 
species of Ephemera also being noticed. From the pond itself 
one member took the freshwater snail, Physa fontinalis; while 
upon the reeds by the bank Succinea putris was very abundant, 
but somewhat small in size, and not fully developed. Heliz 
hortensis (var. lutea) was found on the other side of the path; 
also Hyalinia nitidula and Helix hispida (= H.concinna). Walk- 
ing from here towards Stoke D’Abernon, some of the party who 
got slightly astray from the main party took a lane leading from 
HKastwick Park, and coming out to the road skirting a part of 
Great Bookham Common. On the way the beetle “Pelephor us 
lividus was taken; the snail Helia cantiana was abundant, but 
not full-grown. In the lane skirting the park, many of the 
beautiful dragonfly, Colopterye virgo (female and male), were 
captured ; the well-known spring butterfly H. cardamines being 
frequently met with and captured. Some little ponds by the 
side of the common yielded another little dragonfly, Agrion 
puella (males only). The Mole at Cobham being reached, 
Ephemera vulgata was very abundant. The freshwater mussel, 
Unio pictorum, was found in the Mole, but empty shells only ; 
and also the freshwater limpet, Ancylus fluviatilis. On the way 
to Effingham Junction, a wayside pond at Downside yielded 
Limnea peregra, Planorbis corneus, P. albus, P. vortex, and 
P. complanatus.* 
_ June 18th (Saturday).—Beddington and Carshalton. 
‘June 18th (Thursday).—Botanical Section, evening excursion 
(see p. xix). 
* This name has been altered during the last few years, since 1892, to 
P. umbilicatus. 
