437 



FIELD NOTES. 



FLOWERING PLANTS. 

 The Dwarf Thistle [Carduus acaulis Linn.) in East 

 Yorkshire, a new record for the Riding. I have pleasure 

 in recording- an addition to the list of Flowerings Plants published 

 by Mr. J. F. Robinson in his ' Flora of East Yorkshire,' vis. 

 the Dwarf Thistle, Cardiius acaulis Linn. My attention was first 

 called to the plant by the discoverer, Mr. H. Cox, of Walking-ton, 

 who found it growing- in Beverley Westwood. Other Yorkshire 

 records for the phuit are Conisborough, and near Anston (Lee's 

 ' Flora of West Yorkshire,' p. 280), and near Rievaulx (Baker's 

 'North Yorkshire,' p. 326). Yorkshire appears to be the 

 northern limit of the species. — J. J. Marshall, Beverley. 



POND LIFE. 

 Pond life at Askern. — The following- is a list of Rotifers 

 and other pond life from Skellow Dam, near Askern, taken at 

 the excursion of the Yorkshire Naturalists' Union, on July 12th, 

 1906 : — 



Floscularia ornata. ^ 



Melicerla ringens. 



Euchlanis deflexa. 



Synchaeta treniula. 



Rotifer macruriis. 



Metopidia acuminata. -- Skellow Dam. 



Cathypna tuna. 



Diiiocharis pocilliaii. 



Chcetonotns larus. 



Vaginicola crystallino. 



Halteria grandiuella. ■' 



Triarthra longiseta. \ 



, J . I Campsall Lake. 



Anurcca aciilcata. I ' 



— H, Moore, Rotherham. 

 — : o : — 



COLEOPTERA. 

 Ptinus sexpunctatus at Sheffield. — I have just received 

 a live specimen of a Beetle, Ptinus sexpunctatus., which may be 

 sufficiently rare to be worth noting-. It was found inside a shell 

 included in a Tasmanian collection brought over more than a 

 year ago, and never unwrapped until a few days since. It 

 evidently penetrated the paper wrappings after its arrival in 

 Sheffield. — E. Howarth, Museum and Art Gallery, Sheffield, 

 Nov^ember 7th, 1906. 



iqo6 December i. 



