2l6 



JOURNAL OF CONCHOLOCY, VOL. lO, NO. 7, JULY, I902 



the ordinary lype of mussel. They are thin and semitransparent, mostly of a 

 yellowish amber colour, sometimes veined with vivid green, and all beautifully 

 clean and bright. Their general appearance is more that of Rlodiolus than iMytilus, 

 and in many cases a peculiar flanging near the umbones occurs which gives the shells 

 a winged appearance. The fact of the shells having to exist in brackish, or at times 

 in comparatively fresh water, may have something to do with the production of such 

 delicate specimens. 



By Mr. R. Cairns: Sinistral Helix pisana from Toulon. 



By Messrs. J. C. Melvill and R. Standen : Cypn^ida; from Western America to 

 illustrate Mr. Button's paper, all but two of the species dealt with being shewn. 



By Mr. R. Welch: Platinotype photographs of scalariform Helix neinoralis from 

 Bundoran, and of various molluscs and their habitats, to illustrate his two papers. 



Special exhibit : The genus Placostyhis. Most of the species known of this 

 group of land shells were shewn from the collections of Messrs. Ed. Collier, R. 

 Standen, B. R. Lucas, F. F. Laidlaw, Y. Taylor, and the Manchester Museum 

 (Layard duplicate collection). An explanatory and descriptive account of the genus 

 was read by Mr. Collier. 



New Records found at ur near AsLon 



Buckinghamshire Mollusca: 



Clinton, 1900-1901. — 



Avion circuijiscyiptiis johnst. , in garden. 



back of house. 

 Limax Jlaviis (L. ), in garden, back of 



house. 

 Agriolimax agrestis L., var.^ sylvalica 



in garden. 

 A. agrestis L. , var. tristis in garden. 

 Vitriiia pellnciJa{Mn\\.), Daniel's Hole. 

 Helix pyginaa Drap. , Daniel's Hole. 

 H. lantellaia^cHr., Daniel's Hole. 

 H. aculeata Midi., Daniel's Hole. 

 H. piilchella Midi., in garden, 



and the var. costafa, in garden. 

 H, aspersa Midi., var. conoidea, in garden. 

 H. caperata Mont. , Wendover Road and 



other roads. 

 — Alfred Leicester {Read before the Society, Ian. 8, 1902). 



Biili>niis obsciints {ls\\\\\-), Daniel's Hole. 

 Pupa mtiscortiin (L.), Daniel's Hole. 

 Vertigo pygincca Drap. , Daniel's Hole. 

 Cochlicopa Ittbrica (Midi.), in garden. 

 Carychiuui ininiimim Midi., Daniel's 



Hole. 

 Planorbis fontanits Lightfoot, Wilslon 



Canal. 

 P. nautilcus (L. ), WilsUni Reservoir. 

 P. contortns {\^.'), Wilston Reservoir. 

 [AiiiHcea trnncatula >Rill. , Halton Canal. 

 Unio tuinidus Phil., Halton Canal. 

 Anodonta anatina {\j.). Halton Canal. 

 Sphceriuin laciistrc Midi., Halton Canal. 



The Hope and Castleton Ramble : Additional Note. —Since the above 

 ramble I have again visited the Castleton district, and in the lane behind Hope 

 Church I obtained the following species : — Helix granulata, Hyalinia ftilva, H. 

 nitidtila, and Carychiuui minimuni. In the River Noe I found LimiuEa peregra 

 and L, truncatula. Limncea peregra was also common in a cattle pond above the 

 Winnatts (1,700 ft.). I also found Helix rotundata var. alba in Cave Dale. As 

 Mr. T. Hey in his list of " Derbyshire .Mollusca," (/. Conch., vol. 6, p. 116, 1889) 

 and Rev. H. Milnes, in his later list {J. Conch., vol. 7, p. 274, 1S93) makes no 

 mention of the occurrence of these species in this part of the county, it may be 

 interesting to record them here. — J. W. Jackson {Read before the Society, Oct. 9th, 



