liRKSTON : MOI.I.USCA OF GKAKGK-OYKR-SANl)S. 249 



var. ochroleuca Moquin-Tandon. — Occasionally found with 

 type. Low Meathop (J.W.J, and C.H.M.), /. of C, vol. ir, p. 45. 



Acicula lineata (nraparnaud). — This species, like A. /ainellota, 

 completely eluded the search of the writer, although careful and 

 patient attention was given to trying to discover it. It has been 

 discovered in one locality only, viz. : Eggerslack Wood, and on 

 occasions in some abundance, both type and variety. It was first 

 recorded for the district by Mr. R. Standen, as far back as 1897. 



The following extract with reference to this si)ecies is interesting 

 (J ^/ C., vol. 12, p. 94). — "(It) occurred abundantly in company 

 with A. aiukii/a, Vitrea pura, V. radiatula, Euconulus fii/vns, and 

 Carychiian viiiiimum, in thick beds of beech leaves in Eggerslack 

 Wood ; the lower layers of rotting leaves were thickly permeated with 

 the mycelium of some species of fungus, and amongst this the A, 

 lineata swarmed, apparently feeding upon it." It is also said to inhabit 

 the various species of Ahwchantia (liverworts), which usually grow 

 in moist situations. Eggerslack Wood, 1897 (R.S.), /. of C, vol. 

 9, p. 113; (J.W.J, and C.H.M.), 1903,/. of C, vol. ir, p. 45; 

 (F-B.), / of C, vol. 12, p. 19. 



var. alba Jeffreys. — Frequently obtained with the type, and 

 in fair numbers, 1897 (R.S.). 



Neritina fluviatilis (Linn^). — Mr. Jackson says the specimens 

 obtained are "a peculiar small black form," possibly the var. ni^- 

 rescens Colbeau.' Cark and Low Holker (J.W.J, and C.H.M.), 

 /. of C, vol. II, p. 45. 



*Pisidium subtruncatum Malm. — Two or three specimens 

 only found with Z. pereger and S. elegans, in a roadside ditch at 

 Up Holker. 



Pisidium pusillum (Gmelin).— " Only a few examples taken 

 in ditch near the Fell." Meathop Marsh (J.W.J.), Naturalist, May, 

 1907, P- 173- 



Pisidium obtusale Pfeiffer.— A few specimens with P. pusillum. 



Sinistral Helices near Scarborough.— I have the following .sinistral mon- 

 stro.silies in my colleclion ■.—Ilcliiclla caperata, full grown and perfect, taken by 

 myself at Ayton Read Quarry, in 1897 ; Helicella virgala, full grown and perfect, 

 of the var. hUesccns, taken by myself in .Seamer village, 29th August, 1903. — 

 W. GVNGEM, (Real before the Society, Oct. 171I], 190SJ). 



