BIBLIOGRAPHY : MOLLUSCA, 1890 AND I8g1. 35 
WILLIAM NELSON. York Mid W. 
Lietittion of Sphzrium lacustre from a pond between Scarcroft and 
acroft; Conch. Soc., 6th August, 1890]. J. of Conch., Oct. 1890, p. 274 
Wan. NELSO Yorkshire. 
Exhibits [to Conch. Soc., Dec. 20th, 1890: malformations of Limnza 
iit from Allerton Ings, near Castleford] J. of Conch. i 1891, p. 310. 
Wo. ee N.W. 
Pabcuscs observed by] The Yorkshire Naturalists’ Union at Leckby 
Carr es — 18th, — 3 Helix cantiana, H., hispida, H. lovniteste Zonites 
keller’ A iarin and var. viridula, Z. nitidulus, Z. purus, Vitrina, 
Arion min A, if morn ety Limunea peregra, Planorbis spirorbis, 
Pisidium pusilla Bythinia tentaculata, Planorbis umbilicatus, Limax 
MAXIMUS, aspersa, 1. genio Physa hypnorum, Planorbis Seat 
zs. fo eicaoa cone four — additional to N.W. Yorkshire]. Nat 
Aug. 1891, pp. 234-235, and i 
WILLIAM NELSON York Mid W. 
Mollusca observed was ons scapes Naturalists’ Union at Gr. gton 
{on June 2 1891; Limax agrestis var. lilacina, Boeri nitidulus, Helix 
a ira i ‘Tobe zdata, Claus ig rugosa Linnea peregra, H. lapicida, 
tna, Z. cellarius, Z. pur Z:<fu ulv wus, £2. crystallinus, Z. glaber, 
pre “2. radiatu ulus, Badlesais obscur us, Pupa umbilicata, V 
on a Ch. ‘lam aeiny Azeca, Zua, Carychium, H. nemoralis, H. arbustorum, 
a pubris, An np ts  gsiae ral Cyclostome, HI. ertcetorum, Pisidium 
ps ears (at Hebden ncinna, Hf. rupestris noted; Vertico edentula 
and purus being ae i this part of Wharfedale]. ’Nat., Sep. 1891, 
Si 268-270. 
WILLIAM NELSON. York S.W. 
Extracts from a Conchologist’s Note-Book [anent journeys to Batley 
and to Havercroft Green in successful search for Limnea glabra; Ancylus 
Quviatilis at Woodchurch, Zozttes alliarius, Z. ex ag Helix aculeata, 
. hispida, H. rotundata, and Z, radiat ulus at Haw k, and Pésidium 
bustllum at Havercroft Green also noted Nat., Sep. eh; pp. 273-274. 
York Mid W., $.E., S. W., Durham, Lanc. W., 
A. M. Norman Westmorland, , Cheshire 
en h Mollusca. Order IV. Pulmonata [repeats 
the Allansford record of Zimax tenells 3 Amalia gagates in sa Durham 
localities, including Burnmoor Rectory garden; Zowites glaber, Preston, 
1837, Marple, Cheshire, and ann flelix nemoralis var. albolabiata, 
(Bean y 
Gass., Grassmere (Jeffreys), var. jeffreysi Baud Planorbis 
dilatatus, Bolton Canal at Pendleton and Galton oe (Thos, Rogers)]. 
Ann. and Mag. N.H., Oct. 1890, PP. 327-341. 
[Cu — OLDHAM. Derbyshire. 
phs cage —— aera flavescens monst. sinistrorsum 
sabi in 1887 at ood Dale near Buxtob} Proc. Soeaks poy Ent.’Soc., 
Oct. 13th, 1887, ore 1888, p. 79. 
CHARLES OLDHAM 
tas Jee Helix arbustorum v. cincta from Castleton, the bands on 
which were as sharply and distinctly defined as those of //. sph 9 usually 
are; ae Soc., 8th Oct. 1890]. J. of Conch., Oct. 1890, p. 
CHAs. OLDHAM. 
Exhibits [to Conch. Soc., Nov. sth, 1890: Helix arbustorum with 
alpestris and favescens, from Miller's Dale]. J. of Conch., Jan. ae p- aay. 
February 1897. 
