31a. 
Sib. 
32a. 
32b. 
S55 
35p. 
34a. 
34b. 
35a" 
35b. 
36a. 
36b,. 
aia. 
37b. 
Sioa 
38b. 
39a. 
39b, 
40a, 
40b, 
4la, 
4lb. 
42a, 
42b. 
43a, 
43b. 
44a, 
44b. 
= 592 


Amana pale Pays .5.0 ses cso csc cs cs ees es ee serions Oxychilus cellarius 
Animal very dark blue- pine or 
BEMC—H OHA. seis 2s ce See ae ees e ee cs see ene ees Oxychilus draparnaldi 
Whorls with spiral color bands. 0c... ce sew ccscor wee csesasecee 38 
Whorls without spiral color bands.......cccccccsccccrccccscsecs 39 
Widely umbilicate, umbilicus 1/4 or 
more the diameter of the Shells... cle! sisicilels sleleleeceleess Helicella itala 
Narrowly umbilicate, umbilicus 1/5 
er tless tnanthe diameter of the shell... fe Se vce eaiale elec Seewee 34 
Shell larger, adult shell 12mm. 
Pir maniet Por more clay WAGERS ).7.))s ne 2s oe o's eer ey es die shee isle be ele es 35 
Shell medium to small, adult shell 
omaliyiess thanit2 mim. ()) 2anchyin width, 2.52 5 6. ewe eee es 36 
Umbilicus very narrow, 1/8orlessthe 
Gramecer ar ene: SHETE wi es Sas o's ble '0'0 0's 'e'e e's 8 Helicella maritima 
Umbilicus wider, about 1/5 the 
diameter or the Shells. 'c%c sc ie's sees 010 0's & 0's Ee wie Helicella variabilis 
Shell hirsute(covered with fine hairs).......... Helicella conspurcata 
Sila Bipnetetae Suber sige) cote tore ole st cts iene aol els bb we wee ele 6 Oe oe eee 6 Sir 
Spire high and pointed; aperture 
GWBALE:-AATTAEG Sorc alexe ole) 66 oo a 8 ees ayahiehen et ot hhotiahei estan Helicella pyramidata 
Spire low and bluntly convex; 
PREM SaMNE er AARIACL EN OETA TR ACE) +515 cite 7010 faite te Ge “elsi/ste%ey's "ote Pete's ete ee ele eee 0 eid wes 8 38 
Surface with rather heavy, close, 
RatseCeEANGVEES Ee! LINCG slo's: c 6 sia ose 0 208 bat slere. @esenéje Helicella striata 
Surface without prominent 
BESO ESC e EVENS toilet alice te hale “</taitctuite.(0'\e,%0--ae ta,"0 Ce Ke ve te '0 Ye Helicella caperata 
Shell larger, adult. shell 14 mm. 
fe losmiciorcemone an width. = s).% ..ccele Sto. otdidan deca hk bee 40 
Shell smaller, adult shell less than 
PSGriannem le Cantiet) IMuwwAde syle 6 vote ol a oa eo ORS hee oc cece ae 4] 
bast whorl-not deflected. 2.44% 5 5. boo oo ee .-Monacha cantiana 
mash whoriideflected. >... ss thle see bos siene state Monacha carthusiana 
Umbilicus shallow, showing 1/2 
MOAR ESS tana otis cits ss Soe SSS Se Shs Monacha schotti 
Prmabpikeus deep ssnowing all theiwhorls: 2... 2) ses eee eb es oe ee 42 
EPeripveryorlast whorl) rounded... 252. 252086 $42 Hygromia hispida 
Periphery of last whorl obtusely angular.......... Hygromia striolata 
Shell marked with interrupted, 
reddish—-color bands: land. 285, 222.0. Ore. siete ere. 6 Solaropsis monile 
Shell without any color bands; 
PES DS GGISie Bis erie Ain ek a Se a ae a he ee 44 
Relatively large, adult shell 15- 30 mm, 
ey Zale oainches) in, widty..*.... 028 bo Jodeci 14d cS... 45 
Relatively small, adult shell less than 
RObramas (3/8 inch) iniwidth, = 5%... s..6 o+...6 <.0e Armigerus obstructus 
