XIV 
THE CHICAGO ACADEMY OF SCIENCES. 
Page 
Genus BULINNES Haldeman, o.:.c.02 one tee ee oe 183 
5, Mezasona .CSAay ) caeo2s aa es cee ee aa eee 184 
Gents: ACELUA. Haldeman: ... «i. vc.s's:sajae 4 a0 oe Ree 191 
A. haldemant ( Desh’. Binmey.): <a .ca+ 5. cee ee 192 
Genus PrEUROLIMNEA Meek: i... jc\c epee ca os cel eee eee 198 
P  tenuicosia Meek and: Haydent:.......s..4ss0s eee 91 
Genus! |'GALBAC Sclivankes ognan 0 hate wooo ne ena 4 ee 199 
subgentis "Gara Sehianiky .o..s:. 4.2 ad onesie acon a eee 200 
G. trancatula Maney. sts v2.4 see kee cee eee 201 
G. doddst Baker yi) bods soe ee 203 
G. cubensis CP En:) so. ek cts oe eee ee eee 204 
G. cubensis aspirans CEeilsbry)i ee. eee Le ee 208 
G. buhmotdes s (Wea) {oot sara nee ee ee 209 
G. bulimoides techella (Haldeman) 22... ..22.. 1.20 ee 214 
G. bulimoides cockerelli (Pilsbry & Ferriss)............. 217 
G. bulimosdes*causst, Baker=soes oso en eas ace te eee 221 
Gasonomensrs sGrieni phil): seeee eee eee 222 
Gohendersont GBaken)! . 2... cocks Bode o soe toe eee 223 
Giperpolitar (Maltby, fo. <ctiac wie 3s on eae oe eee 224 
Gcaperata (Sayre. Vi sh cs an eee bite BRB 
G. holoollu’ “Beek. Mollet). .22s.050 aeons eee 234 
Subgenus SIMPSONTA, Balket ia)s.s 24 eice.- See eee 236 
 Gumbilicata (Adams) ine fa ake denose ake en cee 236 
G. cyclostoma: (Walker). is 245. sata ac baie ee. cree ee 241 
Gy para Asa)” spevieonk Housed sessed ee Ce 243 
Go parva sterkit, CBakem)<2. 20> jcnctecniase- ace ee 248 
G. owascoensis (Baker) oo. : ec cea sacu 1.0 ae eee 250 
G: idallt \CBaker)’ oc.censeade son os poet anets see 251 
G. pilsbry CHemplatll) soo vetheta. sas os oe teed cals 2 ee 254 
G. ferrucinea *CHald Se eee eon ee ere 255 
Gs humilts (Say) wists See ee en ee ee 25in 
G. humilis qmodicella+(Say)) Neo ee eno eee ee 259 
G. humilis wustica (ea) sere. dase eaasae see ere 268 
GHobrussa (Say) scds Ss a ee eee 270 
Go obrussalpenimsule Walken esac se eee 283 
G: obrussa exigua (sea) a cae ee eee eee 285 
G. obrussa’ decam pi (Steen@):. sA25252 55 sce dea oe 289 
G. galbana. GSay)/.aiaeoce eee eee ne eee 291 
G. petoskeyensis (CWalken Re Sete er be ok cee 295 
Subgentis STAGNICOLAN Meach @. stone ee eee cle oat. | eee 296 
Group of palasteisnts. jes ns.c cee anee MER eee eee wc are eee 298 
G, palustris (MiiMler)).00 6 atc a acces ee oo ee 298 
G.. palustris alpenensis Baker’ 33. us. eee «2 «eae 315 
G. palustris desidiosa (Say) <2. sss eee ee ee 316 
G. palustris blaichieyt Baker). 2: 3: fame ese eee 321 
G. elodesy CSay)) ek Soe es cee SO eee 322 
G. elodes jolietensis (Baker oro oaiches oe. Sates an ne 327 
G. elodes shurtlefin Giryon) ease eee eee 330 
G, rehe*@alSay) isd. cee ee oes eee ete 332 
