cs 
— 
LYMNZIDZ OF NORTH AMERICA. 5 
28-29. Galba apicina (LEA). Menominee River, Mich. (Coll. Walker, 
22891). 
30. Galba apicina solida (LEA). Salmon River, Idaho. (Coll. Hemphill). 
31-35. Galba hinkleyi (BAKER). North Fork Snake River, Idaho. Types 
(23720). 
Figures 4-12, 14-17, natural size; figures 1-3, 13, 18-35, slightly enlarged. 
PLATE XLVIITI. 
Figure 1. Galba apicina (Lea). Type. (Smith. Inst., 118626). 
2. Galba apicina solida (LEA). Type. (Smith. Inst., 118713). 
3. Galba binneyi (Tryon). East of Colville, Wash. (Part of No. 9320, 
Smith. Inst.). 
4. Galba glabra (Mixier). Europe. (23681). Type of subgenus Lepto- 
limnea. 
5-8. Galba randolphi (Baker). Lake Lindeman, Yukon Territory. 
Young and immature (23092). 
Figures 9-12. Galba randolphi (BAKER). Marsh Lake, Dyea Valley, Yukon. 
(Types, 23090). 
13-14. Galba atkensis (Dati). Alaska Moll., pl. II, figs. 7, 9. Types. 
Figures 1-3, natural size; figures 4-8, enlarged 2 1/2 diameters; figures 9-12, 
enlarged 1 1/3 diameters; figures 13-14, enlarged 1 3/4 diameters. 
PLATE XEIX. 
PROTOCONCH OR NUCLEUS. 
(Greatly magnified. ) 
Lymnea stagnalis appressa Say. 
Bulimnea megasoma (HALDEMAN). 
Galba bulimoides techella (HALDEMAN). 
Galba truncatula (LINNE). 
Acella haldemani ((DesH.) BINNEY). 
Lymnea stagnalis appressa Say. View of whorls from above. 
Galba petoskeyensis (WALKER). 
Galba parva (LEA). 
Galba bulimoides techella (HAtp.). 
Galba catascopium (Say). 
Galba palustris (MULLER), 
Galba danielsi (BAKER). 
Galba proxima (LEA). 
Galba jacksonensis (BAKER). 
Galba nasont (BAKER). 
Galba binneyi (Tryon). 
Galba randolphi (BAKER). 
PYOZEP ASM MODAN > 
PLATE. E: 
Small brook near Glencoe, Illinois. Habitat for Galba caperuta (Say). 
Photograph by F. M. Woodruff (Bull. Ill. State Lab. N. H., plate XX). 
