ee ein te eee Fe Mee 
he Pat Bb ete Bg nt 
' ; Say eee tans 
‘ 
¢ ~ x 
EXPLANATION OF PLATE XXXI. 
LIMNA REFLEXA Say. Near WALKERI Baker. 
LIMNA REFLEXA WALKERI Baker. Only the center fig- 
ure is typical. 
LIMN/ZA REFLEXA EXILIS Lea. Variety. 
LIMN4ZA REFLEXA KIRTLANDIANA Lea. 
LIMN/A CATASCOPIUM Say. 
LIMN#A PALUSTRIS NUTALLIANA Lea. 
LIMN#A DESIDIOSA Say. Variety with rounded whorls. 
LIMNZA WOODRUFFI Baker. 
ANCYLUS SHIMEKII Pilsbry. Not so oblique as the type. 
Enlarged. 
ANCYLUS SHIMEKII Pilsbry. Type form. Enlarged. 
AMNICOLA LIMOSA PARVA Lea. Enlarged. 
POMATIOPSIS LAPIDARIA Say. Enlarged. 
PISIDIUM POLITUM Sterki. Lateral, posterior, and dorsal 
views. 
PISIDIUM SCUTELLATUM Sterki. Lateral, posterior, and dor- 
sal views. 
PISIDIUM WALKERI Sterki. Lateral, posterior, and dorsal 
views. 
PISIDIUM FALLAX Sterki. Lateral, posterior, and dorsal 
views. 
PISIDIUM PUNCTATUM Sterki. Hinge. (The Nautilus, Vol. 
VIII, pl. ii.) Enlarged. 
PIsIDIUM PUNCTATUM Sterki. The Nautilus, Vol. VIII, pl 
ii.) Enlarged. ; 
PISIDIUM VARIABILE Prime. Mon. Am. Corbic., fig.69, En- 
larged. 
PISIDIUM CRUCIATUM Sterki. Hinge. The Nautilus, Vol. 
VIII, pl. ii. Enlarged. 
PISIDIUM CRUCIATUM Sterki. The Nautilus, Vol. VIII, 
pl.ii. Enlarged. 
PISIDIUM PUNCTATUM Sterki. Young specimen. 
PIsIDIUM SPLENDIDULUM Sterki. Lateral and posterior 
views. 
TESTACELLA HALIOTOIDEA Fer. Shell, enlarged. 
LIMNZA PALUSTRIS MICHIGANENSIS Walker. 
LIMN#ZA FERRISSI Baker. 
Figures 13-16 and 22-23 are outline drawings by Dr. Sterki, x10, 
All others, except where otherwise designated, are natural diameter. 
