Fig. 1. 
Fic. 2. 
Fig. 3. 
Fic. 4. 
Fic. 5. 
Fig. 6. 
Fig. 7. 
Fic. &. 
Fie. 9. 
Fic. 10. 
Fie. 11. 
PLATE 30. 
VIVIPARUS COUESI ..---- ---- + - +--+ 2-2-2 ene ee cece ene cece cece eee 
a. Side view of the largest example discovered; natural size. The 
apex above the three last whorls has been restored from another 
example. 
CAMPELOMA MACROSPIRA...--- .--2----0+ ---- --0- ---- ---+ ---- --2----- 
a. Side view, natural size, of Mr. Meek’s type specimen. 
INERITIN AGN ATICINOR MIS os salsaeeitsiee aise eer eetsaetete a eleteleiaalalanatetlaner 
a. Side view ; enlarged to four diameters. 
b. Apertural View of the same. These figures are not very satisfac- 
tory. 
GONIOBASIS| CLEBURNI-sesiscme eerie eeieseeecinsec ne cieeeaieer aeeelsseterat 
a. Side view of an averaged sized example ; natural size. 
b. Apertural view of the same. 
ec. Side view of another example. 
d. Fragment of a large example. 
GONIOBASIS CHR YSALLONDE Aw een ee oe ee eee cele eeieieeine neletatecisetisisne ets 
a. Side view of an imperfect example ; notre size. 
b. Similar view of another example. 
GONIOBASIS (CHRYSALLIS2 oo). c-nelscwieenicmeises sissy seen eyecare ete 
a. Side view; enlarged to two diameters. 
b. Similar view, of another example, the spire of which is naturally or 
otherwise bent. 
GONIOBASIS ENDLICHI .-...-- een ee eI oI a PS Mae MUTA Malis og oN 
a. Side view of an imperfect example, showing the revolving lines 
very distinctly. 
b. Similar view of another example, showing the lines less distinctly. 
ec. Apertural view of another example, from which the lines have been 
removed by attrition. 
All of natural size. 
RY TOPHORUS MERKLE = cece neeemcc eerie eee SES eats Re HS Inet ye: 
a. Side view ; natural size. 
b. Apertural view of another less perfect example. 
ACELLA HALDEMANI .......-----.---- B SMO EO Seo ba CHOH donc acoEsolodoa.s 
a. Side view; enlarged to four diameters. 
b. Apertural view of the same. 
GONIOBASTS MUA CIERRA 2 cc)oig 2s Sue yale ey 2) he oe ch a 
a. Side view ; enlarged to one and a half diameters. 
PHYSA 
a. Side view ; natural size. 
eee - - -g66ed sodeds d4c6s5 S40005 S540 Sood o46o80 sod4.6855 
102 
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92 
91 
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82 
93 
