Fia. 
Fie. 
FIG. 
Fic. 
Fia. 
Fig. 
PLATE 41. 
1. EUOMPHALUS SPRINGVALENSIS .----...-. 50 640555 cob0.G00500 DO0000 SoS 
a. Lateral view of the type specimen; natural size; the outer por- 
tion of the spire being imperfect by erosion. 
b. Umbilical view of the same. 
Qe SPIRITER|(SUBCARDIMMORMES so ois says eee ee eee ceeinice deze 
a. Ventral view of an example from Spergen Hill, Ind.; natural 
size. 
b. Dorsal view of the same. 
ce. Lateral view of the same. 
3. ALLORISMA MARIONENSIS...--..---------.- ------- PURO leet SION see Deen oy 
a. Lateral view ; natural size. 
b. Dorsal view of another example. 
ALN OR TERUG (1D IE GES Ts es es et OSG ea ey a Nn rEg 
a. Ventral view of an example from Mr. Wachsmuth’s collection ; 
natural size. 
b. Dorsal view of the same. 
c. Lateral view of the same. 
d. Interior view of the ventral valve of another example, showing 
the large muscular scar. 
5.. RHYNCHONELLA OTTUMWA.....-- ee eR Sear | REP ey cy teres a NE Te 
a. Ventral view; natural size. 
b. Dorsal view of the same. 
c. Lateral view of the same. 
G5 PLATY CERAG]TRIBULOSUM 222 ensnsie cle cic cievae esate) Soe eee eee 
a. Dorsal view of the type specimen; from Mr. Wachsmuth’s collec- 
tion; natural size. 
b. Lateral view of the same. 
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