10 6 HYATT ON THE TERTIARY SPECIES 



EXPLANATION OF THE PLATES. 

 Plate I. 



Magnified 2 diameters. 



List of Species. 



PI. Steinheimensis var. aequiumbilieatus, line a 1-4, b 17, c 1, 19, in 1-7. 

 PL Steinheimensis line a 5-11, b 2-16, d 5, f 18, h 13, m 8-11, n 1-5. 

 JPl. "^^ar" line a 12-16, m 12-14. 



pj Kraumi i;„p f 1 _3 

 -» '• Sleinlieimensis, """^ 1 ± «J. 



PI- s.e^S^s. line b 1, c 13-14, d 1-4, e 16, n 6, 13. 



PI. tenuis, line c 2-12, 15-18, d 6-17, e 1-15, k 11, n 7-13, 14-15, o 1-7. 



PL discoideus, line f 4-17, g 1-14, h 1-12, i 1-12, k 1-5, 12, 1 1-10, o 8-14, 16 fnamed specimen;, pl-13. 



PL discoideus var. involutus, line d 18, e 17-19. 



PI- 'S^iSeX li'ie k 7, line o 15. 



PI- 'l^M^ (var. elegans Hilg.), line k 6. 



PL trochiformis { — trochif. typus Hilg.), line k 8-10, 1 11-12. 



Check List by LrsES. 



Line a, figs. 1-4 PL Steinheimensis var. aequiumbilieatus, 5-11 PL Steinheimensis, 12-16 PL """'^''^^ 



Line b, fig. 1 PL sidnT^nmsis, 2-16 PL Steinheimensis,^ 17 PL Steinheimensis var. aequiumbilieatus. 



Line c, fig. 1 PL Steinheimensis var. aequiumbilieatus, 2-12 PL tenuis, 13-14 PL stdT^inMs. 15-18 PL 

 tenuis, 19 PL Steinheimensis var. aequiumbilieatus. 



Line d, figs. 1-4 PL steiSHSemu. ^ PL Steinheimensis, 6-17 PL tenuis, 18 PL discoideus var. involutus. 



Line e, figs. 1-15 PL tenuis, 16 PL s„iX^cnmt. 17-19 PL discoideus var. involutus. 



Line f, figs. 1-3 PL sJZ't£.m,. 4-17 i'^- discoideus, 18 P^. Steinheimensis. 



Line g, figs. 1-14 P?. discoideus. 



Line li, figs. 1-12 PZ discoideus, 13 P/. Steinheimensis. 



Line i, figs. 1-12 PZ. discoideus. 



Line k, figs. 1-5 P/. discoideus, 6 PZ. "JSIS? var. e%ans, 7 P/. 'Scia?^^ 8-10 P/. trochifonnis, 11 

 P/. tenuis, 12 P/. discoideus. 



Line 1, figs. 1-10 P/. discoideus, 11-12 PZ. trochiformis. 



Line ni, figs. 1-7 P/. Steinheimensis var. aequiumbilieatus, 8-11 P/. Steinheimensis, 12-14 PZ. "'S""' 



Line n, figs. 1-5 PZ. Steinheimensis, 6 P/. sieiSZ'en^^, 7-12 PZ. fe«J«'s, IB PZ. sfe,„l","fe,w-., 14-15 P/. ^enwis. 



Line o, figs. 1-7 P/. tenuis, 8-14 discoideus, 16 P/. discoideus (named specimen), 15 P/. 'X-'oSelli!* 



Line p, figs. 1-13 PL discoideus. 



Check List by Sections and Formations. 



Formation a. 



Stratum a 1, Second Hole, and a, First Hole,- Old Pit, Sections 5, 6. 



PL Steinheimensis var. aequiumbilicatu.% line a 1-4, b 17, c 1, 19. 



PL Steinheimensis, line a 5-11, b 2-16, d 5, f 18, li 13. 



PL -"-S;"" a 12-16. 



PI- s,.S";;Z.<,, liTie f 1-3. 



PI- «.„t"S»,A-, line, b 1, c 13-14, d 1-4, e 10. 



' Figs. 10-12 are very similar to PL m. parvus Hilg. ' lines k-1, a special suite from the First Hole, Sect. 6 taken 

 'Lines a-k show a mingling of forms from both holes; during my second visit to Steinheim. 



