90 HYATT ON THE TERTIARY SPECIES 



rormation « f ," New Pit, South side. 



This consisted of the usual shell-sand, but many of the specimens were incrusted with 

 lime, and had the aspect of transported shells. PI. crescens makes its appearance, but is 

 rare. 

 PL tenuis. PI. discoideus. PI. trochiformis. 



PL 3, line a, figs. 1-3. 



Formation " g," New Pit, South, side. 



This also consists of shell-sand and fossils, but not so abundant as iny. 

 PI. discoideus and PI. trochiformis. 



Formation " h," New Pit, South side. 



This consists of shell-sand, and contains : — 

 PI. parvus. PI. oxystomus. PI. discoideus. 



PI. crescens. PI. minutus. PI. trochiformis. 



PI. 3, line a, figs. 4-14. 



Formation "i," New Pit, South side. 



PI. parvus. PI. oxystomus. PL trochiformis var elegans, 



PL crescens. PL trochiform,is. (Very rare). 



The absence of PL discoideus is a fact worthy of remark. 



PI. 3, line a, figs. 15-23, line h, figs. 1-11. 



Formation "k," New Pit, South side. 



This consists of shell-sand and contains : — 

 PL oxystomus. PL costatus var. major. PL trochiformis. 



PL crescens. PL discoideus. 



PL 3, line 6, figs. 12-17. 



Formation " I," New Pit, South side. 



This consists of shell-sand, and contains : — 

 PL oxystomus. PL minutus. PL trochiformis. 



PL discoideus was not found. 

 PL 3, line c, figs. 1-4. 



Formation " m," New Pit, South side. 



This consists almost wholly of clay, and contains : — PL oxystomus, PL crescens, but no 

 PL discoideus; and PL trochiformis becomes exceedingly rare. 

 Plate 3, line c, figs. 5-16. 



Formation " x," New Pit, South side. 



This consisted of the usual shell-sand and broken shells with PL trochiformis and PL 

 discoideus, well preserved and very abundant. 



