PLATE XLV. 
Opalinimi-sone (Moorei-beds). 
Figs. 1 — 12. — DUMOETIEBIA STJBTJNDULATA {BratlCo). 
Pig. 1. — Side view of a coarse-ribbed form with part of the mouth-border preserved. There is no 
test upon the coarse ribs. Buckholt Wood. My Collection. (Page 259.) 
Fig. 2. — Front view of the same specimen. 
Fig. 3, — Suture-line of the same specimen. 
Fig. 4. — Side view of a specimen with the coarse ribs more closely-set. It has all its test present, 
and the mouth-border is well-preserved. The small lateral lappet is apparently complete. Frocester 
Hill (Coaley Peak). My Collection. 
Fig. 5. — Back view of the same shell to show the ventral lappet. The striae crossing the carina 
are a little exaggerated. 
Fig. 6. — Side view of another form, lacking the test. Buckholt Wood. My Collection. 
Fig. 7. — Front view of the same. 
Fig. 8. — Side view of a form with fine, closely set ribs. The artist has, by my direction, taken 
details from both sides to complete this view ; because, though the test is present, the specimen is not 
well-preserved. Frocester Hill (Coaley Peak). My Collection. 
Fig. 9. — Front view of the same. 
Fig. 10. — Side view of a young specimen with AptycJms (one valve) in situ. Penn Wood. My 
Collection. 
Fig. 11. — The Aptychus by itself. Natural size. 
Fig. 12. — The same, enlarged six times. 
Opalinum-zone ? 
Figs. 13, 14. — DuMOETiBKiA EADiosA, vat. GtrNDEESHOFENSis, Haug. 
Fig. 13. — Side view of a specimen with part of the test, but not well-preserved. It shows the 
variations of ribbing. Locality probably Teovil Sands, Bradford Abbas. From my father's Collection. 
(See PL XXX, fig. 18.) (Page 254.) 
Fig. 14. — Front view of the same shell. 
Jurense-zone (Dumortieria-beds). 
Figs. 15, 16. — DuMOETiEEiA Levesqtjei (d''Orligny). 
Fig. 15. — Side view of a very poorly-preserved fragment of the typical form, just indicating the 
ribbing and part of the suture-line. Wotton-under-Edge. My Collection. (See PI. XXXVII, 
figs. 6—8.) (Page 241.) 
Fig. 16. — View of the aperture in outline. 
Opalinum-zone (Moorei-beds). 
Figs. 17 — 20. — DuMOETiEEiA sPAESicosTA, Haug. 
Fig. 17. — Side view of a specimen with well-preserved but very crystalline test. It shows the 
coarse ribs in the inner whorls, and the part-length ribs on the outer whorl. Buckholt Wood. My 
Collection. (For allied species see PI. XXXVII.) (Page 239.) 
Fig. 18. — Back view of the same specimen. 
Fig. 19. — Aperture of the same (in outline). 
Fig. 20. — Penultimate and antepenultimate suture-lines of the same specimen. 
