PLATE XLIX. 
Figs. 1, 2. — Amiltheus mabgaritatus, Montfort. 
Figs. 1, 1 a. — Side aud front views of inner whorls, to compare with inner whorls of Sonninia, &c. 
Magnified four times. Yeovil. (Page 288.) 
Figs. 2, 2 a. — Portion of the same specimen just one whorl later — the bottom of the inner piece 
fits to end of 1 — showing spines and the crenulate carina and sulci suggestive of Amaltheus coronatus. 
Maguified twice. 
Figs. 8, 3 a. — Amaltheus nudus, Queiistedt (PRiESTABiiis, Hyatt). 
Figs. 3, 3 a. — Side and front views of the inner whorls. Magnified twice. Marlstone, Dudbridge, 
Stroud. (Page 288.) 
Figs. 4<, 4 a. — Dobsetensia Edouaediana {d'Orbigny). 
Figs. 4, 4 a. — Side and fi'ont views of a little more than the first whorl of a specimen. Magnified 
eight times. Milborne Wick, Somerset. (Page 304 ) 
Figs. 5, 6. — Haplopleuroceeas subspinatum, 8. BucTcman. 
Figs. 5, 5 a. — Side and front views of the first wliorl, magnified eight times. The centre of fig. 5 is 
obscured by matrix. Bradford Abbas. (Page 300.) 
Fig. 6. — Side view of a small specimen showing the single spine at the end of the rib, and later 
the second row of spines appearing. Magnified twice. Bradford Abbas. 
Figs. 7, 7 h. — " Pleuroceras " spinatum {JBruguihre) . 
Figs. 7, 7 a, 7 h. — Side, back, and front views of a specimen. Natural size. The side view shows 
one strong spine in centre, and later a rib swollen at its inner and spinous at its outer end. Fig. 7 a 
shows the commencement of the crenulate carina. Fig. 7 b shows abdomen of inner whorls uncarinate. 
(Page 288.) 
Figs. 8, 9. — Sonninia subspinosa, S. Buckman. 
Fig. 8. — Side view showing spines; 8 «, front view; 8 5, front view and section of two other 
whorls, all magnified eight times. These same inner whorls were drawn in ' Quart. Journ. Geol. Soc.,' 
vol. xlv, pi. xxii, fig. 23 ; but the present drawings seem more correct. (Page 288.) 
Figs. 9, 9 a. — The specimen from which the inner whorls were broken. Stoford, Somerset. 
Figs. 9 5, 9 c. — Suture-lines. Fig. 9 6 taken from the first whorl, magnified about four times ; 9 c 
from the third whorl, natural size. 
Figs. 10 — 13. — Sonninia Sowerbyi (Ifiller). 
Figs. 10, 10 a. — Two views of a fragment of the first whorl. 
Fig. 11. — View of the ventral area of a fragment of the second whorl, showing sulcate-carinate 
ventral area. Magnified six times. 
Fig. 12. — A portion of the third whorl, magnified twice. 
Fig. 13. — Part of the fourth whorl, natural size. Oborne, Dorset. 
Figs. 14 — 17. — WiTCHELLiA SuTNERi {Bratico) ?. 
Figs. 14, 14 a. — Two views of the first whorl. This specimen was drawn in ' Quart. Journ. G-eol. 
Soc.,' vol. xlv, pi. xxii, fig. 25. It was then depicted quite smooth. Mr. Gawan has, however, 
discovered some small tubercles, but I think they are rather exaggerated in his figure. 
Fig. 15. — Ventral area of the second whorl. The keel is certainly too pronounced. 
Fig. 16. — Ventral area of the third whorl. 
Figs. 17, 17 a. — Two views of portion of outer whorl. Natural size. Oborne, Dorset. (The ribs 
are not coarse enough.) 
Concavum-zone. 
Figs. 18 — 20. — ZuRCHERiA PARVispiNATA, 8. BucJcman. 
Fig. IS. — Side view of a fine specimen, with test, showing the loss of spines on the last whorl. 
I purchased this fossil from the Collection of the late Dr. Wright. The locality is not recorded, but 
its matrix undoubtedly warrants my saying Cojicavum-zone of Bradford Abbas, Dorset." (Page 29(3.) 
Fig. 19. — Front view. The " false" carina is really too prominent. 
Fig. 20. — Back view, showing the manner in which the ventral area is ornamented. 
Figs. 21, 22. — ZuRCHERiA PERTiNAX (VuceJc). 
Fig. 21. — Side view of a specimen with small ribs and spines. Bradford Abbas, Dorset. From the 
Collection of Mr. Darell Stephens, F.G.S. (Page 297.) 
Fig. 22. — Front view of the same specimen. 
Figs. 1, 4, 5, 8, 10, 11, and 14, are views of fragments broken out of larger specimens. 
