﻿PLATE LXXII. 



Goncavum-zone. 



Figs. 1, 2. — Sonninia, intermediate form. 



Fig. 1. — Side view of a young specimen intermediate between subcostata and 

 suhstriata. It has some rudimentary spines in the inner whorls, but they have 

 escaped the artist's notice. Test present. Natural size. Bradford Abbas, Dorset. 

 (Page 330.) 



Fig. 2. — Section of the whorl in outline, with test. 



Figs. 3 — 5. — Sonninia obtusiformis, 8. Buck-man. 



Fig. 3. — Side view (upper portion) of a grand specimen with test preserved, 

 showing the large reclining ribs. Natural size. Bradford Abbas, Dorset. From 

 my father's Collection. (Page 333.) 



Fig. 4. — Part of the front view, showing the inflated whorls, the large ribs, and 

 the sulcate-carinate ventral area. 1 



Fig. 5. — Part of the suture-line, showing the superior lateral lobe. 



1 The artist has scarcely succeeded in showing the sulcation. 



