PLATE LXXXIV. 
Concavum-zone. 
Figs. 1—3.—Sonninta umbtiicata, S. Buckman. 
Fig. 1.—Side view, test present. My Collection. 
Fig, 2.—Front view. 
Fig. 3.—Suture-line. 
Figs. 4—6.—Sonninia susspinosa, 8S. Buckman. 
Fig. 4.—Side view of the type-specimen, test present. Formerly in the 
Collection of Mr. Darell Stephens, F.G.S. Now in my cabinet. (For the young 
stages of this species see Pl. XLIX, figs. 8,9.) (Page 358.) » 
Fig. 5.—Front view. The overlap is not sufficient. 
Fig. 6.—Suture-line. The terminal lobule of the superior lateral lobe is intra- 
axial. 
Figs. 7, 8.—Sonninia DecoratTA, S. Buckman. 
Fig. 7.—Side view, with test. My Collection. (Page 360.) 
Fig. 8.—Front view. 
Figs. 9—11.—Sonninta suspecorata, S. Buckman. 
Fig. 9.—Side view, test present. (The connate ribs are shown too conspicuous 
at their points of origin, which are also too rounded.) My Collection. (Page 
361.) 
Fig. 10.—Front view. 
Fig. 11.—Suture-line from another specimen, showing a superior lateral lobe 
with the terminal lobule intra-axial and anisosceloid. 
Figs. 12—14.—Sonninia pecora, 8S. Buckman. 
Fig. 12.—Side view, test present. Formerly in the Collection of Mr. Darell 
Stephens, F.G.S. Now in my cabinet. (Page 361.) 
Fig. 13.—Front view. 
Fig. 14.—Suture-line, showing a superior lateral lobe with an intra-axial, 
anisosceloid terminal lobule. 
All the specimens in this plate are from Bradford Abbas, and are pre- 
sumably adult forms. 
