PLATE XJCIV. 



Placenticeras glabrum (page 1'72). 



Figure 1. Side view of tbe type of tliis species- 

 Figure 1(1. Front view of tlie same specimen, in outline. 

 Figure 16. One side of a sutural line of tbe same. 



CyPRINA SUBTRArE/JFORMIS (page ITU). 



Figure li. Side view of the most i)erfect specimen collected, with the test 

 preserved and shewing the right valve. 



Figure 2a. Similar view of a cast of the interior of a shell of this species, shew- 

 ing the shape of the pallial line and muscular impressions in 

 the right valve. 



Figure 2h. Side view of another cast of the interior of a shell of this species, of 

 somewhat different shape to the last. 



LiNEARIA FORMOSA? (page 171). 



Figure 3. Side view of a perfect right valve of a shell which is su ose to 

 be referable to this species. Twice the natural size. 



SoLEcuRTUs (Tagelus) occidentalis (page ITS). 

 Figure 4. Side view of the type of this species, slightly restored. 



Hydatina parvula (page 180). 



Figure .5. Dorsal view of the type of this species. 



Figure 5a. The same specimen as seen from above, to show the s en spire. 



