APPENDIX IV. 333 



2. Pentameroid shell, not sufficiently well preserved to state de- 

 finitely whether it is Pentamerus oblongus or not, but it 

 strongly resembles a dorsal valve of this well-known form 

 from the Silurian of Europe and North America. 



This rock resembles strongly the rock of Mansfield island, where 

 Dr. Bell obtained a number of fossils, determined by the writer to be 

 Silurian, and possibly homotaxial with the Wenlock and Niagara 

 formations. 



(.ff) In a dark dolomitic limestone. 

 BRYOZOA. 



Some species of bryozo appear in the collection. 

 BRACHIOPODA. 



1. Strophomena, sp. 



2. Strophomena, sp., cf. S. acanthoptera, Whiteaves. 



3. A rhynchonelloid form which appears to be the Camarotoechia 



ekwanensis, Whiteaves. 



4. A smooth form of shell which may be the Glassia variabilis, 



Whiteaves. 



OSTRACODA. 



5. Undetermined forms or imperfectly preserved forms. 



(7) In a rather dark buff-weathering limestone: 

 BRACHIOPODA. 



1. Leptcena (Plectambonites) sericea, Sowerby. A form with 



winged extremities of hinge area. 



2. Strophomena, of the type of S. nitens, Billings. 



3. Orthis (Dalmanetta), sp., cf. D. testudinaria, Dalman. 



4. Rhynchonella, ep. type of R. neglecta, Hall. This may be the 



Camarotcechia ekwanensis, Whiteaves. 



5. A smooth brachiopod which may be a Glassia. 



(/) In a small slab of drab-coloured limestone. 

 ]. Obscure remains of algce or other plants. 

 281 



