PLATE X7II. 

 Chondrites cupressinus (page 141). 



Figure 1, The specimen upon which the description of this species is based. 



Chondrites gracillimos (page 141). 



Figure 2. The type and only known specimen of this species. 



Teichospongia hystrix (page 147). 

 Figure 3. The only specimen that the writer has seen. 



Inocaulis Canadensis (page 149). 



Figure 4. A large but imperfect specimen of this species, from Inmost Island. 



DiPHYPHYLLDM Stoks II (page 152). 



Figure 5. Portion of a colony of this species, from Lower Fort Garry. 



II 5ffi. Longitudinal section of part of one of the corallites of the same, shewing 



tlie tabute. 

 M 56. Transverse section of one of the corallites, shewing the number and 



comparative length of the septa. 



