APPENDIX IV. 325 



Favosites goihlandica, Lamarck. 



There are three examples of this coral, of which two show spini- 

 form septa in the corallites. The smaller of the two specimens, in 

 which septa are seen, is preserved with a small corallum of Acer- 

 vularia austini in the same piece of limestone. 



The horizon indicated by the first and last of the above three 

 species of corals from Beechey island would be about that of the 

 Niagara formation. 



SOUTHAMPTON ISLAND, HUDSON BAY. 



Streptelasma robusium, Whiteaves. 



This large and well marked species, described originally from the 

 Galena-Trenton of the Lake Winnipeg region, is represented by a 

 number of more or less fragmentary specimens. The inner structure 

 is well shown in transverse and longitudinal sections. 



Favosites goihlandica, Lamarck. 



Over forty specimens from this locality are referable to this well 

 known species. In many of them are seen the spiniform septa, char- 

 acteristic of all Silurian favosites, and distinguishing them from 

 all Devonian forms which apparently without exception possess lin- 

 guiform septa. It is possible that more than one species may be here 

 represented. The range in size of the corallites in F. gothlandica has 

 been noticed by the writer in his ' Revision of the genera and species 

 of Canadian Paleozoic corals*,' 1899-1900, but in the present col- 

 lection the fragmentary condition of most of the specimens does not 

 admit of characters dependent on the outward form of the corallum 

 being used with any degree of certainty. 



Syringopora veriicillata, Goldfuss. 



A single specimen of this species was obtained at Southampton 

 island. Its corallites average about 4 mm. in diameter and are rather 

 lax and irregular in their growth, the result of which is that the con- 

 necting tubes are poorly developed and comparatively distant. This 

 particular mode of growth is admirably shown in specimens, in the 

 possession of the Survey, from the north end of Lake Timiskaming. 



* In this report the reader will find extended references to the structure 

 of the majority of the species mentioned in these notes. 



