140 



(2.) From a locality not far distant from the last one (I) Mr. W. 

 Craig, ex-M.P.P., has made an interesting little collection, amongst 

 which the following species have been recognized as not occurring in 

 the previous list : - 



21. Lichenocrinus crater if or mis, HdW. 



25. Amplexopora Canadensis, Foord. 



26. Pachydictya acuta, Hall. 



27. Fasispira elongata, Hall. 



Of these No. 24 is particularly interesting, and differs in some 

 respects from its congener found near Government House, Kideau, 

 some six years ago. It is parasitic on a specimen of Orthis testudinaria, 

 Dalraan, and has a portion of the column preserved. 



(3.) Another exposure of what appears to be a ridge or escarpment 

 of Trenton limestone was observed running slightly obliquely to the 

 road between lot 10, con. X., Eussell, and lot 30, con. V., Cambridge, 

 where the measures have a gentle dip N. 15 E. a few degrees, and indi- 

 cate the presence of a line of dislocation with the remains of an 

 ancient escarpment. No fossils were found in this exposure, however, 

 and accordingly the precise horizon to which this ridge must be referred 

 remains doubtful, but is most probably Trenton. 



(4.) At Casselman, on the Nation Kiver, and below the Canada 

 Atlantic Railway bridge, there is exposed a considerable thickness of 

 Trenton limestone where the Club held one of its most successful excur- 

 sions in June, 1883, and amongst the species collected on that occasion 

 the following have been recognized : 



1. Pal^ophycus obsGuruSfBiWings. 9. Rhynconellaincrebescens, KaW. 



2. Pachydictya acuta. Hall. 10. Cyrtodonta, sp. 



3. Prasopora lycoperdon, Van- 11. Murchisonia hellicincta, Hall. 



uxem. (P. Selwyni, N.) (large variety.) ^ 



4. Streptelasma corniculum, Hall. 12. Trochonemaumhilicatu,m,'H^\\. 



5. Strophomena alternata, GonvSi(\. 13. Asaphus plaiycephalus, Siokef?. 



6. Leptcena servicea, ^owerhy. {/sotehis gigas, DeKay.) 



7. Orthis teatudinaria, Dalman. 14. Serpulites dissolutus, Billings. 



8. Platystrophia, lynx, Eichwald. 



