APPENDIX 309 



bers, with the cell-wall surrounding them tubulated 

 as in Eozoon, or perhaps in some cases with simple 

 pores like those of Rotalines. They may be dis- 

 tinct organisms, or gemmae, or detached fragments 

 of Eozoon. Some of them much resemble the bodies 

 figured by Dr. Carpenter, as gemmae or ova and 

 primitive chambers of Orbitolites. They are very 

 abundant on some of the strata surfaces of the 

 limestones at Cote St. Pierre. Age Upper Lauren- 

 tian. 



I may add here the characters of Matthew's new 

 genus, Archaeozoon, as given by him : — 



Genus ARCH.EOZOON, Matthew, 

 Skeleton composed of thin concentric laminae 

 convex upward, and having between them a granu- 

 lar layer filled with minute branching canals. 



Arch^ozoon Acadiense, Matthew. 



Habit of growth cylindrical in masses or groups, 

 budding upward. The microscopic characters are 

 thus given by Matthew : ^ — 



" The structures appear to be allied more closely 

 to Cryptozoon than to Eozoon. The microscopic 



^ Bulletin No. ix., Nat. Hist. Soc of New Brunswick, 1890. 



