No. 3.] HUNT— ON CAMBRIAN AND SILURIAN. 311, 



and unitirtg it with the Bangor group or Lower Cambrian. In 

 this I follow, with Lyell and Davidson, the suggestion of Salter 

 and Hicks. 



In the third column, the sub-divisions are those of the New 

 York and Canada Geological Surveys; in connection with which 

 the reader is referred to a table published in 1863, in the 

 Geohgn of Canado^ page 932. Opposite the Menevian I have 

 placed the n-ames of its principal American localities; which are 

 Braintree, Mass., St. John, New Brunswick, and St. John's, New- 

 foundland. The farther consideration of the Americ.m sub- 

 divisions is reserved for the third part of this paper. With re- 

 gard to the classific ition of Angelin, it is to be rcmirked that 

 although he designates II as Regio Olenorum, and III as Regio 

 Conocorypli'irum. the position of these, according to Linnarsi^on, 

 is to be reversed ; the Conocoryphe beds with Paradoxides being 

 below and not above those holding Olenus. The Regio Fucoid- 

 arum in Sweden has lately furnished a brachiopodous shell, 

 Lingula monillfera, besides the curious plant-like fossil, Eoplnj- 

 ton Linnceanum. [Linnarsson, Geol. Magazine, 1869, vi. 393.] 



(The third and concluding part of this paper will appear in 

 the next number of the Natara,list.) 



