FOSSILS OF THE CARBONIFEROUS LIMESTONES. 293 



"This small shell is very abundant in the shell limestone of Brook- 

 Beld, Shubenacadie, and in some other localities in Nova Scotia, where 

 it is always associated with Sp. cristatus, of which it may perhaps 

 liter .all be no more than a modification. 



" Camarophoria and Rhynchonella. — The specimens referable to 

 {hose genera sent me by Dr Dawson, as well as those brought to 



igland by Sir C. Lyell, are generally very small, and not in all 

 eases sufficiently complete to warrant a satisfactory determination. 

 I have, however, carefully represented the principal forms. 



Fig. 92 (a). — Cameroyhoria ylubuUmi, Phillips; nat. she and nwjnificd ; (b) varkt;/ 



of the same. 



" Camarophoria (?) globulina (?), Phillips (Fig 92, a, b). 



" Terebratula globulina, Phillips, Encycl. Metr., vol. iv., article 

 'Geology,' pi. 3, fig. 3, 1834. 



" Terebratula rhomboidea, Phillips, Geol. Yorksh., vol. ii., p. 222, 

 pi. 12, figs. 18, 20, 1836. 



u Hemithyris longa, M'Coy, British Pal. Foss., p. 440, pi. 3, D., fig. 

 •_'l, 1855. ' 



" Of this very small shell I have been able to examine only three 

 specimens ; but it is stated to be abundant in a yellow arenaceous 

 limestone at De Bert Kiver, where, according to Dr Dawson's expe- 

 rience, it is always small. I have also felt somewhat puzzled in the 

 determination of this fossil ; but, after having consulted Professor De 

 Koninck, I concluded to refer the specimens to the same species, not- 

 withstanding the apparent difference they present. Professor De 

 Koninck referred one of them to T. rhomboidea, Phillips, which is a 

 .-;. nonyme of Camarophoria globulina ; and after minutely comparing 

 the Nova-Scotian specimens with the Carboniferous and Permian 

 types, I could perceive no difference sufficient to warrant the creation 

 of a new species. The three specimens were exactly of the same size, 

 namely, three lines in length by three in width, and two and a half in 

 depth. The uncertainty which both Professor De Koninck and myself 

 have experienced refers to a specimen which much resembles, in minia- 

 ture, a form of Rhynchonella acuminata; but when we remember 



