ON SOME CARBONIFEROUS MARINE FOSSILS. 145 
aiiaicler, 3 mingling with the other, which is double its size, 
red emarginat aul the entry of the other. Foot im- 
the thickest aa and about 3 er 
ge sl It is probable that these fossils belong to an 
_ estuarine formation. The strata at the Cemetery Hill, whence 
specimens were taken, are light yellowish brown micaceous 
mado full of a coarse waterworn conglomerate, contaimmg 
n inch to 4 
_ Which T exhibit. I have not as yet examined them microscopi- 
ally. The thinness of the shells, the deep sulcated growth, and 
the character of the shells themselves, all poin t to a brackish 
water deposit, such as we find at the mouths of rivers, where 
DS peti 0 
> ndescribed species. I may add that the specimen from whi 
Pala inek's figure was taken was destroyed in the Garden 
im fire, That which I possess is at present the only one - 
j 
Pate EXPLANATION OF PLATES. 
| moe cnet i, ae op = Ti back, and side views of Aphanaia 
4 Figs. 4 ana 5. aay ‘a side view of Aphanaia mitchell, De 
h half nat Fig. 9. Sanguinolites tenisoni, De ‘Kon, nat, size. 
