106 



ON THE FOSSIL CORALS OF THE 



many localities in Canada West. Very fine specimens may be col- 

 lected at a quarry on lot No. 6, con. 1, in the Township of Wainfleet, 

 about three miles from Port Oolborne. The cells of the specimens 

 are empty, and display all the characters of the interior as perfectly 

 as could be desired. Near "Woodstock it is found converted into a 

 white crystalline limestone. The specimens are here also very good 

 ones, but in order to observe the distinguishing peculiarity of the 

 species, (the incomplete septa,) it is necessary to grind down the 

 surface, so as to expose the inside of the tubes. 



In England, F. hemispJierica is found in the Devonian formation at 

 Torquay ; and in Spain at Contejo de Castrillon, near Aviles. 



TiGr. 5.— A fragment, selected to show the va- 1 ¥iG. 6.— Shows the incomplete septa. 



riationinthesizeof the tubes in different Fig. 7.— Specimen from near Woodatockj 

 parts of the same specimen. | showing the pores. 



Payosites BASALTICA. — (GrOldfuBS.) 



Corallum forming convex, subspherical or pyriform masses ; eoral- 

 lites variable in size, and either all of nearly an equal width in the 

 same specimen, or with many very small ones interspersed between 

 the larger ; transverse diaphragms thin, flexuous or flat, complete or 

 incomplete ; mural pores usually in one series. The width of the 

 tubes varies from less than one line to two lines. 



The specimens generally referred to this species have a pyriform 

 or hemispherical shape, and small well defined polygonal curved tubes 

 with one row of pores, rarely two. I think, however, that others 

 with a very diJSerent shape should be added, for the following rea- 

 sons : 



In the original description given by Groldfuss he first states that 

 the corallites are prismatic, but ia the conclusion qualifies this char* 



