GUELPH FAUNA IN THE STATE OF NEW YORK 



2 9 



the pores and spines can rarely be observed ; one was found to possess two 

 rows of alternating pores on the sides. The presence of numerous spines 

 is indicated by pits on the internal casts of cells. These spines are arranged 

 in three or four rows corresponding to as many septa on each side. 



It is safe to consider forms with these characters as identical with F. 

 niagarensis. 



Observations. Whiteaves, 1 in his description of Favosites goth- 

 1 a n d i c u s from the Guelph at Gait, Hespeler, Elora and Fergus, regards 

 Favosites niagarensis Hall as a synonym of that species, but 

 remarks that there are no examples of the typical form ofF. gothlandicus 

 with large corallites, among the Guelph organisms of the survey museum, 

 and that he has seen but a single specimen thereto. On the other hand 

 Mr Lambe, in the Revision of the Madreporaria Perforata and the 

 Alcyonaria* describes F. niagarensis and F. gothlandicus sepa- 

 rately, but only F. g o t h 1 a n d i c us as occurring in the Guelph of Ontario. 

 Milne-Edwards and Haime also regard F. niagarensis as synonymous 

 with F. gothlandicus, but at the same time give a diameter for the coral- 

 lites which is greater than that of the Guelph specimens. Hall expressly 

 stated that his species was distinguished by the size of the cells, and also 

 usually formed small spheroidal masses, characters with which these Guelph 

 specimens are in accord. 



Favosites hisingeri Edwards & Haime 



Favosites hisingeri Milne-Edwards & Haime, Polypiers Fossiles des Terr. 



Paleoz. 185 1. p. 240, pi. 17, fig. 2a, 2b 

 Astrocerium venustum Hall, Paleontology of New York. 1 ^S 2 - 2:120, 



pi. 34, fig. ia-j 

 Astrocerium parasiticum Hall, Paleontology of New York. 1852. 2:122, 



pi. 34, fig. 2a-i 

 Astrocerium pyriforme Hall, Paleontology of New York. 1852. 2:123, 



pi. 34A, fig. ia-e 



1 Paleozoic Fossils, v. 3, pt 2. 



2 Contrib. Canadian Pal. v. 4, pt 1, p. 7. 



