35 
this latter character may depend simply upon the fact that the small secondary septa were 
neglected in the enumeration. Upon the whole, however, it is safer to keep EZ. Simcoense 
distinct. 
Locality and Formation.—Common in the Corniferous Limestone of Port Colborne, 
Ridgeway, Lot 6, Con. 1, Wainfleet, and also, according to Billings, near the Town of Simcoe. 
ERIDOPHYLLUM VERNEUILANUM (Edwards and Haime). 
Eridophylium Vernewilanwm (Edwards and Haime), Pol. Foss. des Terr. Paléozoiques, 
p. 424, Plate VIII. Figs. 0, 0, a. 
Eridophyllum Verneuilanum (Billings), Canadian Journal, New Series, Vol. IV. p. 131, 
Fig. 26. 
Corallum consisting of Flindrical, straight or slightly flexuous corallites, from four to 
six lines in diameter, united by horizontal connecting processes, placed at intervals of from 
half an inch to an inch and a-half apart. Septa about forty-five in number, alternately large 
and small, extending very nearly to the centre of the corallite, and thus invading the central 
tabulate area, Septa connected in the outer zone of the corallite by numerous dissepiments. 
The distance between the different corallites of the colony varies much, being sometimes half 
an inch or more, whilst in other cases the corallites are nearly or quite in contact. 
Eridophyllum Verneuilanum is readily 
distinguished from ZL. Simcoensc, by the 
much greater size of the corallites, the 
much greater remoteness of the connecting 
processes, and the greater development 
and inward extension of the septa. In- 
crease by parietal gemmation can often be 
observed. The epitheca is marked with 
obscure annulations of growth and vertical 
strize corresponding with the septa. 
In the original description by Milne 
Edwards and Haime, the septa in this 
species are said to be only twenty-two in 
\ Nae ABR number. As pointed out by Mr. Billings, 
AAA Meant however, this depends upon their hay- 
| KK anit a ing counted the primary septa only, the 
total number of septa being thus the same 
Fig. 7. as in our Canadian examples. 
Eridophyllum Verneuilanum, (Edwards and Haime) ; a, Two ae De Bi) : 
corallites, of the natural size ; b, Transverse section of corallite ; Locality and Fi ormation. Corniferous 
c, Transverse section of one of ap corallites of Eridophyllum Sim- Limestone of Ridgeway, common. Also, 
Be eee oo nicrous Dimnestone. * according to Mr. Billings, in the Cornifer- 
ous Limestone of Port Colborne, Lot 19, Con. 3, Walpole, and near Woodstock. 
GrENus CystiIPHYLLUM (Lonsdale). 
Corallum simple, turbinate or cylindrical, rarely aggregate. Interior of the theca filled 
with vesicular tissue ; the septa rudimentary or absent. 
Five species of this genus, viz.: C. Senccaense, Billings, C. grande (Billings), C. sulcatum, 
(Billings), C. Americanwm (Edwards and Haime), and C. aggregatum, (Billings), have been des- 
cribed by Mr. Billings, as occcurring in the Devonian rocks of Western Ontario; and of these 
all but the last have come under my notice as occuring in the Corniferous Limestone. C. vesi- 
culosum (Goldfuss), also occurs in the Corniferous, and very abundantly in the Hamilton 
formation. 
31, CYSTIPHYLLUM SENECAENSE (Billings). 
(Plate VI. Fig. 6.) 
Cystiphyllum Senecaense (Billings), Canadian Journal, New Series, Vol. IV, p. 137. 
Corallum simple, cylindro-conie, or cylindrical, elongated, straight or variously curved. 
Epitheea thin, almost invariably decorticated. Calice deep, smooth, or tuberculated, 
