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November 23, 1914. 
Canada 
Geological Survey 
Museum Bulletin No. 5. 
GEOLOGICAL SERIES, No. 21. 
A Beatricea-like Organism from the Middle Ordovician. 
By Percy E. Raymond. 
Species of Beatricea have long been known from the Rich- 
mond formations of Anticosti, the Manitoulin islands, Mani- 
toba, and Kentucky, but until very recently it was not suspected 
that this type of organism occurred in any older strata. In a 
paper by George W. Stose on the “Carobro-Ordovician lime- 
stones of the Appalachian Valley in Southern Pennsylvania," 1 
Ulrich has listed Beatricea n. sp, as being very common in the 
Lowville. In later papers the name Beatricea gracilis was given 
to this species by Ulrich, but so far as I know, no description 
has yet been published. Through the kindness of Dr. Bassler, 
of the United States National Museum, I have been able to see 
specimens purporting to be Beatricea gracilis , and from them it 
would appear that the form so named is much more slender 
than the species about to be described. The material which 
I have seen showed no internal structure, and was not suitable 
for sectioning, and it is, therefore, impossible to make any real 
comparison with Beatricea gracilis at the present time. 
The specimens about to be described were found just below 
the range of Tetr odium cellulosum and Bathyurus extans, and, 
therefore, just below the base of the Lowville. The writer’s 
first acquaintance with these fossils was in the autumn of 1910, 
when he found a bed containing great numbers of them on the 
hill north of Aylmer, Que., in the highest layer of the formation 
journal of Geology, Vol. 16, 1908, p. 714. 
