24 
MUSEUM BULLETIN NO. 3. 
Sub-order, Tabulata Milne-Edwards and Haime. 
Family, Favositidae Milne-Edwards and Haime. 
Genus, Paleofavosites new genus . 
From the Ordovician and Silurian rocks of Anticosti, 
Billings described Favosites prolificus and F. capax , the latter 
having the pores at the angles and the former having none. 
It has since been learned that the two species are identical and 
also the same as F. aspera d’Orbigny and F. alveolaris Goldfuss, 
the four species having the common character of having the pores 
at the angles with none on the sides. It is proposed to include 
corals of this type under the above generic name. As thus 
defined the species will have for its genotype, F. aspera d’Or- 
bigny. The only other form to be included is a new one to be 
described from the Anticosti section. 
Phylum, Mollus coidea. 
Class, Brachiopoda Dumeril. 
Order, Protremata Beecher. 
Super-family, Orthacea Walcott and Schuchert. 
Genus, Orthis Dalman (s. str.) 
Orthis? lamellosa new species. 
(Plate I, figures 1-3) 
Outline semielliptical, greatest width about halfway from 
beak to border where it is 8 mm.; 7 mm. wide at the hinge line; 
thickness 4 mm. ; length 6 mm. Sides of the shell straight and 
almost parallel, gently and uniformly curving around the an- 
terior-lateral margins; anterior margin for about half the width 
almost straight. Dorsal valve shallow with a broad mesial 
sinus, beak slightly incurved. Ventral valve pyramidal, beak 
highest portion, not incurved; no fold to correspond to the 
dorsal sinus; surface slopes uniformly from the beak to the anterior 
and lateral margins. The cardinal area as long as the hinge line, 
2.5 mm. wide on the ventral valve, almost perpendicular to 
the plane of the lateral margins. Area of the dorsal valve less 
than 0.25 mm. wide and in the same plane as the lateral margins. 
