Foerste.] 
336 
May 1, 
Favosites. 
A few specimens of Favosites were found at Cumberland Gap, 
Tennessee, in all of which the individual tubes are seen to be radi- 
ating from a common centre. None of the pieces are large enough 
to determine whether this gave rise to a semi-spherical or spherical 
body. The largest mass extends 19 mm. from the centre. The sin- 
gle polyp walls are pentagonal or hexagonal in outline, 2.1 mm. in 
diameter, and occasionally show traces of the original, quite scat- 
tered pores. 
Small radiated masses of Favosites were also found at Collins- 
ville, Alabama, the corallites extending about 12 mm. from the cen- 
tre. The tubes are 3 mm. in diameter. In two specimens the walls 
of the tubes are strongly corrugated transversely. 
We have no means of determining whether these specimens are 
the young form of some large tubed, more massive species, or 
whether they form an independent species of the type of Favosites 
Forbesi. 
At Ludlow Falls, Ohio, are found small specimens not exceeding 
30 mm. in diameter, usually somewhat flattened vertically, having 
a surface of medium convexity. The tubes are very unequal in size, 
the largest being 2.2 mm. in diameter, among which tubes of much 
smaller size are abundantly interspersed. The cell walls are dis- 
tinctly crenulated, but no spiniform processes were noticed in the 
tubes. They have very much the appearance on top of Favosites 
Forbesi var. discoidea, figured by Roemer from Tennessee, but the 
tubes of our form are smaller, the radiated interior of that species 
has not been observed, and the epithecal membrane lining the base 
has also not been discovered, so that the Clinton form is almost 
certainly distinct. 
Alveolites Niagarensis, Rominger. 
With all the latitude permitted by Rominger’s description of this 
variable species, one of the forms found at Ludlow Falls may read- 
ily be included. They are however larger than the forms he figured 
from the Niagara of Point Detour and Drummond’s Island, Michigan, 
equalling in width rather those figured by W. J. Davis from the Ni- 
agara near Louisville, Kentucky, but the cells are not all so much 
flattened, being more readily compared in this respect with the types 
figured by Rominger. The average diameter of the cells laterally 
