340 Mr. A: H. Foord on 
as they approach ina gentle eurve the surface of the corallum. 
Very few tabule are developed in the axial region of the - 
corallum, and it is not until the surface is nearly attained that 
they occur in greater numbers. Here they are placed at 
irregular distances apart, and are often sharply curved either 
upwards or downwards. The minute crenulations of the walls 
are seen in these sections (see woodcut, fig. D). The minute- 
D 
Amplexopora microstoma, Foord,—A. Corallum of this species of the 
natural size. 1b. Tangential section, enlarged about 30 diameters. C. Part 
of the same section, enlarged about 50 diameters. D, Longitudinal section, 
showing at @ one of the spiniform corallites, enlarged about 15 diameters, 
ness of the corallites separates this species from all others of 
the same genus known to the writer. 
formation and Locality. Wenlock Limestone, Dudley. 
