Silurian Fossils 
107 
specimens here described. It is believed that further study will 
prove this species to be congeneric v^ith Platyaxum platys although 
at present the different forms of growth must distinguish them. 
Brownsport bed: railroad bridge two miles west of Pegram, 
Tennessee. 
Caryomanon patei, sp. nov. 
{Plate I, Fig. 75.) 
Sponge distinctly flattened on what is assumed to be the lower 
side. Upper side strongly convex, rounding into the base. Upper 
surface marked by rather shallow channels which tend to occur 
in pairs or in groups of three, but this grouping is not very evident. 
Some of the deeper channels give a slight lobation to the lower parts 
of the side of the sponge, but this lobation also is very indistinct. 
The oscula, almost a millimeter in diameter open in these radiating 
channels, especially along the upper part of their length. The chan- 
nels become indistinct about 7 to 9 mm. from the center of the top 
of the sponge. The largest specimen found is 43 mm. in width, 
and 21 mm. in height. 
Brownsport bed: near the A. B. Gant place, northeast of Mar- 
tins Mills, in Tennessee. Species named in honor of Mr. W. F. 
Pate, whose collections have contributed greatly of our knowledge 
of the Silurian formations of western Tennessee. 
