go Cincinnati Society of Natural History. 



mens still have the central cavit}' filled with foreign material, 

 as in the original figured specimen, while in others this has 

 entirely disappeared. The specimens are then circular, one 

 in particular being napkin-like in shape, without any indica- 

 tion of its having been broken at either end. 



2. — S. suBCVLiNDRic.v, U. P. James, 1.SS4. 



Subcylindrical, hollow, sometimes compressed ; exterior 

 surface covered with prominent monticules, y'y to i,V of ^^ 

 inch high, irregularly distributed; apices and slopes of these 

 with radiating lines or depressions, giving them a stellate 

 aspect ; spaces between the monticules covered with circular 

 or elongate papillae, ^V of an inch apart ; no surface pores ; 

 specimens curved, 2 to 2)2 inches long; internal structure 

 irregularly porous. (Jour. Cin. Soc. Nat. Hist., vol. 7, 1884, 

 p. 20). Labechia montifera, Ulrich, Contrib. to Am. Paleont., 

 vol. I, 1886, p. 33. 



Locality. — Morrow and Clarksville, Ohio, and Madison, 

 Indiana. 



Remarks. — This species is readily distinguished from the 

 previous one. Both are hollow, the interior cavity being 

 filled with some foreign substance in each, but the outer sur- 

 face is very different in having prominent monticules, the 

 tops and sides of which have openings in them. Labechia 

 viontifera, referred to here as a synonym, was described in 

 1886. There are no features given for it which justify its 

 separation as a distinct species. 



3. — S. (?) ijcnKN<)iDp:s, U. P. James, 1879. 



C<x.-nosteum a thin expansion, irregular in outline, parasitic 

 on corals; Y^ to X' inch in diameter, and ){ to '.- line or more 

 thick; surface rugo.se or undulating, and with small, irregu- 

 larly-shaped pores, with occasional larger, circular oscula- 

 like openings ; in some S])ccimens larger and more irregularly- 

 shaped pores are found about the margin. (The Paleontolo- 

 gist, No. 3, Jan. 15, 1879, p. 18). 



Locality. Cincinnati, Lebanon, IJatavia, HIanchester, etc., (). 



