PLATE II. 
Pig. 1. STROMATOCERIUM MONTIFERUM Ulrich (=Str. huron- 
ense Billings) p 301 
Type of Labechia montifera Ulrich, preserved in the collection of 
Geo. K. Greene, at New Albany, Indiana. From the Saluda 
member of the Richmond group, at Madison, Indiana. 
Pig. 2. LEPTOPOTERION FABERI Miller (=L. mammiferum Ulrich) .p 291 
Type of Chirospongia faberi Miller. A, natural size; B, one 
of the elevations enlarged. In this type, the short vertical 
striae, regarded as parts of spicules, are better preserved than 
indicated in the enlarged figure here presented. No. 8827, in 
the Faber collection at Chicago University. From the Corry- 
ville member of the Maysville group, at Cincinnati, Ohio. 
Pig. 3. PROTAR^A VETUSTA Hall p 292 
Type of Porites ? vetusta Hall, No. 642, in the American 
Museum of Natural History, in New York City. From the 
base of the Trenton, at Watertown, New York. 
PLATE HI. 
Fig. 1. PASCEOLUS TUMIDUS James (=P. darwini Miller) p 287 
Specimen showing stellate grooving of plates. One of the co- 
types, No. 1222, in the James collection at Chicago University. 
Middle of Maysville group, at Cincinnati, Ohio. 
Fig. 2. PASCEOLUS CLAUDEI Miller p 287 
One of the cotypes. No. 8837, in the Faber collection at Chicago 
University. Base of Bellevue member of Maysville group, at 
Maysville, Kentucky. 
Fig. 3. DYSTACTOSPONGIA ? CAVERNOSA n. sp .p 290 
From Cincinnati, Ohio. Label lost, but probably from middle 
of the Maysville group. 
Fig. 4. DYSTACTOSPONGIA MADISONENSIS Foerste p 290 
Specimen found seven feet above chief Columnaria bed at base 
of the Saluda member of the Richmond group, at Madison, 
Indiana. 
Fig. 5. CALAPCECIA CRIBRIFORMIS Nicholson (=C. huronensis) .... p 293 
Type, No. 216, in the James collection at Chicago University. 
Probably from the Richmond group at some unknown locality 
in Ohio. 
Fig. 6. LINGULA VANHORNEI Miller p 306 
Pedicel valve, partly exfoliated, showing the vascular branches 
anterior to the muscular area. Type, No. 8865, Faber collec- 
tion at Chicago University. Lower Richmond, at Versailles, 
Indiana, probably from the Waynesville member. 
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