KENTUCKY GEOLOGICAL SURVEY. 57 



or practically so. Acanthopores wanting. Zooecia tain-walled, 

 with very numerous cystiphragms and diaphragms. 



Occurrence : This species appears to begin with the massive 

 form in the lower part of the Fairmount. It becomes abundant 

 in the upper part of the Fairmount and exceedingly abundant 

 in the Bellevue in the vicinity of Cincinnati. In central 

 Kentucky it is abundant in the upper parti of the Fairmount. 

 Specimens were collected at Mt. Sterling and Maysville, Ky. 



6. From the Arnheim Beds. 



BATOSTOMA VARIANS (JAMES). 



Plate 3, figs. 8, 9. 



Chaetetes varians. James, The Paleontologist, no. 1, p. 2, 1878. 

 Monticulipora (ChaBtetes) varians. James, The Paleontologist, no. 5, p. 36, 



1881. 

 Monticulipora varians. James and James, Jour. Cincinnati Soc. Nat Hist, 



vol. 10, p. 177, pi. ii, 4a-b, 1888. 

 Batostoma variabile (in part). Ulrich, Geological Survey of Illinois, vol. 8, 



p. 460, pi. xxxv, 4-4e, 5 (not 5a), pi. xxxvi, 1, 1890. 



Zoarium variable in form, encrusting, lobate, ramose or sub- 

 frondescentu Surface smooth, with scarcely elevated clusters of 

 larger cells. Apertures angular, averaging 6 in 2 mm. Meso- 

 pores angular, varying in number, generally few. Acanthopores 

 numerous, usually in the angles between the zoceecia. Zooecial 

 tubes with thin, slightly flexuous walls and few diaphragms in 

 the axial region ; with walls thickened, and several diaphragms 

 in the narrow mature region which the zocecia enter by a gradual 

 curve. 



Occurrence: Common in the Arnheim (Warren) beds of the 

 Maysville group in Ohio, Kentucky, and Indiana; also abund- 

 ant in the Waynesville beds of the Richmond in the same area. 



7. From the Richmond Group. 



PR^SOPORA ? HOSPITALTS (NICHOLSON). 



Plate 3, fig. 10. 



Monticulipora (Prasopora) Selwyriii var. hospitalis. Nicholson, Genus Mon- 

 ticulipora, p. 209, fig. 45, 1881. 



Zoarium when attached forming crusts which grow r up into a 



