1>KEDK.| Carboniferovs Invertebrates. 21 



in a section below the calyx. The septa are alternately equal, 

 the larger nearly or quite joining the pseudocolumella. Sur- 

 face marked by irregular concentric wrinkles ; spines or rootlets 

 are sometimes present ; septal furrows moderately distinct. 



Range and distribution : Upper Coal Measures ; Kansas City, 

 Lawrence, Osage, Cowley and Elk counties. 



This coral tapers very rapidly from the calyx to the apex, 

 being about as broad as long. 



MICHELINIA. 



de Koninck, Descr. Anim. Foss. Bel*?., p. 29, ( 1842). 



Michelinia eugeneae. Plate II, figs. l*2-12b. 



Michelinia eugrnrce White, 13th Rep. St. Geol. Ind., 1883, pt. n, p. 119; 

 pi. xxiii, ff. H-16, (1884). 



( u'iginal description: "Corallum usually in the form of a 

 small globular or irregularly ovoid mass, higher than broad, 

 with the corallites usually opening upon all sides, except its 

 very small base, which is often concave and irregular ; corallites 

 small, but very irregular in size and shape ; calyces moderately 

 deep, their walls rather thin and margins narrow or even sharp. 

 Height on one of the larger masses in the collection, 26 mm. ; 

 diameter of the same, 17 mm. Diameter of the larger calyces, 

 3 mm. : of the smaller ones, 1 mm." 



Range and distribution : Upper Coal Measures ; Pomeroy, 

 Wyandotte county, Kansas. 



He also remarks that "usually the calcyces cover the whole 

 outer surface of the corallum except the small base, which was 

 evidently attached to some foreign body ; but occasionally a 

 considerable surface above the base is free from calyces, and is 

 covered with a wrinkled epitheca." It may be interesting to 

 note that we have younger masses of but few corallites, one of 

 which is attached to a crinoid stem. 



