HYDROZOIDS AND CORALS. 107 



Corallam usually forming large astmeiform masses, com- 

 posed of long polygonal corallites, which increase by budding 

 at the margins of the calycinal disks. Calyces rather deep, 

 obliquely spreading upward to the margins ; the central basal 

 portions reflected upward into a rather conspicuous cone. 

 Radic-il lamellae from 20 to 40 in number. 



Horizon and localities. — Lower Oirboniferous, St. Louis 

 limestone: St. Fraucisville (Olark county), Ste. Genevieve, St. 

 Louis. 



Campophyllum torquium (Owen). 



Plate xii, figs. 7a-c, and plate xiii, flg. 7. 



Cgathophyllum torquium Owen, 1852: Geol. Sur. Wisconsin, Iowa and 



Mianesota, tab. iv, fi». 2. 

 Caynpophyllum torquium M.eek, 1872 : U. S. Geol. Sur. Nebraska, p. 145, 



pl.i, fig. 1. 

 Campophyllum torquium White, 1884 • G-eol. Sur. Indiana, ISth A.nn. Rept., 



pt. ii, p. 119, pi. xxiii, figs. 10-13. 



Corallum solitary, large, flexuous, more or less wrinkled ; 

 calyx circular, deepening abruptly toward the center; septal 

 fossette distinct. Primary lamellse about 40 in number, reach- 

 ing from the margin half way to the center; secondary septse 

 small ; tabulae large, arched ; dissepiments numerous. 



Horizon and localities. — Upper Carboniferous, Coal Meas- 

 ures : Kansas City. 



Axophyllum rude White & St. John. 

 Plate xii, figs. 5a-b. 



Axophyllum rude White & St. John, 1867 .- Trans. Chicago Acad. Sci., vol. 



1, p. 115. 

 Axophyllum rude White, 1884: Geol. Sur. Indiana, 13th Ann. Rep., pt. ii, 



p. 118, pi. xxiii, figs. 8-9. 

 Axophyllum rude Worthen & Meek, 1875: G30I. Sur. Illinois, vol, VI, p. 



525, pi. xxxii, figs. 6-6e. 



Corallum simple, broadly obconic, with internal structure 

 much like that of Lithostrotion. 



Horizon and localities. — Carboniferous, Upper Coal Meas- 

 ures : Kansas City. 



