HYDROZOIDS AND COKALS. 116 



Zaphrentis spergenensis Worthkn. 



Zapprentis spergenenis VVorthen, 189U : Geol. t^ur. lUinoiP, vol. VIII, p. 77, 

 pi. X, figs. 8-Sa. 



Small, moderately slender, spiniferous ; very similar to 

 immature individuals of Z. spinulosa, and possibly identical 

 with that species. 



Horizon and localities. — Lower Carboniferous, Keokuk 

 limestone: Wayland (Clark county), Boonville; Keokuk 

 (Iowa); Warsaw ( Iliinios ). 



Zaphrentis chesterensis Worthen. 



Zaphrentis chesterensis Woithen, 1890: Geol. Sur. Illinois, vol. VIII, p 73, 

 pi. ix, figs. 3-3a. 



Corallum like Z, dalei, but rather more slender, less curved , 

 and with only occasional indications of spines. The septal fos- 

 sette is also less distinctly defined. 



Horizon and localities. — Lower Carboniferous, Kaskaskia 

 limestone: Ste. Genevieve. 



Lophophyllum proliferum (McChesney) 



Plate xiii, liga. 8a-b. 



Cyathaxonia prolif era McCheSDey, LS60: Desc. New Palae. Foss., p, 75. 

 Cyaihaxonia prolifera McChegney, 1867: Trans. Chicago Acad. Sci., vol. 



I, p. 1, pi. ii, figs. 1-3. 

 Cyathaxonia sp ? Grinitz, 1866: Garb, und Djas in Nebraska, pp. 65, 66, 



tab. V, figs. 3-4. 

 Lophophyllum proliferum Meek, 1872: U. S. Geol. 8ur. Nebraska, p. 144. 



pi. V, figs. 4a-b. 

 Lophophyllum proliferum White, 1892: U. S. Geog. Sur. w. 100 Merid., 



vol. IV, p. 101, pi. vi, figs. 4a-d. 

 Lophophyllum proliferum White, 1884 : Geol. Sur. Indiana, 13th Ann. 



Kept., pt. ii, pi. xxiii, figs. 6, 7. 

 Lophophyllum proliferum Keyes, 1888: Proc. Acad. Nat. Sci.,Phila., p. 



225. 



Corallum simple, rather small, elongate-subconical, more 

 or less curved ; transversely wrinkled and longitudinally stri- 

 ated, often somewhat spinous; calyx circular, rather deep: 

 columella well-defined ; lamellte 20 to 50 in number. 



Horizon and Localities. — Upper Carboniferous, Upper Coal 

 Measures : Kansas City. 



