Paleontology of the Cincinnati (ironp. 



145 



later one of Edwards and Haime. Only one species lias been 

 recorded from the Cincinnati gronp. 



I. — Z. (?) oiiioi'iNSis, James, 1S79. 



Fig. 8. — Zaphrenlis ?; ohioensis. James. Two examples iiat. size. Original. 



Corallum small, simple, .sub-cylindrical, expanding quite 

 rapidly from the base upward ; sharply curved about the 

 middle; epitheca thin; slight undulations, and numerous fine 

 encircling lines crossing the small, closely set, longitudinal, 

 sinuous costit ; margin of calice thin ; interior and septa not 

 known, being covered in all the examples by rock or other 

 corals ; three-fourths of an inch in diameter across the cup 

 and one inch in length. (The Palaeontologist, No. 4, July 10, 

 1879, p. 26.) 



Locality. — Mt. Auburn, Cincinnati, O. 



Remarks. — Subsequent to the published description, the 

 author of this species was inclined to question its validity. 

 It is inserted here in order that it may receive study from 

 others. The figures are from type specimens in Mr. James's 

 collection. 



Genus 2. — Streptelasma, Hall, 1847. 



Corallum simple, turbinate, free ; epitheca well developed ; 

 septa well developed, more or less twisted and united with one 

 another toward the center of the visceral chamber, where thej^ 

 sometimes form a species of vesicular tissue; no columella and 

 no dissepiments ; tabukc remote, irregular, and poorly devel- 

 oped ; a single septal fosette. (Pal. of N. Y., vol. i, 1847, p. 

 69; Nicholson, Pal. of Ohio, vol. 2, 1875, p. 217.) 



Remarks. — The above is the description given by Nicholson, 

 as it is fuller than that of Hall. Numerous species have been 



