54 TAL/EONTOLOGY. 



is so brief as to g-ive but a very limited idea of the characters of tlie coral. 

 It is therefore Avith considerable doubt that I refer the form under consider- 

 ation to his species. The fact, however, that it came from the same forma- 

 tion and the same region of country, and possesses all of the few characters 

 mentioned in his description, leads me to think that it may be the same. Still, 

 in order to give those who may not have access to Stansbury's report the 

 means of making the comparison for themselves, I quote below Professor 

 Hall's description: 



"Coral free, turbinate, somewhat rapidly expanding; cells deep; 

 lamellae numerous, thin; outer portion cellular." 



He does not mention the numher of septa (lamella3); but from his state- 

 ment that they are "numerous", and the fact that they are indicated at one 

 point of the mai-gin of the calice, in his figure, as being very closely 

 an-anged and thin, they may be as numerous as in our specimens. That 

 from which his figure was di-awn was split longitudinally very nearly 

 through the middle, and apparently exactly coincident with one of the septa 

 on each side, so as to show little or nothing of the structure within. It 

 evidently had the margins of the calice less worn away than our specimens, 

 which makes the cavity in ours look more shallow. 



From the appearance of a false columella, or portuberance, in the 

 bottom of the calice, I am not sure that this coral would not be more cor- 

 rectly called CUsiophjllum miiUUameUa. If I* am not mistaken, however, in 

 its apparent possession of a septal .fossula, it could hardly be properly 

 placed in the genus ClisiopliiiUum. 



Locality and position. — Tlie typical specimens of Z. midtilamdla came 

 from Cloth Cap and Flat Rock, Great Salt Lake. Those hero referred to 

 that species came from Strong's Knob, on an island in the Great Salt Lake, 

 from a dark-colored Carboniferous limestone. 



Zapurenxis? Stansbuuii. IlillH. 

 Plate fl, figs. 3, 3 a, 3 h, 3 e. 

 ZapUrentis Stansbiirti, Hall (1852), Stansbury's Ileport of E.xploratioiis Great Salt 

 Lake Valley, 408, pi. i, figs. 3 a, b (not Marcou, N. Am. Gcol., vil, fig. 7). 



Coralhnn conical, slightly curved ; epitheca thin, with moderately dis- 

 tinct septal costa?, and small, irregular wrinkles of growth ; calice circular 



