REPORT ON the; UNIOND^ of ST. JOSEPH RIVER. 287 



structure and appearance a "bunch" of celery; character of the 

 termination of the middle portion of this central compound stalk 

 is unknown having been brqken away, but surrounding this central 

 portion and springing from the base, are two or more heavy rounded 

 succulent stalks 3>^ — 5 inches or more in length terminated by 

 3-4 large heavy elongated lobes giving to the same a unique appear- 

 ance. 



Zearamosus elleria. N. Sp. *-^ 



This species is based upon the new Genus Zearamosus, of this 

 paper, which is perhaps a sufficient description of the species. 

 It is gregarious in habit. This species covers the upper surface of a 

 1-2 inch bed of hard limestone low down in the stratum at Bloody 

 Run, Iowa, three miles southeast from Charles City. There is 

 considerable doubt as to just what sort of a sea plant or sea weed 

 this may have been, as it appears to stand alone as to its peculiar 

 form and structure. In this same stratum, both above and below 

 this interesting horizon, great number^ of "fucoids" sometimes 

 occur. 



This species is named in honor of Mrs. Ella E- Webster, who is 

 the discoverer of this unique plant form. 



Now in the author's collection. 



Buthotrephis thomasia. N. Sp. 



Fossil plant composed of thick succulent stems springing from 

 a common "root"; stems branching; branches divergent; bi- 

 furcating ; from about half an inch to three-fourths inch in height ; 

 growing singly, or in dense bunches three to four inches in diameter, 

 and often in places covering the surface of a certain thin bed of hard 

 limestone. 



Position and locality: Central portion of the middle Devonian 

 ("Cedar Valley") at St. Ansger, West Mitchell, Osage,- Charles 

 City, etc., in north-central Iowa. This is a prominent and really 

 remarkable species of sea weed in the rocks. This species is named 

 in honor of Mr. A. O. Thomas, Professor of Geology in the Iowa 

 State University. 



Now in the author's collection. 



