carbonifl:rous species. 51 



ally nearly straight or somewhat flexuous; connecting tubes of about half 

 the diameter of the corallites, arranged in vertical rows, but visually altei-- 

 nating on opposite sides, separated by spaces varying from about once to 

 twice the diameter of the coralHtes ; epitheca thick and showing small 

 wrinkles of growth ; septa unknown ; infundibuliform tabula^, as seen in 

 vertical sections, closely and regularly arranged. 



Length of corallites unknown ; diameter of same, 0.08 inch, separated 

 from each other by spaces varying from 0.08 to 0.15 inch. 



This species is related to S. geniculata, Phillips, and 5*. ramulosa and 

 reticulata of Goldfuss, and may be a variety of one of these forms. After 

 repeated very careful comparisons, however, with the published figures and 

 descriptions of those species, I am left in doubt in regard to the propriety of 

 referring it to either of them. Its corallites are slightly more slender than 

 in S. geniculata, as represented by fig. 2, plate 46, of Edwards and Haime's 

 Monograph of the British Fossil Corals, and decidedly less closely crowded 

 together than represented by their fig. 2 a of the same plate. They agree 

 almost exactly in size, however, with their fig. 4 of the plate cited, which 

 they think probably represents a variety of 8. geniculata. Still the connect- 

 ing tubes are rather more closely arranged than in either of these figures, 

 and the corallites are rather more widely separated. In the distances be- 

 tween its corallites, it agrees more nearly with S. ramulosa ; but its corallites 

 are a size smaller, and generally less flexuous. In the arrangement and 

 general appeai-ance of its tabulre, as seen in vertical sections, it closely 

 resembles Goldfuss' figure, but much less nearly that published by Edwards 

 and Haime. 



Compared with S. reticulata, its corallites are found to be a size larger, 

 less closely arranged, and a little more flexuous, with more closely approx- 

 imated connecting tubes. I suspect that it will be found to be a new spe- 

 cies, or a marked variety of one of the above-mentioned forms, in either of 

 which cases it might be called 8. occidentalifi 



Locality and position.— Soiithvfest of Bald Mountain, Uinta Range, and 

 at Moro-an Peak, Wasatch Range, Utah; in a dark Carboniferous limestone. 



