20 



PAL.iE0NTOL0liy OF NEW-YORTC. 



404. 9. BITHOTUEPHIS GRACILIS? 



Pl. V (bis). Fig. 1. 



This is a specimen in sandstone, where tlie material of the fossil has been removetf, leaving 

 an impression in the stone. 



405. 10. BLTHOTREPHIS PALMATA ( n. sp.). 



Pl. VI, Fig. 1.— Pl. VII. Fig. 1 a, b. 



Stipe strong, thick, romulcd, brandling in a more or less palmate or digitate form ; branches 

 round, thick and strong, terminating abruptly. 



This plant presents a strong roimdod stem, sometimes with sovci.d branches, often with twc 

 or three only ; the branches are usually little divergent. Sometimes the branching takes place 

 altogether from near one point, while in others there is a succession of bifurcations at different 

 distances from the l>ase. Detached branches are frequently found, having the diaracter of simple 

 round stems, which are not especially interesting. 



This species is less abundant than several of the others, and but few specimens have been 

 seen as perfect as those figured. 



In its thick and strong stems and branches, this fossil more resembles a zoophyte than a true 

 marine plant ; and it is not improbable that tiiis, among other species, will prove such, be- 

 longing to the Alcyonidia or to the Sponges. The almost entire absence of calcareous matter 

 has precluded the existence of the calcareous skeletons of the ordinary corals in all the deposits 



of this group in its eastern extension. 



Plate VI. 

 Fig. 1. A specimen showing numerous branches diverging from nearly the same point. 



Plate VII. 

 Fig. 1 a. A specimen where ilie branches separate at different distances from the base. 

 Fig. 1 b. Another specimen, apparently of the same species, showing successive branches from 

 a single stem. This is a very unusual form, thouq-h 1 am not able to find characters 

 to separate it from the preceding one. 



The rugose surface represented in the engraving is due to weathering, and is 

 not a character of the species. (State Collection.) 



406. 11. BUTHOTREPHIS IMPUDICA ( H. 4p.). 



Pl. VI. Fig. 2. 



Stems smooth, strong, round, of nearly uniform size, terminated above by a kind of spongi- 

 form stigma or swelling, which expands at its base beyond the diameter of the stem. 



This is a rare species, not more than three or four individuals having been seen. It is associated 

 with the preceding species in the shaly sandstones. The specimens are probably the branches of 

 a ramose stem. 



Position and locality. Blackstone's and Wadsworth's quarries, New-Hartford, below the 

 lower ore bed. (Stale Collection.) 



