FOSSILS OF THE TACONIC SLATE. 69 



Fig. 3. Is an imperfect fossil, which I have suffered to remain for the present without a 

 name. It appears more in the character of a land than of a marine animal. It belongs 

 probably to the Annelidcs, but it is unsafe to speak with nuich confidence on the character 

 of imperfect specimens. It is associated with the trilobites of the black slate. It is remark- 

 able that this locality has not furnished two specimens alike, or of the same genus or species. 

 Several days' works by experienced observers have been spent here, and a great quantity 

 of slate carefully examined : the success, however, has been quite disproportionate to the 

 labor bestowed. 



Plate XV. exhibits three species of J\''erei(es. 



Fig. 3. JVereifes jacksoni, a name conferred from respect to my esteemed friend Dr. C. 

 T. Jackson. It is the largest species yet discovered. 



Fig. 2. JV. loomiiii, is named in honor of my friend Prof. Loomis, of Watervillc College, 

 Maine, to whom I am greatly indebted for specimens and assistance while engaged in the 

 examination of the rocks of that State. 



Fig. 1. J\'. pugnus, a very remarkable fossil, as will appear from the additional figure 

 given of its termination on Plate XVI. 



Plate XVI. fig. 6. J\'ereiks lanccolata, is a beautiful species, not very abundant at Water- 

 ville, but is finely preserved. 



Fig. 5. Myrianites sillimani, closely resembles the murchisoni, but is larger and more 

 distinctly knotted. I have named it with reference to the editor of the American Journal 

 of Science. 



Fig. 4. JV". pugnus. I am disposed to consider this as the caudal extremity, rather than 

 the head. It is the only one which has exhibited distinctly a termination. 



Fig. 3. JV'. gracilis. Only one specimen has been discovered of this species. 



Fig. 2. JV. deweyi, is a very beautiful nereite, which I have named after my distinguished 

 friend Prof. Dewey of Rochester, who in his early geological investigations gave much 

 time to the lower taconic rocks. 



Fig. 1. Myrianites murchisoni, named after the celebrated author of the Silurian system. 



Plate XVII. I have figured two fucoids, which are associated with the fossils of this slate 

 in Washington county, Fucoides fiexuosa and rigida. The first is a long flexuosc leaf: 

 it sometimes appears on the flagging stone of M'Arthur's quarry, two feet in length. The 

 other is much smaller, and appears rather stiff and rigid. Fragments of both species are 

 common in the slate, sometimes quite obscure, especially when weathered, in which case 

 they lose their black color. 



Such are the fossils of the Taconic slate ; few, indeed, but of an exceedingly interesting 

 character. We can hardly expect, however, that the species will be greatly multiplied, or 

 that the localities will be numerous. 



In addition to the fossils of this slate, I have one more to add, of a singular character. 

 It appears to be a tube, perhaps the earthy case of an annelide. Of its organic nature 

 there is no doubt ; and that it was a tube, there is not nmch doubt, as it appears to be 

 partly crushed. It is represented in fig. 10. 



