252 S. W. Ford and W. B. D wight — Fossils obtained 



of C. magnificus collected at Newburgh are flattened so as to 

 present a transverse section precisely like that shown in fig. 

 4 i. For the sake of comparison we have introduced in 

 the text figures illustrative of the columns of G. magnificus and 

 C. grandis from the Newburgh locality. Fig. 5 represents a 

 portion of the column of another species probably of the same 

 genus, which is chiefly remarkable for the slenderness of its 

 transverse joints. Of these there appear to have been not far 

 from 112 in the space of an inch. The specimen was obtained 

 by grinding down the surface of a small fragment of the 

 Canaan limestone, which abounds in other organisms. It is 

 possible that this fragment may represent a new species of 

 Cleiocrinus, and should it turn out to be so, we propose to call 

 it Cleiocrinus Billingsi. 



Associated with the forms above described there occur sev- 

 eral others (figs, t> a-g) all of which may possibly represent 

 portions of large encrinal columns; but as we do not feel satis- 

 fied that they are organisms of this nature, and are unable, at 

 the present moment, to refer them with certainty to the Cepha- 

 lopoda or any other class, we have decided to leave the ques- 

 tion of their exact relations an open one. If Cephalopoda, the 

 apparent absence, in all of the examples, of undoubted septa is 

 noteworthy and remarkable. It is barely possible that the 

 oblique lines seen in the interior of fig. 6 a, and those crossing 

 6 e may indicate septa, but we cannot feel sure upon this point. 

 In one example (fig. 6/) there are faint indications of the pres- 

 ence of a si ph uncle. Some of the specimens, as for example, 

 figs. 6 c and 6 d suggest a comparison with the opercula of 

 Maclurea magna ; and we herewith gladly express our obligations 

 to Prof. H. M. Seely, of Middlebury College, Vermont, for his 

 kindness in generously supplying us with beautiful specimens 

 of such opercula for comparison during our investigations. 



In the specimen represented by figs. 7 a, b, there are shown 

 upon one side (fig. 7 a) certain more or less definite markings, 

 which very possibly indicate original structure ; but we are in 

 doubt as to whether such is really the case. If the markings 

 noticed really represent original structure, they suggest a com- 

 parison of the form with specimens of the opercula of Maclurea 

 magna now before us. It is quite possible, however, that the 

 specimen is only the column of a Cleiocrinus, or rather a portion 

 of one, in which event the markings spoken of might represent 

 the edges of distorted disks. 



Brtozoa. — The only specimen referable to this class that 

 we have recognized among the Canaan fossils, is that shown in 

 figs. 8 a, b. It was discovered upon the surface of a freshly 

 broken fragment of dark colored, richly fossiliferous limestone, 

 and is very well defined. A careful study of it has led us to 



