86 PALEONTOLOGY OF NEW-YORK. 



Fio-. 3 c. The base of the specimen magnified, to show the fimbriated plate adhering to the base of the 



pelvis. 

 Fig. 3 d. Lateral view of a smaller specimen of the same species, with portions of the fingers remaining. 

 Y'lf. 3 e. The same, showing the base, with a fragment of the column broken off and lying at the side. 

 Fig. 3 / A portion of this column magnified, to show the character of the plates. 



Position and locality. In lire soft shaly layers interstralified with tlic calcareous beds in 

 the lower part of the Trenton limestone, at Middleville, Herkimer county. 



126. 2. SCHIZOCRINUS'? 



Pl. XXIX. Fig. 1. 



A fragment composed mainly of the fingers and tentacula of an encrinite, closely re- 

 sembling, and probably identical with, that figured on Plate XXVII. The joints of the 

 fingers are cuneate ; the tentacula attached to the thicker edge ; the latter plain, and not 

 jointed. The fingers are much longer than those of the specimen just referred to, but the 

 individual was also larger : the number is the same in both specimens. 



Position and locality. In the compact limestone, associated wiih numerous shells of this 

 rock, at Sugar River, Lewis county. (State Collection.) 



BASES OF ATTACHMENT OF CRINOIDEA. 



Pi,. XXIX. Figs. 2 a, b. 



The base or rootlike attachment of the columns of some species of Crinoidea are some- 

 times found in this rock, attached to other fossil bodies. The specimens figured are both 

 attached to a worn specimen of the Chatetes lycoperdon. It is imcertain to what species they 

 belong. 



Locality. Trenton Falls. (.State Collection.) 



COLUMNS OF CRINOIDEA. 

 Pl. XXIX. Figs. 3 a, b, c. 



Pentagonal columns, and fragments of other columns of which the body has not been 

 seen in the Trenton limestone, are sometimes found in the central and higher portions of 

 that formation. For description and illustration of the one figured above, see Crinoidea of 

 the Hudson-river group. 



Locality. Middleville, in grey crystalline Trenton limestone. 



The specimen fig. 3 c is a fragment of an unknown crinoidal column, which presents the 

 peculiarity of being deeply striated longitudinally, and having distant enlarged plates, 

 which project, with rounded edges, beyond the general circumference. It may perhaps 

 belong to the Poteriocrinus or Scyphocrinus, small fragments only of the columns of 

 these having been seen. 



Position and locality, Middleville, in the lower part of the Trenton limestone. 



