CEPHALOPODA OF THE CRELACKOUS MARLS. 283 
eroove; apex obtuse, obscurely stellated; color yellowish white, opaque; 
substance, radiated carbonate of lime.” 
Dr. Morton gives as the length of his specimen 2 inches, with a breadth 
of one-sixth of an inch. 
There is much doubt as to the true nature of the specimen from which 
Dr. Morton drew the above description, but as the specimen itself is lost 
no very satisfactory determination can be arrived at. The specimens to 
which Dr. Morton refers as “the numerous individuals in the collection of 
the Academy” are mostly before me, and there would seem to be but little 
doubt of their being stems of an Eucrinite, although they do not have the 
characteristic fracture of those bodies, nor yet appear to be made up of 
easily separated rings, or to have the central perforation. The surface, as 
Dr. Morton says, is longitudinally striated, and when well preserved has a 
smooth glistening appearance under a hand glass, as if it had been polished, 
but when weathered shows obscure transverse lines as if there were trans- 
verse plates. The freshly broken end has a pearly radiating structure, en- 
tirely different from the usual divisional planes of crinoid stems, which fact 
offers an additional objection to their encrinal nature. The fragments have 
a more or less general quadrangular structure, but when closely examined 
all present an indistinct or obscurely pantangular feature. Dr. Morton 
states, in his observations, that his original specimen preserved the rounded 
lower extremity, but that none of the other specimens did, and those before 
me are all squarely truncate at each end. It is possible they may be the 
remains of some aleyonarian body as yet unknown. They are all from 
the Middle Marl Beds, and probably all from Timber Creek, New Jersey, 
the locality from which Dr. Morton cites his example. 
