LOWER HELDERBERG ROCKS. 
133 
Geological position and locality. In the shaly layers of the Pentamerus limestone : 
Jerusalem hill, Litchfield, Herkimer county. 
®EWS ©ICTYOCRINUS. 
In a plate intended to accompany his Report of 1841, Mr. Conrad has 
figured and designated a peculiar fossil body by the name Dictuocrinites. 
The body is turbinate, with an appearance of a cavity at the base for 
the insertion of a column. The surface is marked by curving impressed 
lines leaving intermediate rhombic spaces, which are occupied by sub- 
imbricating scales. 
The Receptaculites rhombifer of Rcf.mer ( Beitrsege zur Geologischen Kentniss des 
Nordwestlichen Harzgebirges, p. 30 : Spliceronites rhombifer ? pi. iv, f. 21) is evi¬ 
dently a similar body, and likewise one of doubtful position in the system as far as 
its structure is known. 
Dictyociinus squamifer (n. s.). 
Plate YII A. Fig. 11 - 13. 
Body turbinate. Base slightly truncated, and deeply impressed in the 
centre as if for the insertion of a pedicle. Surface entirely covered by 
rhombiform subimbricating scales; those near the base being longer 
than wide, while the upper ones are wider than long. 
The substance of the body is crystalline calcareous spar, solid at the 
base, but having a depression above as shown at the broken margins. 
The relations of this body with the Crinoidese or Cystidese are at least doubtful, 
but the specimen is not sufficient to make any satisfactory determination. The 
character of the scales, if there were no other solid parts, would indicate a flexible 
or elastic pouch; and it is scarcely probable that the pedicle was solid, like the 
columns of crinoids. 
Fig. 11. The body, natural size. 
Fig. 12. The base, showing cavity for the insertion of a pedicle. 
Fig. 13. Enlargement of surface, showing form and arrangement of scales. 
Geological position and locality. In the shaly limestone of the Lower Helderberg 
group, Schoharie. 
