182 PALiONTOLOOy OF NEW-YORK. 



Genus SU B U L IT E S (Conrad). 



Character. " Subulate ; volutions wide, with a very oblique suture ; aperture approaching 



that of Terebra." 



** The exact form of the aperture is unknown, the base being imperfect." 



The above description of this genus is copied from Mr. Conrad's manuscript notes. The 



specimen figured ( PI. XXXIX. fig. 5 a ) , is the original one on which the genus has been 



founded. 



237. 1. SUBULITES ELONGATA. 



Pu XXXIX. Figs. 5 a, b, c. 

 SubnlUet eUmgata, Conrad in MS. Emmons, Geol. Report, 1842, pag. 392, fig. 3. 



Elongated, subfusiform or subulate ; spire rapidly ascending to an acute point ; volutions 

 six or more, flattened ; suture banded ; aperture longitudinally extended, narrow, contracted 

 posteriorly ; surface smooth 1 



This remarkable species is easily distinguished by its elongated fusiform shape, and 

 flattened volutions which are very oblique. The last volution is extremely elongated, con- 

 tracting gradually below the centre, and terminating in an acute point. The aperture is 

 narrow posteriorly, gradually enlarging to the centre, and contracting to the anterior 

 extremity. 



In its usual condition, as casts of the interior, the banded suture is not observed ; but in 

 a single specimen from Middleville, and another from Mineral Point ( Wisconsin ) , the 

 shell is partially preserved, and the suture distinctly banded. In both these specimens there 

 are no visible surface markings, but these may have been obliterated by maceration. 



Fig. 5 o. Imperfect cast of a large specimen, showing a part of the aperture. 



Fig. 5 6. A specimen preserving a portion of the shell, and showing the great length of the last volution 



and aperture. 

 Fig. 5 e. A fragment preserving the shell, and showing more distinctly the banded suture. 



Position and locality. This species is not unfrequent in the higher crystalline portions of 

 the limestone at Watertown. It is extremely rare in other localities, and I have seen but 

 two specimens from Middleville and one from Wisconsin, showing that it heis a wide 

 geographical range. (State Collection, from Dr. Crawe.) 



