334- PALEONTOLOGY OF NEW-YORK. 



698. 18. MURCHISONIA? TEREBRALIS (n. sp.). 



Pl. LXXVI. Fig. 4. 



Shell very slender, extremely elongated, very gradually enlarging from the apex ; volutions 

 eleven in the fragment, slightly expanded towards the lower side ; surface markings unknown. 



This specimen is a fragment consisting of eleven volutions ; the apex, with at least three 

 volutions, being broken ofF. The shell is imbedded in the rock, and the surface worn down so 

 much that its markings are obliterated. The slender form of the shell, and great number of 

 volutions, are very remarkable, although not alone sufficient to distinguish this from other 

 species in a succeeding rock (See plate 83). 



Position and locality. In the Coralline limestone at Schoharie. 



{Collection of Jorni Gebhaed junior.) 



699. 10. BUCANIA sp. 



PL. LXXVI. Fig. 5, and 6 a, b. 



Several specimens of this species have been examined, but they are all casts, and so much 

 distorted that it is impossible to characterize them. The large umbilicus denotes that they be- 

 long to this genus, rather than Bellerophon. 



This species evidently attains a large size, as shown in fig. 5, which possesses no character 

 to distinguish it from the small one 6 a, 6. 



Position and locality. In the Coralline limestone at Schoharie. 



{Collection of John Gebhard junior.) 



700. 5. BELLEROPHON AURICULATUS. 



Pl. LXXVI. Fig. 7 a, 6. 



Convolute ; volutions somewhat flattened from the dorsal side ; last volution rapidly en- 

 larging ; aperture expanded, curving outwards and nearly reflexed at the lateral angles. The 

 remains of a carina, with arched striae diverging therefrom, are visible upon the dorsal side. 



The specimen is a cast, preserving slight evidences of the external markings, but still suffi- 

 cient to indicate their character. This species is associated with the preceding ; but even in 

 the usually imperfect condition of both species, they can be distinguished from each other. 



Positiort and locality. In the Coralline limstone at Schoharie. 



{Collection of John Gebhard junior.) 



Several other species of Gasteropoda have been examined, but they are all too imperfect to 

 be characterized. 



