296 PALiEONTOLOGY OF NEW-YORK. 



Specimens of this species are mimerous on the worn surfoces of some beds of 

 the upper part of the Tentaculite limestone near its junction with the PenUunerus 

 limestone, and in the latter rock, often associated witli II. antiqua. The species is 

 readily recognized among all others of this group, by its general form. 



Fig. 6. A section of a small individual shown on the worn surface of the rook- 

 Fig. 7. A larger specimen wliioli preserves some remains of the columcllar lip, the upper 

 volutions being entire. 



Geological position and locality. In the tentaculite and pentamerus limestones : 

 Helderberg mountains, Schoharie, Carlisle, Manlius, and other places. 



Lo.Yoiieiiia atteiiuata ( n. s.). 



Platk LIV. Fig. 8 ; and Plate LXVII. Fig. 3. 



Shell fusiform, somewhat rapidly attenuating above the last volution, 

 which is ventricose : aperture imdetermined. Surface unknown. 

 The specimens figured are casts, one preserving four volutions and the other eight. 



Fig. 8. The posterior side of the cast, the aperture being filled with stone. 

 Plate lxvii. Fig. 3. A cast of the interior, preserving eight volutions. 

 Geological position and locality. In the upper part of the shaly limestone, Herki- 

 mer county; and in the upper pentamems limestone, Carlisle, Schoharie county. 



Loxoiieiiia fitclii ( n. s.). 



Plate LIV. Fig. 9, 11 a & 11 b. 



Shell subfusiform, very gradually attenuate : volutions seven or eight 

 ( six preserved in the imperfect specimen). Surface unknown. 



The specimen fig. 9 is a cast, which is flattened so that the volutions, as presented 

 in the figure, give the shell a greater proportional width than the natural form. It is 

 much more gradually attenuate than the preceding species, the last volution is less 

 ventricose, and the entire shell has been considerably longer. 



Fig. 9. Anterior side of a cast which is flattened in that direction. 

 Fig. 11 a. A fragment of the same species from the shaly limestone. 

 Fig. 11 6. A similar fragment of a larger individual. 

 Geological position and locality. In the shaly limestone : Carlisle, Schoharie 

 county; and Helderberg mountains, Albany coimty. 



