cephalopoba of a:HE cbetaoeous marls. 279 



existed witliin the limits of the State, as a single fragment of a large sized 

 individual comes to me among the collections made by Prof Reiley from 

 Holmdel, and is from the Lower Marls. The fragment is less than 2 inches 

 in length, but is about 2 4 inches in its greatest transverse diameter, by 

 nearly 1^ inches in its shorter diameter. The fragment is apparently 

 from within the septate portion of the shell, as it bears markings of the 

 septa at each extremity, but in a condition altogether too imperfect for 

 description. However, there is on each side of it a single one of the 

 large inflated node-like undulations which characterize the species, through 

 the highest part of which the shorter diameter of the specimen is nearly 

 one-half greater than at a point below between this and the next node 

 below. There have probably been other septa within the length of the 

 fragment, but they are entirely invisible in detail from the condition of 

 preservation, although one of them appears to be obscurely indicated by 

 an irregular thickened line near the middle of the length, the undula- 

 tions on the side of the shell extending entirely across its width and 

 modifying one of the edges. In crossing the side of the specimen it forms 

 a deep downward curve in the middle, with corresponding deep but still 

 broader depressions above and below it. The transverse section of the tube 

 appears to have been nearly or quite symmetrically oval. 



It is possible I may be mistaken in the specific relations of this frag- 

 ment; if it is not B. asper it must be an undescribed species, as none other 

 described possesses the features which this one presents. 



Collection at Rutgers College. 



