116 PALEONTOLOGY OF NEW JBKSBY. 



extended along the side of the spne to the second volution above, so as to 

 indicate the existence of a posterior canal. If this is correct and not a 

 result of compression, it would remove it from the genus Anchura and ally 

 it more nearly with Helicaulax Gabb, which has the canal passing along 

 the spire to near its summit. There is, however, a great diversity of opinion 

 as to the range of these genera, and I think that half the number which 

 now exist would better serve the purposes of classification. Stoliczka would 

 apparently place this shell and all its group under Alaria M. & L., but they 

 have no lip-like varices. 



Formation and locality: I find specimens of this species in collections 

 from various localities, judging from their characters, but most of them are 

 marked simply "New Jersey." They are found at Freehold, MuUica Hill, 

 Marlborough, Cream Ridge, and many other places in the Lower Marls, 

 and are common in the Cretaceous in Alabama. 



Anchura pagodaformis, n. sp. 

 Plate XIV, Figs. 15, 16. 



A single cast of a large species, evidently an Anchura, comes from the 

 lowest layers of green sand in Monmouth County without more special 

 locality. It is so marked in its character that I have thought it worth while 

 to designate it by name, in hopes that other and better examples may be 

 discovered before the work on the Marls shall be closed. The cast, without 

 anterior beak and lacking some four or more volutions of the apex, is nearly 

 3 inches in length, and considerably over an inch and a quarter in diameter 

 across the body volution. The volutions are very compactly coiled, indi- 

 cating a rather thin shell, and the lower volutions are rather flattened ver- 

 tically, the last one showing evidence of a depression a little below the 

 shoulder. Above, the coils are more rounded, from a thickening of the 

 shell on the inside. The aperture appears to have been constricted on the 

 back of the expansion, the cast being broken just at the beginning of 

 the widening portion and showing the commencement of the upward 

 expansion of the hp. No surface markings are visible on any part of the 

 shell. The center of the shell is perforated, but not largely so, indicating 

 a slender axis. The species differs from all others noticed, not only in its 



