706 CRETACEOUS PALEONTOLOGY. 



1905. Siliquaria pauper at a Johns., Proc. Acad. Nat. Sci. Phil. 

 (1905), p. 21. 



Description. "A few specimens only of casts of tubes refer- 

 able to this genus have come under my notice. Two of them 

 are coiled and retain the younger parts of the specimens, while 

 most of them are only fragments representing medium sized parts 

 of the tubes, or parts from the large irregularly coiled portions. 

 The tube is very gradually tapering, and either compactly or 

 loosely coiled in the upper part, but all show their relations to 

 the genus Siliquofria, by the narrow ridge left along the upper 

 side of the tube by the material which has filled the slit. There 

 is no distinctive feature represented on the specimens by which 

 they can be distinguished from casts of other species of the genus ; 

 and, as no evidence of the surface characters are preserved, no 

 data for comparison is left." (Whitfield.) 



Remarks. This species has not been met with in the recent 

 collections of the Survey, but the lithologic characters of the 

 type indicate that their proper horizon is the Navesink marl. 



Formation and locality. Navesink marl, New Jersey (Whit- 

 field). 



Geographic distribution. New Jersey. 



Genus LAXISPIRA Gabb. 



Laxispira lumbricalis Gabb. 



Plate LXXXI, Figs. 1-2. 



1876. Laxispira. lumbricalis Gabb, Proc. Acad. Nat. Sci. Phil. 



(1876), p. 301. 

 1883. Laxispira lumbricalis Tryon, Struct, and System. 



Conch., vol. 2, p. 309, pi. 79, fig. 14. 

 1892. Laxispira lumbricalis Whitf., Pal. N. J., vol. 2 (Monog. 



U. S. G. S., vol. 1 8), p. 148, pi. 1 8, fig. 25. 

 1905. Laxispira lumbricalis Johns., Proc. Acad. Nat. Sci. Phil. 



(1905), p. 22. 



