MOLLUSCA. 621 



Remarks. — "This species differs from L. metastriata in being 

 proportionally longer, in the abrupt contraction of the posterior 

 end, in its O'vate instead of oval form, greater convexity, and in 

 being marked by radiating striae throughout instead of having 

 the central part of the valve nearly or quite destitute of this 

 marking." (Whitfield.) 



This species has not been met with in any of the recent col- 

 lections of the Survey, and Whitfield's type specimen seems to 

 have been lost or destroyed. It is altogether probable that the 

 specimen was^ an abnormal or perhaps distorted individual of L. 

 -metastriata. 



Formation and locality. — Navesink marl ?, Holmdel (Whit- 

 field). 



Geographic distribution.— New Jersey. 



Genus Tei<WNImeSia Conrad. 



Tellinimera eborea Conrad. 



Plate LXX., Figs. 14-23. 



i860. Tellina {Tellinimera) eborea Con., Jour. Acad. Nat. Sci. 



■ Phil, 2nd ser., vol. 4, p. 278, pi. 46, fig. 14. 

 1861. Tellina eborea Gabb, Synop. Moll. Cret. Form., p. 229 



(173)- 

 1864. Tellina (Tellinimera) eborea Meek, Check List Inv. 



Foss. N. A., Cret. and Jur., p. 14. 

 1868. Tellinomera eborea Con., Cook's Geol. N. J., p. 727. 

 1870. Tellimera eborea Con., Am. Jour. Conch., vol. 6, p. 73. 

 1884. Tellinimera eborea Tryon, Struct, and Syst. Conch., vol. 



3, p. 169, pi. 112, fig. 100. 

 1886. Tellimera eborea Whitf., Pal. N. J., vol. i (Monog. U. 



S. G. S., vol. 9), p. 164, pi. 23, figs. 12-13. 

 1905. Tellinimera eborea Johns., Proc. Acad. Nat. Sci. Phil. 



(1905), p. 16. 



Description. — The dimensio-ns of an average specimen are: 

 length, 13.5 mm.; height, 9 mm.; convexity, 2 mm. Shell tri- 



