492 CRETACEOUS PALEONTOLOGY. 



Lima lorillardensis b. sp. 

 Plate LIV., Pigs. 5-6. 



Description. — The dimensions of the type specimen are : 

 height, 27 mm. ; width, 22 mm. ; thickness, about 16.5 mm. Shell 

 oblique, subovate in outline; valves rather strongly convex, 

 marked by 30 to 35 strong ribs, tho'se on- the central portion of 

 the shell being much stronger than those towards the lateral 

 margins, these larger ribs are subcarinate on top, with a some- 

 what conspicuous shoulder about half-way down each slope, the 

 interspaces rounded in the bottom and somewhat broader than 

 the ribs, the lateral ribs are much narrower, lower and lack the 

 lateral shoulders. Entire surface marked by fine, regular con- 

 centric lines. 



Remarks-i—^he type and only specimen of this species seen 

 is a somewhat crushed and distorted internal cast whose exact 

 form and proportions cannot be determined, and a portion of 

 the impression of the exterior which preserves the surface mark- 

 ings very perfectly. The shell apparently has much the same 

 size and proportions as L. -mhitii.eldi, but its distinguishing char- 

 acters are to be found in the surface markings. The species 

 somewhat resembles L. squarrosa Gabb, from Alabama, but 

 that species has broader, higher and more square ribs, which 

 are not carinate, and less strongly marked concentric lines. 



Formation and locality. — Woodbury clay, Lorillard (102). 



Geographic distribution. — New Jersey. 



Lima reticulata Lyell and Forbes. 

 Plate LIV., Figs. 3-4. 



1845. Lima reticulata L. & F., Quart. Jour. Geol. Soc. Lond., 



vol. I, p. 62, with two text figures. 

 1 861. Ctenoides reticulata Gabb, Synop. Moll. Cret. Form., p. 



171 (114). 

 1864. Lima reticulata Meek, Check List Inv. Foss. N. A., 



Cret and Jur., p. 7. 

 1868. Rad'ida reticulata Con., Cook's Geol. N. J., p. 725. 



