TRANSACTIONS OF WAGNER 

 IOOO 



TERTIARY FAUNA OF FLORIDA 



Anatina tellinoides H. C. Lea, Trans. Am. Phil. Soc., 3d Ser., ix., p. 237, pi. 34, fig. 12, 1845. 

 Lavignon tellinoides Orbigny, Prodr. Pal., iii., p. 101, 1852. 



Lavignon tellinoides Tuomey and Holmes, Pleioc. Fos. S. Car., p. 92, pi. 23, fig. I, 1856. 

 Cumingia medialis Conrad, Am. Journ. Conch., ii., p. 106, 1866. 



Miocene of the James River, Virginia, Conrad; Petersburg, Virginia, H. 

 C. Lea ; York River, Virginia, Harris ; of Duplin County, North Carolina, 

 at the Natural Well and Magnolia, Burns ; of South Carolina on the Peedee 

 River, Tuomey. 



This species is very similar to some varieties of the recent C. tellinoides, 

 but differs in general in its larger size, more conspicuous socket for the 

 resilium, less elongation and less prominent surface sculpture. The genus 

 is said to go back to the Cretaceous, but in the American beds the only species 

 older than the C. medialis is a small shell described from the Red Bluff Eocene 

 of Mississippi by Otto Meyer (Proc. Acad. Nat. Sci. Phila. for 1887, p. 53, 

 pi. iii., figs. 16, a-b) under the name of Mikrola mississippiensis. An examina- 

 tion of the type specimens of this species led to the discovery that, contrary 

 to Dr. Meyer's diagnosis, there are well developed lateral teeth in the right 

 valve on each side of the fossette ; and the appearance of the shell confirmed 

 the opinion that it is only a very young specimen of a species of Cumingia 

 which would therefore carry the specific name of mississippiensis. 



Cumingia tellinoides Conrad. 

 Mactra tellinoides Conrad, Journ. Acad. Nat. Sci. Phila., vi., p. 258, pi. xi., figs. 2-3, 1831 ; 



Am. Mar. Conch., pi. 14, fig. 2, 1831 ; not of Conrad, 1838, ex Miocene. 

 Cumingia borealis Conrad, Am. Journ. Conch., ii., p. 76, 1866. 

 Cumingia tellinoides Holmes, Post-Pi. Fos. S. Car., p. S3, pi- 8, fig. 12, 1859; Verrill, 



Am. Journ. Sci., 3d Ser., x., p. 371, 1875 ; Dall, Bull. U. S. Nat. Mus., No. 37, p. 62, 



pi. 56, fig. 14, 1889. 



Pleistocene of Sankoty Head, Massachusetts, Verrill, and of Simmons 

 Bluff, South Carolina, Holmes and Burns. Recent from Prince Edward 

 Island south to Florida and, if the following form be regarded as conspecific, 

 to Northern Brazil. 



Cumingia coarctata Sowerby. 



Cumingia coarctata Sby., P. Z. S., 1833, p. 34 (not of Cpr.). 

 Lavignon antillarum Orbigny, Moll. Cubana, ii., p. 236, pi. 25, figs. 36-38, 1846. 

 Lavignon Petitiana Orbigny, op. cit., p. 236, pi. 25, figs. 33-35. 

 Cumingia antillarum A. Adams, P. Z. S., 1850, p. 24. 

 Cumingia fragilis A. Adams, P. Z. S., 1850, p. 25, pi. 8, fig. 7. 



