232 SYSTEMATIC PALEOXTOLOGY 



Family VERMETID^. 



Genus VERMETUS Adanson. 



Vermetus graniferus (Say). 

 Plate LV, Figs. 14, 15. 



Serpula (jrauifera Say, 1824, Jour. Acad. Nat. Sci. Phila., vol. iv, 1st ser., p. 154, 



pi. viii, fig. 4. (Reprint, 1896, Bull. Amer. Pal., No. 5.) 

 Serpulorhis granifera Dall, 1892, Trans. Wagner Free Inst. Sci., vol. iii, pt. ii, p. 303. 

 Anguinella virginiana Whitfield, 1894, Mon. xxiv, U. S. Geol. Survey, p. 132, pi. 



xxiv, figs. 1-5. 



Description. — " Covered with longitudinal, contiguous, slightly ele- 

 vated, granulated strise. 



" Shell subcylindric, contorted, inferior side flat ; the whole surface is 

 composed of very numerous, small, contiguous striae, each consisting of a 

 single row of granules ; these series are alternately smaller. 



" Diameter of the larger end three-tenths of the largest specimen 

 two-fifths of an inch. The continuity of the tube within is interrupted 

 by oblique diaphragms. It sometimes approaches the spiral form, and 

 one specimen has three complete volutions of much regularity." Say, 

 1824. 



Length of tube (longest observed fragment), 160 mm.; diameter of 

 same tube, 8 mm.; maximum diameter, 15 mm. 



Occurrence. — St. Mary's Formation. — St, Mary's Eiver. Choptank 

 Formation. Jones Wharf, Governor Run (lower bed), Greensboro. 

 Calvert Formation. Plum Point, Chesapeake Beach, 3 miles west of 

 Centerville. 



Collections. — Maryland Geological Survey, Johns Hopkins University, 

 U. S. Kational Museum. 



Vermetus virginicus (Conrad). 

 Plate LV, Fig. 16. 



Serpiila virginica Conrad, 1839, Fossils of the Medial Tertiary, cover of No. 1, p. 3, 



Reprint, 1893, p. [51 J. 

 Anguinella virginiana Conrad, 1845, Fossils of the Medial Tertiary, p. 77, pi. xliv, 



fig. 4. 

 Anguinella virginiaiia Conrad, 1863, Proc. Acad. Nat. Sci. Phila., vol. xiv, p. 568. 

 Anguinella virginiana Meek, 1864, Miocene Check List, Smith. Misc. Coll. (183), p. 16. 

 Vermetus ? (Anguinella) virginica Dall, 1892, Trans. Wagner Free Inst. Sci., vol. iii, 



pt. ii, p. 306. 

 Not Angui7iella Virginiana Whitfield. 



