226 SYSTEMATIC PALEONTOLOGY 



Family DOLIID/E. 



Genus PYRULA Lamarck. 



Pyrula harrisi n. sp. 

 Plate LV, Fig. 3. 



Pyrula n. sp. Harris, 1893, Amer. Jour. Sci., ser. iii, vol. xlv, p. 25. 



Description. — Shell globose, thin, five-whorled; spire low, whorls 

 slightly convex, suture not deep; body whorl large, inflated; surface 

 covered with raised revolving ribs with broader interspaces and with some- 

 times one or more narrow intermediate ribs ; revolving ribs exceeding 65 

 on the body whorl, absent on a narrow band below the suture; lines of 

 growth fine, closely set, occasionally rugose ; mouth large, widest near the 

 center, somewhat callous at the upper end ; canal broad, short. 



Fragments of this species are very abundant but it is seldom that good 

 specimens can be found. 



Length, 33 mm. ; diameter, 25 mm. 



Occurrence. — Calvert Formation. Plum Point. 



Collections. — Maryland Geological Survey, Johns Hopkins University, 

 IT. S. National Museum, Cornell University. 



Family CASSID/E. 



Genus CASSIS Lamarck. 



Cassis c^elata Conrad. 

 Plate LV, Fig. 4. 



ccelata Conrad, 1830, Jour. Acad. Nat. Sci. Phila., voL vi, 1st ser., p. 311. 

 (Name only.) 



its ccelata Conrad, 1830, Jour. Acad. Nat. Sci. Phila., vol. vi, 1st ser., p. 318, 

 pi. ix, fig. 14. 



ccelata Conrad, 1843, Proc. Nat. Inst., Bull, ii, p. 187. 

 Semicassis ccelata Conrad, 1863, Proc. Acad. Nat. Sci. Phila., vol. xiv, p. 564. 

 Semicassis ccelata Meek, 1864, Miocene Check List, Smith. Misc. Coll. (183), p. 19. 



Description. — " Shell with transverse tuberculated ribs, and interven- 

 ing striae; whorls of the spire longitudinally ribbed; right lip toothed 

 within; columella granulate and wrinkled. 



" The transverse striae of the grooves between the ribs are very distinct, 

 and between each of the tubercles a longitudinal raised line crosses the 



