144: SYSTEMATIC PALEONTOLOGY 



Terebra (Hastula) simplex var. sublirata Conrad. 

 Plate XL, Fig. 11. 



Terebra sublirata Conrad, 1863, Proc. Acad. Nat. Sci. Phila., vol. xiv, p. 565. 



(Name only.) 

 Terebra (Acus) sublirata Meek, 1864, Miocene Check List, Smith. Misc. Coll. (183), 



p. 18. 



Description. — General form like simplex; suture more distinct; 

 whorls somewhat turreted; faint longitudinal lirations extend from 

 suture to suture ; an impressed subsutural line sometimes appears on the 

 body whorl at about one-fourth the distance to the base. 



Length, 38 mm. ; diameter, 10 mm. 



Occurrence. — St. Mary's Formation. St. Mary's River, Cove Point. 



Collections. — Maryland Geological Survey, Johns Hopkins University, 

 U. S. National Museum, Philadelphia Academy of Natural Sciences, 

 Wagner Free Institute of Science, Cornell University. 



Terebra (Hastula) inornata Wliitfield. 

 Plate XL, Figs. 13, 13. 



Terebra inornata Whitfield, 1894, Mon. xxiv, U. S. Geol. Survey, p. 114, pi. xx, 



figs. 11-13. 

 Terebra {Hastula) inornata Dall, 1895, Proc. U. S. Nat. Museum, vol. xviii [No. 



1035], p. 35. 



Description. — " Shell below medium size and very slender, consisting 

 of twelve or more volutions ; spire attenuated ; volutions sloping abruptly 

 for about one-third of their exposed surface below the suture, below 

 which point their sides are vertical, parallel, and destitute of ornamenta- 

 tion other than fine lines of growth, except on a few of the apical volu- 

 tions ; where, when perfect, there are faint vertical ridges ; aperture 

 narrow, elongate, forming about three-fiftlis of the height of the body 

 volution at its margin; outer lip thin and sharp; columella twisted, 

 slightly excavated on its face, and marked by a thickened spiral rib near 

 the base; channel slight." Whitfield, 189-1. 



" Shell small, slender, nearly smooth, without any sutural band or 

 spiral sculpture, and with about a dozen whorls ; early whorls with a few 

 obsolete transverse riblets, other whorls with no sculpture except the 

 somewhat irregular incremental lines ; whorls rather flat, suture distinct, 

 closely oppressed; aperture longer than wide; outer lip thin; nearly 



