MARYLAND GEOLOGICAL SURVEY 145 



straight, simple ; pillar short, simple, twisted ; the canal moderately wide ; 

 base rounded, without a carina. Longitude, 18; maximum diameter, 

 4 mm.'' Dall, 1895. 



This species does not occur at Shiloh, N. J., as Dr. Dall believed. 

 Whitfield recorded his New Jersey specimens as from the Cape May 

 well, where they are associated with other St. Mary's species. 



Length, 21 mm.; diameter, 5 mm. 



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

 Langley's Bluff, Choptank Formation. Jones Wliarf. 



Collections. — Maryland Geological Survey, Johns Flopkins University, 

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

 Wagner Free Institute of Science, Cornell LTniversity. 



Terebra (Hastula) patuxentia n. sp. 

 Plate XL, Fig. 14. 



Description. — Shape like inornata, except that the sides of the whorls 

 are flat. Entire shell covered with fine, close, distinct spiral lines. On 

 the younger whorls are many narrow ribs running straight from suture 

 to suture. On the lower whorls these become obsolete and irregular, re- 

 maining most distinct immediately below the suture. 



Length (restored), 13 mm.; diameter, 3 mm. 



Occurrence. — Choptank Formation. Jones Wharf. 



Collection. — Maryland Geological Survey. 



Family CONID/E. 



Genus CONUS Linne. 



CoNUS diluvianus Green. 

 Plate XL, Figs. 15, 16, 17. 



Conus Deluvianus Green, 1830, Trans. Albany Institute, voL i, p. 124. 



Conus diluvianus Conrad, 1880, Jour. Acad. Nat. Sci. Phila., vol. vi, Ist ser., p. 'ill. 



Conus diluvianus Conrad, 1843, Proc. Nat. Inst., Bull, ii, p. 187. 



Not Conus diluvianus Tuomey and Holmes or Emmons. 



Description. — " Shell conical, and somewhat elongated ; spire elevated 

 and rather acute; whorls slightly grooved and concave; base of the 

 columella slightly twisted in-w ards ; length three inches and less than half 

 10 



