184 SYSTEMATIC PALEONTOLOGY 



In the Pleistocene it is found at several places from Massachusetts to 

 South Carolina. In the Eecent it is found from Cape Cod to the Florida 

 Keys. 



Length, 26 mm. ; width, 12 mm. 



Occurrence. — Talbot Formation. Wailes Bluff near Cornfield Har- 

 bor, St. Mary's County; Federalsburg, Caroline County. 



Collections. — Maryland Geological Survey, Johns Hopkins University, 

 and U. S. National Museum. 



Genus UROSALPINX Stimpson. 



Urosalpinx cinereus (Say). 



Plate XLIX, Figs. 9, 10. 



Fusus cinereus Say, 1822, Jour. Acad. Nat. Sci. Phila., vol. ii, 1st ser., p. 



236. 

 Fusus cinereus Holmes, 1859, Post-Pi. Foss. S. C, p. 68, pi. xi, fig. 5. 

 Urosalpinx cinereus Dall, 1889, Bull. U. S. Nat. Mus., No. 37, p. 120, pi. 1, 

 fig. 6. 



Urosalpinx cinereus Dall, 1890, Trans. Wagner Free Inst. Sci., vol. iii, pt. 1, 



p. 148. 



Description. — " Shell with a cinereous epidermis, reddish-brown be- 

 neath; volutions cancellate, the transverse costa eleven, robust; revolving 

 lines filiform, irregularly alternately smaller, crenating the edge of the 

 exterior lip, which is acute, and alternating with the raised lines of the 

 fauces; fauces tinged with chocolate colour; beak short, obtuse, not rec- 

 tilinear; labrum not incrassated." Sa}'-, 1822. 



A form not readily distinguishable from U. cinereus is found in the Main- 

 land Miocene and has been doubtfully referred to that species by Martin. 

 Dall is inclined to believe that these Miocene forms belong to U. tros- 

 sulus Conrad. Many of the specimens differ somewhat from the typical 

 U. cinereus of the Pleistocene and Eecent, although others apparently 

 grade into that species so that a consistent separation is impossible. 



Typical forms appear in the Pliocene of the Carolinas and in the Pleis- 

 tocene it is found at numerous points from Massachusetts to South Caro- 

 lina. In the Recent it ranges from Nova Scotia to Florida. 



Length, 25 mm.; width, 12 mm. 



