I 1 2 TRANSACTIONS OF THE WAGNER FREE 



enough to be called a channel, and varies remarkably in the elevation of the 

 spire, which is more accurately scalar when the spire is depressed; more ob- 

 lique, with the shoulder somewhat excavated and appressed, when the spire is 

 elevated. This species also illustrates the want of equilibrium so clearly 

 shown by the variations of F. nodulalum. 



Fulgiir pyrum Dillwyn. 



Bulla pyritm Dillwyn, Des. Cat. Rec. Sh. i. p. 485, 1817. 



Pyvula spirata Lamarck, An. s. Vert. vii. p. 142, 1822. 



Fulgur pyruloides S?iy ,]onrn. Acad. Nat. Sci. Phila. ii. p. 237. 



Busycon plagosmn Conrad, Proc. Acad. Nat. Sci. Phila. 1862, p. 583. 



Busycon elegans Conrad, loc. cit. p. 583, 1862. 



Sycoiypus pyrifonnis Conr., Am. Journ. Conch, iii. p. 265, pi. 20, fig. i, 1S67. 



Ftclgur pyriformis Heilprin, Trans. Wagner Inst. i. p. 74. 



Upper Miocene to recent fauna. 



Fulgur pyrum var. incile Conrad. 



Fulgur incile Conrad, Am. Journ. Sci. xxiii. p. 333, 1833. 



Busycon Conradii Tuomey & Holmes, Pleioc. Foss. S. C, p. 147, pi. 29, fig. 4, 1856. 



Sycotypus incilis Gill, Am. Journ. Conch, iii. p. 149, 1867. 



Busycon alveatum Conrad, Proc. Acad. Nat. Sci. 1862, p. 583, Am. Journ. Conch, ii. p. 



68, pi. 3, fig. 7, 1866. 

 Sycotypus alveatus Gill, Am. Journ. Conch, iii. p. 149, 1867. 

 Busyco7i canaliculatum Tuomey & Holmes, op. cit. pi. 29, fig. 2, p. 146, ex parte (not of 



Lamarck), 1856. 

 Busycon canalifertcm Conrad, Proc. Acad. Nat. Sci. 1862, p. 260. 

 Busycon carolinense Conrad, op. cit. p. 584 ; not p. 560. 

 Sycotypus canaliferus Gill, op. cit. p. 149, 1867. 



Miocene of Maryland, Virginia, N. and S. Carolina, Florida. 



Fulgur pyrum var. excavatum Conrad. 



Fulgur excavatus Conrad, Am. Journ. Sci. 2, xxxix. p. 387, 1S40. 



Busycon excavatus Conr., Foss. Tert. Form. U. S., p. 82, pi. 45, fig. 12, 1845 ; Proc. Acad. 



Nat. Sci. Phil. vii. p. 30, 1854. 

 Cassidulus caroline?isis Tuomey & Holmes, Pleioc. Foss. S. C, p. 147, pi. 30, fig. i, 1856. 

 Busycon excavatum Conrad, Proc. Acad. Nat. Sci. Phila. 1862, p. 560. 

 Busycon carolinense Conrad, op. cit. p. 560 (not p. 584), 1862. 

 Sycotypus excaxmtus Gill, Am. Journ. Conch, iii. p. 150, 1867. Conrad, ibid. p. 267, pi. 23, 



fig. 6. 

 ? Sycotypus elongatus Gill, loc. cit. p. 150, fig., 1867. 



Miocene of Maryland, Virginia, North Carolina, and Pliocene of Florida 

 and South Carolina. 



