38 



'' genus. I liave, therefore, referred tliis and several otlier 



species to Pi/rifusus. Should it be found, however, when 

 better specimens can be examined, tliat the type of that genus 

 really has a broad, flattened columella, and consequently that 

 our shells belong to a distinct genus, I would propose for this 

 group the name NeptuneUa, with Fusus Newbtrrji, Meek & Hay- 

 den, as its type. It would also include F. inlertextus and F. 

 suhturritus, M. & H. ; Afer hellulirata, Conrad ; and F. muUicn- 

 ensis, Gabb. These forms cannot be referred to Afer, Conrad, 

 because that group was founded upon the recent Fusus afer, of 

 Lamarck, a very distinct type. 



It is not probable that any of the species retained under the 

 name Fusus, in the foregoing List, belong to that genus as 

 properly restricted. It is, however, probably better to leave 

 them there, until Conchologists have agreed in regard to what 

 particular type of that heterogeneous group the name Fusus is 

 to be applied. 



732 = Fusus subturritus, Meek & Haydex, ib. 



734:^ Fusus? tenuilineatus, Hall & Meek, Mem. Am, Acad. Arts and 

 Sci. V, new ser. 394, iii, 9. 



740 = Pleurotomaria mullicaensis, Gabb, Proc. Acad. Nat. Sci. March 

 l^fJO, p. 95. Should be Pyrifusus milicaensis, (Gabb) Meek. 



748 = Pyrula Bairdi, Meek & Hayden, Proc. Acad. Nat. Sci. March 

 1S5(J, G(J. 



751 = Fusus ? dakotensis, Meek & Hayden, ib. 65. 



770 = Hamites Leal, Tkoost, Fifth Rept. Geol. Surv. Tennessee, 1840, 53. 



773 = Hamites Verneuilii, Troost, ib. 52. 



858 = Turrilites (sp. iued.), Owex, Second Report Geol. Recon. Arkansas, 



pi. viii, 2. 



859 = Helicoceras tortum, Meek & Haydex, Proc. Acad. Nat. Sci. 



Phila. March 1858, 54. 



860 = Helicoceras ? angulatum, Meek & Hay^den, ib. May 186 , 176. 



861 = Turrilites cheyeunensis, Meek & Hayden, ib. Nov. 1856, 2S0. 

 874 = Nautilus orbiculatus, Tiomey, ib. 1855, 167. 



This should probably be written Aganides orbiculatus, since 

 Montfort's name Aganides (1808) was founded apparently upon 

 a species of this group. 



876 = Belemnites paxillosa, Lamk. 1801, Syst. 104. 



883 = Vermetus rotula, Morton, Synop. Org. Rem. 1834, 81, i, 14. 



