24 Bulletin i ( 24 ) 



larvata Con. 

 Margijiella larva fa Con., V OSS. Sh. Tert. Form., Sept., 1833, 



p. 33; 2d ed., p. 45, pi. 16, fig. 12. 

 M. ovata Lea, Cont. toGeol., 1833, p. 179, pi. 6, fig. 191. 

 PorcelLma larvata Con., Proc. Ac. Nat. Sci., 1854, p. 31. 

 Volutella larvata Con., Am. Jr. Conch., 1865, p. 25. 



larvata Con. 

 Pyramidella larvata Con., Foss. Tert. Form., Nov., 1833, p. 46. 

 Adeon elevatus I,ea, Cont. to Geol., Dec, 1833, p. 113, pi. 4, 



fig. 98. 

 Obelisais larvatus Con., Amer. Jr. Conch., 1865, p. 28. 



latifrons Con. 

 CrenelLx latifrons Con., Jr. Ac. Nat. Sci., vol. 4, i860, p. 296. 



lesueurii Lea 



Pleiirotoma lesueurii \^Q.2i, Cont. to Geol., Dec. 1833, p. 137, pi. 4, 

 fig- 133- 

 This differs from P. alternaia in having a more p'ominent sub- 

 sutural ridge and in having the sinus in a channel between 

 this ridge and the carina. Alternata has less prominent re- 

 volving lines and the retral sinus is on the carina. 



lltnatula Con. 

 Donax liniatida Con., Foss. Sh. Tert. Form., Nov., 1833, p. 42. 

 Egeria triangiclata Lea, Cont. to Geol., Dec, 1833, p. 51, pi. i, 



fig. 20. 

 Egeria bucklmidii l^ei, idem, p. 52, pi. i, fig. 21. 

 Egeria limat2da Con. 



littiiila Con. 

 Avicida linmla Con., Foss. Sh. Tert. Form., Nov., 1833, p. 39. 

 Avicula daibomensis heo., Cont. to Geol., Dec, 1833 p. 86, pi. 

 3, fig- 65. 



limnlus Con. 

 Fusus linmlus Con., Voss. Sh. T&rt. Form., Nov., 1833, p. 43; 



2d ed. 1835, P- 53, pl- 18, fig. 4. 

 Fususacutiis Lea, Cont. to Geol., Dec, 1833, p. 149, pl. 5, f. 153. 

 Strepsidura limula Coi]. 



littiula Con. 

 Natica limida Con., Foss. Sh. Tert. Form., Nov., 1833, p. 46. 

 A^. gibbosa Lea; an elevated variety of this species. 

 N. cztites Con., (A^. mamma Lea,) is most probablj^ a low or de- 

 form of this species. 



