1879.] NATURAL SCIENCES OF PHILADELPHIA. 223 



figure of Actseon simulatus {Bulla simulata, Brander) leaves no 

 doubt that the two species are identical. Nor does a comparison 

 of actual specimens, from Alabama and Barton, England, show- 

 any varying characters. 

 Fusus (Bulbifusus) inauratus, Con. Foss. Shells of Tert., p. 29. 



This species is more closely allied to F. bulbiformis, Lara., than 

 to F. ficulneus, Lam., to which last it is doubtfully referred by 

 Bronn (p. 512). It differs from the former, however, in having 

 the canal more produced, in the whorls being strongly subangulate 

 above, and in the superior ones being crenulated on their basal 

 margins. 



Pyrula penita, Con. Foss. Shells of Tert., p 32. 



P. tricarinata, Con. 



P. cancellata, Lea. 



P. elegantissima, Lea. 

 I am disposed to consider the above as identical with Pyrula 

 nexilis, Lam. (and var. P. tricarinata, Lara.), which is a most 

 variable fossil. Both American and European forms appear in 

 the most diverse stages of convexity and angulation. Conrad, 

 although he subsequently sepai-ated the transatlantic forms 

 into two distinct species, states (Foss. Shells of Tert., 2d ed., p. 

 39), "that the variety is not distinct I am assured by comparison 

 of many specimens." I ara also inclined to unite with the above 

 the P. (Fusus) Mississippiensis, Con. 



Oliva bombylis, Con. Foss. Shells of Tert., 2d ed., p. 42. 

 (0. constricta, Lea.) 



Differs from the 0. mitreola, Lam., in having the plications at 

 base less numerous and somewhat less regular, and in wanting the 

 upper of the two impressed revolving lines on the body whorl. 

 In the absence of the line it agrees more closely with 0. nitidula, 

 which was separated by Deshayes from the 0. mitreola as a dis- 

 tinct species. The 0. Brocchii, Bronn (Voluta ispidula, L. var. 

 Brocchi u Conch. Foss. Subapenn.," ii., p. 315, pi. iii., fig. 16), which 

 is as well a Miocene, and perhaps even living species (Bronn, iii., 

 p. 481), appears to be very clearly related to our species. 

 Cancellaria tortiplica, Con. Am. Journ. of Conchol., vol. i., p. 211. 



On an examination of specimens of this species and C evalsa, 

 Brander (from Barton, England) I find the two to be most inti- 

 mately allied to each other, the main difference being that the C. 



