140 TRANSACTIONS OF THE WAGNER FREE 



the original fossil, which will not seem surprising to any one who has had ex- 

 perience in reproducing casts and molds seriatim without recourse to the 

 original. 



This species is beautifully preserved in the Chipola Miocene, though rare, 

 but is more common, but poorly preserved, in the silex-beds. 



Murex trophoniformis Heilprin. 

 M. trophoniformis Heilprin, Trans. Wagner Inst. i. p. 107, pi. 15, fig;. 40, 1887. 



Fossil in the Miocene of the Chipola River and the silex beds of Ballast 

 Point, Tampa Bay, Florida. 



Subgenus Chicoreus Montfort. 

 Murex (Chicoreus) larvicosta Heilprin. 

 M. larvicosta Heilprin, op. cit. p. 106, pi. 15, fig. 37, 1887. 



This species, so far, has been obtained only from the silex-beds. It had but 

 six varices in the specimens I have seen. 



Murex (Chicoreus) crispangula Heilprin. 

 71/. crispangula Heilprin, op. cit. p. 107, pi. 15, fig. 38, 1887. 



Silex-beds of Ballast Point. Only one specimen has been obtained so far, 

 which is evidently related to the preceding species, having the same sculpture 

 and number of varices, though less angular at the shoulder. 



Murex (Chicoreus) brevifrons Lamarck. 

 Murex brevifrons Lam., An. sans Vert., ed. i., vol. vii. p. 161, 1822. 

 M. brevifrons Lam., var. catcitrapa Heilprin, op. cit. p. 68, 1887. 



Pliocene of the Caloosahatchie beds, Florida ; Post-Pliocene of the An- 

 tilles ; living among the Antilles and on the eastern coast of the United 

 States as far north as the Carolinas. 



Murex (Chicoreus) rufus Lamarck. 

 M. rufus Lam., op. cit. p. 162, 1S22. 

 M. sexcostata Emmons, Geol. N. Car., p. 248, fig. io5, 1858. 



Fossil in the Miocene (?) of North Carolina (Emmons); the Pliocene of 

 the Caloosahatchie beds and Alligator Creek, South Florida; the Post-Plio- 

 cene of the Antilles, and living in the existing fauna from off Cape Fear, N. 

 Carolina, to the Florida Keys, and on the Gulf coast of Florida. 



I fancy that the imperfect specimen of M. riifjis described by Emmons, as 

 well as his M. globosiLS (^ ponizim Gmelin), may have been Pliocene or Post- 

 Pliocene' and not Miocene, as he supposed. Small specimens of M. rufus are 

 not uncommon in the Caloosahatchie marls, but the larger ones are rare and 

 usually in bad condition. 



