43 



tuse; columella 4-plated; labrum minutely crenulated within. 

 Syn. M. FUSOIDES, Lea, Con. p. 169, pi. 6, /. 176. 

 Locality. Claiborno, Alab. 



Closely allied to M. pumila, Sowerby, 



* 



MITRA PACTILIS. Tab. 16, fig. 21. 



Subfusiform ; spire much elevated ; superior half of the whorls 

 plain and concave above, inferiorly convex and nodulous ; suture 

 profound ; apex pappillated ; columella 4-plaited. 



Locality. Claiborne, Alab. 



Although the pappillated apex of this shell is at variance with 

 the Mitrce, as characterized by Lamarck, yet its other characters 

 are decidedly those of the genus. 



VOLUTA PRISCA. Tab. 16, fig. 9. 



Obovate, ventricose, thin ; spire depressed ; apex obtuse ; whorls 

 plicated at the suture ; base profoundly striated ; columella with 4 

 rather oblique subequal compressed folds ; aperture effuse. 



Syn. VOLUTA COOPERII, Lea, Con. p. 175, pi. 6, / 186. 



Locality. Claiborne, Alab. 



The coloured markings still remain on some specimens and ex- 

 hibit revolving series of dark quadrangular spots. I described 

 this shell as a Turbinella, in No. 4, first edit, but the base is not 

 channelled and is slightly emarginate. 



MITRA SOLARIS. Tab. 16, fig. 11. 



Subfusiform, with fine close spiral lines ; superior portion of the 

 whorls slightly concave, inferior convex ; spire elevated ; apex ob- 

 tuse ; columella with 4 thick plaits ; base slightly reflected and 

 produced ; subemarginate. 



Syn. MITRA HUMBOLDTII, M. FLEMING n, VOLUTA PARKINSONI, 

 Lea, Con. pi. 6, 177, 178, 184. 



A common species. No. 3, first' edition, p. 34. 



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