444 TRANSACTIONS OF THE WAGNER FREE 



character in this group ; or whether, as in Cyprcea, Marginella, etc., dwarfs 

 occur in the midst of a large number of normally uniform specimens. 



In the Eocene one of the earliest and most characteristic of our species is C. 

 turgidusM.eye.r,hom\.\\e Prairie Creek beds and Matthews' Landing, Alabama. 

 C. coarctatus Lam. is referred to in the early literature, but is a European 

 species not known to exist in our Tertiaries. Gabb named a species from the 

 Eocene of Wheelock, Texas, j?<(56-(3fl;'(:/a/z« [Ditnipa '' subcoarcuata" by a typo- 

 graphical error in the original) which, as nearly as I can judge, is the same as 

 that subsequently named abruptus by Meyer and Aldrich. The latter is known 

 from Newton, Wahtubbee, Claiborne, Wood's Bluff and Meridian, Miss. It is 

 notable for having the smaller end lightly longitudinally striated in most speci- 

 mens. 



I have an undescribed new species from the Eocene of Lee County, 

 Texas ; C. compressus Meyer, from the Jacksonian, is merely a list-name, not 

 having, as far as I have been able to discover, ever been described or figured. 

 C. neivtonejisis Meyer and Aldrich was described from the Eocene of Newton, 

 and is probably the same as C. jacksoiiensis Meyer of later date. C. corpn- 

 lentiis and qiiadriturritus Meyer are from the Red Bluff beds, and, with C. 

 juvenis and depressus of the same author, from the Jacksonian and Claiborne 

 sands, respectively, appear to be good species. C. tiirritiis Lea, from Clai- 

 borne, described from an immature specimen, does not seem to be the same as 

 any of the other Claiborne shells, while C. vicksburgensis Meyer does not 

 seem to have been found in the Older Eocene, 



In the Older Miocene three species are known, one of which is represented 

 only by immature specimens. The Chesapeake Miocene of Alum Bluff offers 

 two species, neither of which is identical with the two known from Maryland 

 and Virginia beds of the same age. The Pliocene, so far, affords but a single 

 species, which, curiously enough, seems to be the only one of our fossil species 

 which can be strictly identified with any of the recent forms of our coast. 



Cadulus ne'wtonensis Meyer and Aldrich. 



C. newtonensis M. and A., Cin. Journ. Nat. Hist. ix. p. 41, pi. ii. fig. 3, a, b, 1886. 

 C. jacksonensis Meyer, Bull. Ala. Geol. Survey, p. 65, pi. iii. fig. 8, a, b, i885. 



Eocene of Newton and Jackson, Miss., Meyer and Aldrich ; Older Mio- 

 cene of Chipola River, Calhoun Co., Florida, Burns ; and Chesapeake Miocene 

 of Jones's Wharf, Patuxent River, Maryland, Harris. 



The points between the sulci seem particularly liable to fracture, and very 

 few of the specimens preserve them, the majority appearing to have a plain, 

 circular posterior orifice. 



Cadulus vicksburgensis Meyer. 

 C. vicksburgensis Meyer, Bull. Ala. Geol. Survey, p. 65, fig. 6, 6 a, 1886. 



Newer Eocene of Vicksburg, Miss., Meyer ; Older Miocene of the Chip- 



