300 TRANSACTIONS OF THE WAGNER FREE 



Cseoum crebricinctum Carpenter. 



C. crebricinctum Cpr., Proc. Cal. Acad. Sci. iii. p. 2[5, 1S65; Tryon, Man. viii. p. 21S, pi. 



67, fig. 71, 1886. 

 C. magnum Stearns, Tryon, Man. viii. p. 219, pi. 67, fig. 83, i885. 



Fossil in the Pliocene of San Quentin Bay, Lower California, Orcutt ; 

 Post-Pliocene of San Diego, Cal., at Coronado beach, and living on the coast 

 of California from San Pedro to San Diego in shallow water. 



This is a very large brownish species, with strong extremely close-set 

 annulations and a conical plug with the mucro slightly right-handed. 



Csecum glabrum Montagu. 



Dentaliuin glabrum Mont., Test. Brit. ii. p. 497, 1803. 

 CcBcum glabrum Fleming, Edinb. Encyc, pi. 204, f. 7, 1817. 

 Odontidium levissimum Cantraine, Bull. Brux. ix. p. 2, 1S42. 

 Brochus glabrus Brown, 111. Conch. Grt. Brit., p. 125, pi. 56, f. 3. 

 Brochina glabra Cpr., Mon. Cascidse, P. Z. S. 1858, p. 23. 



Chesapeake Miocene at Yorktown, Va., Meyer; Pliocene (Crag) of 

 Britain and of the Caloosahatchie, Dall ; Post- Pliocene of Norway, Sars ; 

 living on the coasts of Europe, both Atlantic and Mediterranean, and in the 

 Canary Islands, on the east coast of America from North Carolina to Florida, 

 U. S. Fish Commission, Jewett, etc. 



The specimens of this widely distributed form were identified by the 

 Marquis de Folin. 



Osecum carolinianum n. s. 

 Plate 22, figure 25. 



Pliocene of the Caloosahatchie, Dall ; living off the coast of North Caro- 

 lina in fourteen to eighteen fathoms, U. S. Fish Commission, and at Egmont 

 Key, Florida, Jewett. 



Shell well covered, when living, by a thin yellow, caducous epidermis, un- 

 derneath which it is white or translucent, maculated or streaked with opaque 

 white; shell stout, rather thick, short, arched; sculpture of an obsolete 

 shagreening seen with difficulty even with a lens, but which comprises faint 

 longitudinal striae, faint annulations and dichotomous impressed lines ; the an- 

 nulations are best visible near the aperture, the longitudinals on the back of 

 the arch ; aperture simple, the shell about it slightly enlarged, but not margi- 

 nate ; posterior end simple, plug conical, the mucro formed by the apex of the 

 cone, which is slightly truncate and to the right hand of the median plane of 

 the shell. Lon. 4.75 ; diam. of aperture i.o; of posterior end \\ mm. 



The description has been drawn from the recent specimens, as the fossil 

 ones were not adult. They have been examined by M. de Folin and were 

 pronounced by him to be undescribed. 



