Geological Survey of Alabama. 77 



CYLIPHNA OVIFORMIS, n. sp. PI. 2, fig. 32. 



Length nearly double the breadth ; umbilicate at the top and with an 

 umbilicate fissure at the colurnella ; smooth, except some faint impressed, 

 revolving lines. 



Localities. Jackson, Miss., Red Bluff, Miss. 



The type-specimen is from Jackson. The form in Red Bluff seems to 

 be a little more flattened. 



CYLICHNA JACKSONENSIS, n. sp. PL 2, fig. 25. 



Length two. and a half times the breadth ; umbilicate at the top and 

 with an umbilicate fissure at the columella ; the faint impressed, revolv- 

 ing lines are more distinct near the base and the top. 



Locality. Jackson, Miss. 



Considerably more slender than the preceding species. Cylichna St.- 

 Hilairii, Lea, sp., from Claiborne, is flat, almost cylindrical, while 

 Cylichna Jacksonensis is rounded. The same differences exist in regard 

 to Cylichna Kellogii, Gabb, from Texas. 



CYLICHNA SUBRADIUS, n sp. PI. 1, fig. 17. 



Cylichna eonfr. radius, Desh. Am. Jour. Sci., XXIX., 1885, p. 468. 



Small, rounded cylindrical ; spire produced, acute ; inferior part, except 

 the base, with impressed, revolving lines ; base with a minute, umbilicate 

 fissure ; aperture but little widening. 



Locality. Claiborne, Ala. 



Belongs to the subgenus Volvula. In its slender and not inflated form 

 and its acute top, it differs essentially from Cylichna Dekayi, Lea, sp., 

 from the same locality. A similar species, however, seems to be Bulla 

 cylindrus, H. C. Lea,* from the Miocene. It scarcely differs from Bulla 

 radius, Desh.,f of the Paris basin. A specimen from Wheelock, Texas, 

 determined as Volvula Conradiana, Gabb,J is less slender, but else very 

 similar. An examination of a large amount of material may lead to a 

 unison of Cylichna subradius with one or all of the last-named species. 



ACTION ANNECTENS, Meyer. PI. 2, fig. 30. 

 Am. Jour. Sci., XXIX., 1885, p. 466. 



Conic-ovate ; whorls six ; one and one-half smooth, embryonic whorls 



* Trans. Am. Philos. Soc., 1843, IX., Second Series, p. 250, pi. 35, fig. 43. 



fDesh., An. s. verteb., II., p. 226, pi. 39, figs. 22, 23. 



t Jour. Ac. Nat. Sci., Philadelphia, IV., Second Series, 1860, p. 386, pi. 67, tig. 51, 



