8o Bulletin 4 194 



columella slightly curved; retral sinus very moderate. 

 This is a very small and beautifully sculptured species. 



Locality. — Alabama: i mi. W. of Oak Hill P. O., Wilcox Co. 



Type and specimen figured. — U. S. Nat. Museum collection. 



The type is labelled simply Sta. 283, Wilcox Co., but doubt- 

 less came from the same locality as our University specimens. 



OLIVELLA. 

 Olivella mediavia n. sp. , PI. 7, fig. 19. 



Specific characterizatio7i. — General form and size as indicated 

 by the figure; whorls about 7; the first extremely small, the 

 second much larger, and the third still greater, producing a 

 blunt appearance; remaining spiral whorls nearly or quite covered 

 b}^ the sutural callosity; body whorl smooth, but the direction of 

 the lines of growth can be traced with a glass; growth lines 

 slightly geniculated about three-fourths of the way from the 

 suture to the anterior folds at a faint depression which produces 

 a faint tooth on the margin of the outer lip; columella well 

 twisted below where it is 7-8 striate; above on the columella there 

 is often a large obtuse fold which marks a former position of the 

 upper margin of the slit for the anterior canal. 



■Localities. — Alabama: i mi. W. of Oak Hill (Type); Mat- 

 thews' Landing; ^ mi. W. of Graveyard hill; 

 Black Bluff, Tombigbee river; ? 4 mi. below 

 Black Bluff. 



Type. — Paleontological Museum, Cornell Univ. 



CARICELLA. 



Caricella leana, PI. 7, fig. 20. 



Syn. Scaphella {^Caricella') leana Dall, Trans. Wag. Fr. Inst. 

 Sci., vol. iii, p. 86, pi. 6, fig. 9, 1890. 



Dall's original description. — "Shell small, elongate-fusiform, 

 of five or six whorls; nucleus small with a distinct spur or ele- 

 vated point (which formation may conveniently be termed the 

 calcarella) and composed of one whorl; suture closely appressed, 

 the whorl somewhat constricted in front of it; the whole shell 

 sculptured with small, subequal, close-set flatfish spiral threads 

 across which the incremental lines are hardly perceptible; aper- 

 ture longer than the spire, narrow, with a faint recession at the 

 suture ( * * >ii :^ * ^ Q^^ a long, narrow. 



