108 Descriptions of New Fluvialik Sheik. 



tween them ; spire not remarkably elevated, but acute, of a 

 rather convex outline; whorls 8-9, somewhat convex, and 

 with sutures not prominent, but channelled ; body whorl Avith 

 about four carina?, the lowest one being indistinct ; aperture 

 small, sub-rhomboidal, with two bands in the interior, distant 

 from each other and. from the edge of the outer lip ; outer lip 

 much, twisted, auger-like, causing the sinus, which is small, to 

 curve backwards. 



Length 0.60 inch (15 millim.). Diam. 0.28 inch (7 millim.). 



Length of aperture 0.25 inch (6 millim.). 



Breadth of do. 0.13 inch (3 millim.). 



Habitat — Tennessee. 

 My cabinet. 



Obs. — A beautiful little shell, of a singularly bright, lively 

 appearance; the colors are well contrasted, very distinct, and 

 the prominent carina? add to the general clfect. On the upper 

 whorls, butxone band is visible, the lower one being concealed, 

 or nearly so, by the revolutions of the spire. It cannot well 

 be compared with any other species. 



28. Ulelaiiia cristfata. 



Plate ITT. Fig. 8. 



T. rhomboide&, carinata, subcrass&, cornea, obscure fascial; spira 

 Kiwi; anfr. f>, superioribus subplanis, ultimo superne humeroso et in 

 medio elevate carinato ; costa tcnui sub carinam revolvente ; apertura 

 rhomboideS,, intus carina externa canaliculate, fusco-lineata; columella 

 recta, in sinum acutum producta. 



Shell carinatc on the body whorl, rhomboid'al; thin, horn- 

 colored ; upper whorls not carinatc, but somewhat shouldered ; 

 whorls 5, flat, slightly concave, rapidly diminishing to the apex ; 



