168 CONTRIBUTIONS 
FAMILY COLUMELLARIA. 
GENUS MITRA. Lamarck. 
JM. lineata. Plate 5. Fig. 174. 
Description. Shell subfusiform, longitudinally and in- 
distinctly ribbed, furnished with a small transverse line 
below the suture; substance of the shell thin ; spire some- 
» flattened ; 
mouth narrow; columella with four folds; outer lip 
what elevated; suture small; whorls 
sharp; within striate. 
Length .3, Breadth 3-20ths, of an inch. 
Observations. A single specimen only of this species, 
and that with the spire fractured, has been examined by me. 
The folds are placed towards the base, which causes it to 
look somewhat like a Pyramidella. The figure of Mr 
Murchison’s JW. cancellata from Gosau, has some resem- 
blance to our shell.* 
M. minima. Plate 6. Fig. 175. 
Description. Shell fusiform, smooth ; substance of the 
shell thin; spire somewhat elevated, rounded at the apex ; 
* Geol. Soc. Trans. vol. 3, pl. 39, fig. 30. 
