242 ORGANIC REMAINS. 



BucciNUM. Whelk. No. 3, PI. XI, may be assigned to this 

 genus, though the lips and beak are too imperfect to enable us to 

 speak with certainty. Like b. fiammeum of Dillwyn, it is longitudi- 

 nally plaited and transversely nodulous ; having two rows of large 

 tubercles on the body whirl, and one row on each of the other 

 whirls. The plaits are undulated, but are somewhat defaced. This 

 shell, which is from the oolite, measures above two inches long, and 

 nearly two broad. — B. undatum, to which this shell bears some 

 analogy, is said to be found on Langton Wolds. — ^The large cast. 

 Fig. 9, greatly resembles B. striatum; yet it probably belongs to the 

 next genus. 



Turbo. Wreath, ox Whirl. Under this genus may be placed 

 several shells found in the oolite; some of which belong to the new 

 genus MELANiA. Of this the shell, Fig. 9, last named, is an example ; 

 being evidently the melania striata of Sowerby, Tab. 47. Mr. Sower- 

 by, by putting two fragments together, belonging to specimens of 

 different sizes, has made his figure of too long a shape. The shell, 

 or rather the cast, is pretty common at Pickering and Malton. Some 

 specimens are from six to eight inches in length, and between three 

 and four in breadth. — Fig. 7 is the cast of a small shell, nearly the 

 same in shape, but quite smooth, and no doubt of a different species. 

 It is rather rare. — Fig. 8 is a handsome cast, very like the t. tuniidus 

 of Pennant. It is akin to the helix family, and resembles the pha- 

 sianella angulosa of Sowerby, Tab. 175. Some shells, similar to this, 

 approach the t. littoreus. 



Vast numbers of our tapering oolite shells may be assigned to 

 this genus; many of them resembling t. terehra, others more elongated, 

 in the form of buccinum strigilatum. Of such it is extremely difficult 

 to obtain more than the cast, the shell itself being a brittle spar. 

 No. 10 is one of the most common species. It greatly resembles the 

 vielania Heddingtonensis of Sowerby, Tab. 39; having a kind of 



