76 FAUNA OF THE CORNBRASH. 



the surface curving round like the side of a dome. The shell is 17 mm. in length. 

 From Scarborough. In the Sedgwick Museum. 



Distribution. — The type is not either of those which have been examined before, 

 but as it resembles so closely Lycett's figure from " near Scarborough," which does 

 not agree with his description, that figure may by accident have been substituted 

 from another specimen of this species ; but the name goes with the description. 



Relations. — The type is so pointed at the apex and so swollen at the bottom, 

 that it resembles a tear-drop, and thus has a quite characteristic aspect. Whether 

 any specimens once named Eulima ought not rather to be called Pseudomelania, 

 this at least is a true Eulima. 



Eulima extricata, sp. nov. Plate VII, fig. 21. 



1882. Eulima Isevigata, Hudlestou, G-eol. Mag. [2], vol. ix, p. 245, pi. vi, fig. 8 (non Lycett). 



Type. — Length 32 mm. ; sutural angle, 23°. About ten whorls, the last being 

 little more than of proportional size ; height f of diameter. " The whorls are 

 extremely round and full, with a deep suture which gives a strangulated appear- 

 ance. The whorls are so extremely smooth that even the lines of growth can 

 scarcely be detected" (Hudleston). They are consequently characteristically 

 polished. The last whorl, though seen only at the back, does not seem to be 

 elongated. From Scarborough. In the British Museum. 



Distribution. — The specimen figured by Hudleston is also from Scarborough, 

 and casts have been seen which from their shape may possibly belong here from 

 Scarborough (1) and Sudbrook (1). 



Relations. — The rotundity and strangulated appearance distinguish this species 

 very well from any other true Eulima, but make it more doubtful whether it is 

 rightly referred to that genus. Moreover the specimens are rather large for it. 

 Yet there is no Pseudomelania of which they can be suggested as the young. 

 In general form they resemble Morris and Lycett's figures of Eul. communis, but 

 according to their description there are peculiarities about that shell neither 

 shown in their figures nor repeated in our fossils. The relative shortness of the 

 body whorl, even more perhaps than the want of ornament and the size, seems 

 to preclude the idea of a Pseudomelania, so that this species is congeneric at 

 least with the specimen figured as Eul. Ixvigata by Hudleston. 



Family Pseudomelaniad^. 



After having been attached to various groups of living shells with which 

 they had some point of resemblance, it has been found that the Pseudomelaniadse 



