OF NORTHUMBERLAND AND DURHAM. 47 



the tentacles and margin of the vientum, which are of a deep 

 golden yellow. The liver, as seen through the shell, is green in 

 E. cUstorta, and purplish in E. polita. 



2. E. LINEATA, SoiO. 



Helix suhulata, Mont. Test. Brit. Supp. 142 (small variety). 

 Rissoa suhulata, Johns, in Berw. Club Proc. i. 272. 

 In shell-sand, rather rare, One specimen alive from the boats 

 at Cullercoats. — J. A. One live and two dead specimens were 

 dredged by Mr. R. Howse, off Whitburn. 



The animal is white with two long subulate tentacles, ap- 

 proximating at the base, with the eyes immediately behind 

 them. The foot extends a good deal before the head, and has a 

 bilobed flap on the upper surface in front, which appears to be 

 common to the genus, as we have observed it in all the British 

 species. The head is seldom protruded beyond the shell, which, 

 being transparent, the animal can easily see through. 



Two species appear to be included under the name of ^. suhio- 

 iata. The shell figured, and described by Donovan, which is 

 much larger than this, and has several bands on the body 

 whorl, is rare. It ought to retain the name of E. suhulata, 

 and is also the Melania Gamhessedesii of Payraudeau. The 

 smaller and much more common species has only two bands, 

 placed close together in the centre of the body whorl, with oc- 

 casionally a faint indication of another on the upper or lower 

 margin. The shell is thinner and more transparent than in the 

 larger species, the whorls less oblique, the lower one a little 

 more ventricose, the aperture not so much contracted, and the 

 columellar margin not quite so straight. This is probably the 

 species called E. lineata by Mr. Sowerby, whose name we adopt, 

 though we would gladly change it to hilineata, the better to ex- 

 press its distinguishing character. A species in the British 

 Museum, from Madeira, comes very near to this, but has only 

 one band. 



46. SCALARIA, Lamard-. 



1. S. COMMUNIS, Lam. 



Turho clathrus, Mont. Test. Brit. 29(;. 



