442 BULLID.E. 



so far north is not easily explicable. I entertain a high 

 opinion of Dr. Gordon's accuracy ; but I must reserve 

 my faith in the present case until I see a living specimen 

 from Scotch waters. B. striata inhabits the Mediter- 

 ranean, Adriatic, and Black Sea; and Drouet has re- 

 corded it from the Azores. The only other Atlantic 

 habitat, of which I am aware, is Faro in Algarve, where 

 M' Andrew procured it. 



B. media of Philippi (a common West-Indian shell) 

 was erroneously described by Montagu as B. ampulla of 

 Linne, the locality which he gave being Falmouth Har- 

 bour. Possibly B. utriculus was meant. Laskey must 

 have been determined to find it also at Dunbar ; for it 

 figures in his list of the shells of North Britain ! 



Genus VI. SCAPHANDER*, De Montfort. 



PI. VIII. f. 6. 



Body fleshy, not containable within the shell : mantle thick, 

 folded behind : head oblong, broad, and depressed : tentacles 

 united, and forming part of the head : eyes wanting : foot di- 

 lated, with narrow and reflected side-lobes: gizzard large, 

 composed of 3 calcareous plates ; the larger two (which form 

 the sides) are ear-shaped or triangidar, and the smallest (which 

 lies between the others) is irregularly oval, and doubled. 



Shell pear-shaped or oval, spirally striated : spire involute, 

 entirely concealed in the adult ; crown obliquely truncated, 

 perforated in the young : mouth extending the whole length 

 of the shell, contracted behind, and expanding in front : pillar 

 smooth, and blunt-edged : operculum none. 



The curious gizzard was described and figured by the 

 Cavalier Gioeni in 1783 as the type of a neAv family of 

 multivalve shells, to which he proposed to give his own 

 name ! Modern naturalists have been more modest, and 

 have contented themselves with striving for a sort of 



* A boatman ; badly compounded. 



