MARSHALL : ADDITIONS TO " BRITISH CONCHOLOGV." 337 



by Mr. H, K. Jordan as a new species under the name of A. bro7vni^ 

 but there was no excuse for this, as I had identified the shell for hiin 

 and referred him to the necessary figures and text. 



Bulla hydatis L. — Portstewart, N. Ireland, an imperfect specimen 

 on the beach (Knight) ! It has been recorded by Sir John Murray 

 from "deep water in Loch Fyne," but, as in various other records of 

 the dredgings in the yacht ' Medusa,' they emphatically require con- 

 firmation. B. hydatis is a gregarious species, and travels in shoals, 

 being sometimes dredged in abundance for a time, and then deserting 

 the place for years. 



var. globosa Jeff. — This form has its only locality on Dawlish 

 Warren, which I suspect is the same as Clark's locality " Exmouth," 

 although the warren is cut off from Exmouth by the River Exe. It 

 lives with the type in a deep lagoon, to which the sea has access at 

 each tide, and it must be dredged for. 



B. utriculus Brocc — Brora, from haddocks (Baillie) ! Scilly 

 Islands 4of. ; Penzance, from trawlers ; St. Mawes, Fowey, Tarbert 

 2of. ; Brodick Bay 4of., Loch Boisdale 35f., West Orkneys 45f , 

 Dornoch Frith. My collection contains an unusually large speci- 

 men, from the Outer Hebrides, which is 6| lines by 4J. 



var. oblonga Jeff. — From haddocks from Sutherlandshire 

 trawlers (Baillie)! Only "a single specimen" from Loch Fyne has 

 been hitherto recorded. Besides being more oblong, the base is 

 more pointed and produced. 



B. setnilevis Seg. has been dredged in r,ooof. off the south-west of 

 Ireland, but at a distance and depth too remote, in my opinion, to be 

 considered a British species. 



B. striata Brugui. — I have a specimen of this shell from Grouville 

 Bay, Jersey, a part of the island lying opposite the French coast, 

 where it is not uncommon. Another specimen has been found by 

 Mr. E. Uuprey in St. Aubin's Bay, in the same island. Several 

 other specimens have been found in as many places on the British 

 coast, but the species cannot be considered indigenous. 



Scaphander lignarius L. — Guernsey and Herm, at low water 

 of spring tides, in muddy sand. 



var. curta Jeff. — I have this form from the north and east of 

 the Shetlands, but excepting its dwarf size it does not differ in its 

 proportions from young typical specimens. I regard it as a dwarf, 

 thin, deep-water form. 



S. piinctostriatus Migh. — Shetlands 5 if., two specimens, and 

 off the Flugga Light, north of the Shetlands, three small specimens 

 and some fragments (Simpson) 1 off the Butt of Lewis iSgf. (' Light- 

 ning'); Shetland-Faroe Channel 57of. ('Triton'); British Channel 



I Proc, Malac. Soc. , 1895, vol, i. , p. 267. 



