124 



ADDITIONS TO "BRITISH CONCHOLOGY." 



By J. T. MARSHALL. 



Part A^II. (contmiied frovi p. yj ). 



P. sulcatus Mull.=i^. aratiis Gmel. — Between the Orkneys and 

 Shetlands, 85-i45f., several specimens, and midway between the 

 Shetlands and Norway, i97f. (Simpson) ! 



P. varius var. purpurea Jeff. — Various Clyde records of this 

 shell are referable to purple specimens of the type, and not to the true 

 var. pi/rpufea. 



P. opercularis var. audouinii Payr. — Gairloch, 2of. In this 

 variety the ribs are vaulted and beautifully imbricated, but I do not 

 consider its oval shape to be more than an individual character, as 

 this varies equally with the type. Var. audouinii is the form usually 

 found in the Red Crag deposits, and is well figured by Searles Wood.^ 



P. pes-lutrse L. — The monstrous valve recorded by Gwyn 

 Jeffreys^ is not unique. I have a perfect specimen from the Shet- 

 lands, Mr. A. Somerville dredged two more at Oban, and Mr. J. 

 Simpson has another of the var. septemradiatus from E. Shetlands. A 

 similar monstrosity also occurs in P. tigrinus, but is less rare. 



P. tigrinus Miill. — Herring nets are a prolific source of supply for 

 this species. The largest come from the Doggerbank and the Moray 

 Firth, and attain an inch in length and breadth. 



P. similis Lask. — This tiny Peden is very largely consumed by 

 haddocks, who swallow them in large numbers while they flit about 

 in the open sea, as is their habit. Any one who does not mind 

 handling the offal of haddocks will find himself well rewarded. White 

 specimens are rare ; I have two or three only from the Shetlands. 



Amussium hoskynsi Forb. — Between the Orkneys and Shetlands 

 i45f., two specimens and some valves; off the Shetlands i55f, a 

 valve; and between the Shetlands and Faroes 1 3 if. (Simpson) ! It 

 has also been dredged off the Butt of Lewis in 53of by the 'Knight 

 Errant,' and north of the Shetlands in 345f. by the 'Porcupine.' 



Lima sarsii Lov. — Dredged by the Scottish Fishery Board in the 

 North Sea 53f, a valve; between the Orkneys and Shetlands i45f., 

 and off the Shetlands i55f., several specimens and many valves 

 (Simpson)! Also by H.M.S. 'Sylvia' in the Straits of Korea 20- 



5of- (!) 



L. hians var. tenera Turt. — Alderney (Marquand) ! 



1 Crag Moll., vol. ii., tab. 6, fig. -za, p. 36. 



2 Brit. Conch., vol. ii., p. 64. 



