128 JOURNAL OF CONCHOI.OGY, VOL. I4, NO. 4, OCTOBER, I913. 



L. lucida Lov. has been dredged off the Butt of Lewis in 53of. 

 ('Knight Errant'), and midway between Shetland and Norway in igyf. 

 (Simpson) ! 



L. lenticula Moll.— Off Loch Ryan 24f., three valves. 



L. frigida Torell.^— Off the Butt of Lewis 53of. ('Knight Errant') ; 

 S. W. Ireland 345f. (R.I. A. cruise). I have three valves of this 

 species dredged off Loch Ryan in 25f., another valve from Eigg 

 Island in 2of., and another from the Mull of Cantire in 26f. (The 

 Eigg Island valve I had already recorded as L. lenticula by error in 

 Join-}i. of Conch., 1897, vol. viii., p. 344). Though apparently recent, 

 these valves may be fossil or semi-fossil. They are larger and 

 coarser in every way than Arctic or 'Porcupine' specimens. L. frigida 

 has a very wide range, and is a Glasgow post-tertiary fossil. 



Leda? sp. — A valve of another species of Leda, from off Loch 

 Ryan in 25^, is intermediate between L. frigida and Z. tennis, but 

 distinct from i)oth. 



Limopsis aurita Brocc. — S. W. Ireland 345f. (R. I. A. cruise) ; 

 off the Shetlands i55f. (Simpson)! 



L. minuta Phil.=Z. borealis Woodward MS. — A genuine British 

 species ; it has been dredged between the Orkneys and the Shetlands 

 in i45f. (Simpson)! Also the Faroe Channel, 5i6f., with L. crisiata 

 (Triton) ! Atlantic off Ireland and off the Scillies, with Z. aurita 

 ('Porcupine'). 



L. cristata Jeff. — Several living specimens and half-a-dozen valves 

 were dredged 80-90 miles N.VV. of the Butt of Lewis (lat. 59' 36", long. 

 7 W.) in 545f., during a cruise of the Scottish Fishery Board in 1906 

 (Simpson) ! 



Pectunculus glycymeris var. nummarius Turt. — A figure of 

 this variety is given by Forbes and Hanley.^ 



Area pectunculoides Scacc. — Straits of Korea 4of. (FI.M.S. 

 ' Sylvia ') ! 



A. obliqua Phil. — Between the Orkneys and Shetlands i45f., 

 valves only; and off the Shetlands i55f., valves only (Simpson)! 



A. lactea L.— Straits of Korea 4of. (H.M.S. 'Sylvia') ! 



A. nodulosa Mlill. — Between the Orkneys and Shetlands, i45f., 

 a perfect specimen and several valves; off the Shetlands, i55f, 

 another specimen; and between the Shetlands and Faroes, i3if. 

 (Simpson)! Shetland-Faroe Channel 57of. ('Triton') ! The record 

 of Mr. Frank Coulson of "a living specimen off East Shetlands in 

 1886," was erroneous. 



{To be continued). 



I Spitzbergen Moll., p. 148, tal). i, fig 

 ? Brit. Moll., vol. iv., pi. .xlvi.,, fig. 4. 



