IO 



LAMELLIBRANCHIATA. 



Kvalbo 



Trangisvaag 6— 8fm., mud and clay. 



— 20 - , on Eaminaria. 



62°29'N.L., 7°3/W.L 60 - , sand and shells. 



5 miles N. of east point of 



Myggenaes 50 - 



7 miles N. by E. of east point 



of Myggenaes 57 - 



13 miles S. of Myggensesholm 70 - 



6i°4o'N.L., 7°4o'W.L 135 - 



6i°i5' - 9°35' - ca.475 - 



6i° 7' — 9°3°' 44o - 



6i°o6' — 8°3o' 61 - 



6i° — 8°52' 90 - 



6055' ■ 8° 5 6' ca. 75 - 



9 miles E. S. E. of Bispen . . . ea. 70 - 



5 S. S. E. 50 - 



6 — N. by W. of Kalso .... 60 - 



i 1 , — 2 miles off month of Bordo- 



vig 20—30 - 



Bordonoes in N. 75 W., i3/ 4 miles . . 30 - 



16 miles E. by S. of south point 



of Nolso 80 - 



Akralejte in N. 57 W. 12 miles . . 150 - 



13 miles W. by S. of Munken ca. 150 - 



6i°35'N.L., 4°39'W.L 210 - 



19 spec, and 22 valves. 



3 ' 67 

 30 valves. 



2 spec. 



4 - 



20 — (on Balani). 



12 valves. 



3 - 

 12 spec. 



27 and 5 valves. 



60 - (011 Alodiola modiolus). 



5 spec, and 6 valves. 

 2 7 



ca. 100 valves. 



4 — 



The largest specimen measures 23.5 n,m . A number belong to the variety aculeata. The 

 specimens from the deep localities (210—475 fm.) are thin-shelled and small (none over 11 mm .). The 

 shells may also be very thin however in the littoral belt. 



Distribution. Anomia squamula with the variety aculcala has its northern boundary in the 

 "warm area" of the White Sea (Knipo witsch) and Murman Coast (Herzeu stein). It is distributed 

 along the whole of the Norwegian coast, from the shore down to 400 fm. (G. O. Sars), and goes through 

 the Kattegat down to the northern part of the Great Belt and the Sound (C. G Job. Petersen). 

 Towards the west it is distributed, as shown above, as far as the Fceroes and round the whole of 

 Iceland. In the Zoological Museum of Copenhagen specimens occur on Cidaris papillata spikes from 

 the sea between Orkney and the Shetlands (135 fm.) and from 6o c 39'N.E, 3°o9'W.L. (203 fm.) as also 

 from many localities in the North Sea, down to a depth of 65 fm. It occurs on all the British coasts. 

 Where the southern boundary of its distribution lies, I am unable to say, as the authors have confused 

 this species with the more southerly Anomia ephippium (eomp. p. 3). but it goes at least to the Bay 

 of Biscay, where the Danish research-steamer "Thor" has taken some specimens at great depths 



