3q LAMELLIBRANCHIATA. 



Gronland, 1857, p. 92; Vidensk. Medd. Naturli. Foreu., 1868, p. 220; Arctic Manual, 1875, p. 132; 

 Rink's Dan. Greenland, 1877, P-44^; Posselt, Medd. om Gronland, XIX, 1895, p. 70; ibid. 

 XXIII, 1898, p. 57; Hiigg, Ark. f. Zoologi, Bd. 2, 1904, No. 2, p. 51; Jensen, Medd. oni Gron- 

 land, XXIX, 1909, p. 352. 



The ''Ingolf has taken this species at: 



St. 113. Norwegian Sea 1309 fm. i valve, of a very small spec. 



- 104. — - 957 - I small spec, dead bnt with 



connected valves. 



98. W. of Iceland 138 - 5.9° C. i spec, (yonng). 



West Greenland. 



Here the species is very common from the sonthernmost part of the coast at least np to 

 Upernivik; fnrther north, it has been taken in Melville Bay ("Fox"), and on the American side it has 

 been fonnd as far north as at Grinnell Land in Dobbin Bay (79°4o' N. L-). It occnrs most freqnently 

 on clay bottom and in moderate depths (10—80 fm.), bnt is also found both on hard and quite soft 

 bottom, as also in greater depths (100 — 280 fm.). The largest specimen is 65""". long. 



East Greenland. 



It has been taken here at 5 localities, from Angmagssalik to Mackenzie Ba)- (65''35' — ca. 73'// N. L.) 

 and in depths of ca. 10 — 40 fm. The largest specimen is 62 """. long. 



Iceland. 



On the north coast Cardiiiiii ci/iafiii/i is very common, as also on the east coast (at least down 

 to Berufjordr") and on the north-west coast; on the south-west coast it lives in Hvalfjordr^); on the 

 south coast it has not been found. It keeps especially to clay and sand mixed with clay, but is also 

 found where there is ooze. The depths vary from 6—85 fm., but are most frequently 25—50 fm., the 

 young however being comparatively frequent in more shallow water; on the other hand, the "Ingolf 

 took a very young specimen (living) at 138 fm. (cf. above). The maximum length is 74""". 



The various places where the species was found are as follows. 



East Iceland: 



Myre Bugt 58 fm., sand mixed with ooze. i spec. 



Lonsvik 40 - , ooze and clay. 4 — & 10 valves. 



Berufjordr 6 - , mud with black sand. 2 — 



— mouth 54—41 - , ooze. 27 — 



Breiddalsvik 14 - , sand. 3 — 



Faskrudsfjordr 50 — 20 - , blue clay. 24 — 



') On the boundary to the south coast it has been taken in Lonsvik and Myre Bufjt, but only as small and dead 

 specimens. 



2) It has also been taken at various places out in Fa.xatjordr (ef. the following list), but only as dead specimens 

 and valves. 



