LAMELLIBRANCHIATA. 



lOI 



Iceland. 



A.Montagui has been taken in large quantity on the west coast, in part also on the east 

 coast; from the south coast there are but few specimens and from the north coast onh- one, but 

 whether this is due to imperfect collections or to the actual scarcity of the species on the north coast, 

 I am unable to say'). The depths noted lie between ca. 8 — 50 fm. On the west coast it reaches to 

 19 """., and on the east coast to a very considerable size, namely 26.2 """. 



The various localities are as follows. 



East Iceland: 



Myre Bugt 26 fm. i val\e. 



Berufjordr, Djupivogr 6 — 9 - , mud with black sand. 50 spec. 



Mouth of Berufjordr 54 — 41 - , ooze. i — 



64°58'N.L., i3°25'W.L 40 - 4—8: 27 valves. 



Breiddalsvik 14- 2 — &.i valve. 



Vattarnes 20 — 16 - i — 



Vidfjordr 8 — 12 - i — 



- 15 - 2 - 



Nordfjordr 40 - 9 — 



Seydis^ordr 15 — 20 - i — 



— , the mouth 38 — 14 - , mud. 12 — 



— , off Brimnes .... 40 - , ooze and clay. i — 



The specimens from East Iceland belong in part to the variety striata, in part to the t>pical 

 form or to transitional stages between the two, as will be seen from the following measurements: 



Height Breadth 



LocaUtv Length Height Breadth 7- 



Length Length 



Djupivogr 26.2 ""^. 23 "'"■. 87.8 °/„ 12.5 "'"'. 47.7 % 



— 24.7 - 22.25- 90-1 - II-2 - 45-3 - 



— 22.5 - 18.75- 83.3 - 12 - 53.3 - 



Berufjordr 16 - 14.5 - 90.6 - 8 - 5° " 



Vattarnes 17 - H-S " 85.3 - 9.2 - 54.1 - 



Seydisfjordr 22 - 19.25 - 87.5 - 10 - 45 " 



21.2 - 19 - 89.6 - 10.2 - 48.2 - 



— 20.5 - 18.5 - 90.2 - 10 - 48.8 - 



20.2 - 17.8 - 88.1 - 10 - 49.5 - 



_. 20 - 18 - 90 - 10 - 50 - 



20 - 17.2 - 86 - 10 - 50 



— I9-.5 - 17 - 87.2 - 9.25 - 47.4 - 



— 19 - 17 - 89.5 - 9 - 47.4 - 



Nordfjordr 21.8 - 18.75- 86 - 10.8 - 49.5 - 



— 21.5 - 19 - 88.4 - 1 1.75 - 54.7 - 



— 20.2 - 18.25 - 90-3 - 9-5 - 47 - 



I) As Odhner in his list over the comparatively small collection of marine Mollusca from Iceland in the Stockholm 

 Museum records the species from 2 localities from the north coast (Arkiv for Zoologi, Bd. 7, No. 4, 1910, p. 20), the first view- 

 seems to be the most probable one. 



