rang bd of 
Depth at which Range" of the prr ron | 
the dead did living Molluscs | at the | Remarks. 
knit | in.the North= | coasts of 
| East Atlantic, | Norway | 
| tibenid godhed) 
Trochus zizyphinus, Chemn. . | St.4. 530fms,|  sublittoral — | 0—20 | 
Lacuna divaricata, Fabricius .| — — | 1—10 f—1—10 | 
— puteolus, Turton...... — — | 1—10 | 1—10 | 
Rissoa striata, Adams....... — — | 0—50 fg OrEBOt | 
Pecten tigrinus, Miller …… St. 5. 189 fms. 5—155 B.M. | 10—100 | 
Venus fasciata, da Costa..... — — | sublittoral | 5—50 | 
Mactra solida, Linné ........ — — | 5—50 |: 20.0 
— elliptica, Brown ..…. hann eg FEB. M. | BssB50 | 
Trochus zizyphinus, Chemn. | — | sublittoral | 0—2%0 | 
Lacuna divaricata, Fabr. .,..| — md 1—10 | 1—10 | 
Littorina rudis, Maton .....: =2 — | 0—5 | 0—5 
Rissoa striata, Adams....... | —50 | 0—50 
Mactra elliptica, Brown ...… St.7. 650 fm, 5—75 BM. | 5—50 
Margarita groenlandica, Chmn, | — — | 0—100 | 0—100 |, Fragments". 
Lacuna divaricata, Fabricius. — 10 | 1—10 |A dead, adult 
Cyprina islandica, Linné .… |St.58, 540 fms; 2100 | 2—50 
Hydrobiæ ulvæ, Penn…...... = æ% littoral | littoral 
| 
The position of the dredging-stations from the ,,Ligtbuing" 
and the ,,Porcupine" is shown on the maps in C. Wyville Thom- 
son's: The depths of the Sea (London 1873). 
St. 2. 170 fms. is situated in the middle of the Færoe-Channel 
on a very restricted shoal, the bottom of which, according to C. W. 
Thomson, chiefly consisted of »small rounded pebbles of the dark 
anamesite of the Færoes". It must be regarded as improbable that 
the named -shallow-water forms should have lived at so considerable 
a depth; still the possibility is not quite excluded. The species 
belong most. likely to a level from 100 to 160 fms. higher than 
the place where they were found. 
St. 4. 630 fms. is in the Færoe-Channel about 85 miles 
north-west of the Hebrides. The most well marked shallow-water 
