50G ON THE FAUNA AND BOTTOM-DEPOSITS NEAR THE 30-FM. LINE 



These they find least frequently on the tine sand grounds. Anomia is 

 taken attached to stones, shells — both living and dead — worm tubes, 

 and various crabs, especially Inachus dorsettensis and Hyas coardatus. 



Distribution. Geographical. A. cpMpinwni — Iceland, Fiumark, Lapland, Norway, 

 West Europe to JIadeira and Azores ; Labrador, Brazil, Cuba, and Corea {fide Locard, No. 

 60). A. patdliformis — Lofoten Islands to Azores, North-East America (ditto). 



Depth. A. ephijjjmun — Low-water (Jeii'reys) to 1118 lathonis {Liyhinincj, fide Locard, 

 No. 69). A. patelliformis — 10 fathoms (Jeffreys) to 771 fathoms {Porcvpine). 



Botlom-deposit. The authors for the most part state simply that the animals are found 

 attached to stones and shells. 



Chiton asellus. On all grounds where there are suitable objects, shells, 

 stones, etc., upon which it can fix. Least frequent on the fine sand 

 grounds. A favourite locality is on Leyralia foliacca when that polyzoan 

 is present. 



DisTUiBUTiON. Geographical. Greenland, Iceland, Scandinavia, British Seas, Vigo 

 Bay, Mediterranean (Jeffreys). 



Depth. Laminarian zone to 145 fathoms (Jeffreys). 



Bottom-deposit. The authors all state that C. asellus is common on shells and stones. 



Chiton discrejxtns. Two specimens (flesh-coloured) were found on the 

 Prawle Stony Ground (XVIIL), on red trias rock, in haul 4. 



Gwyn Jeffreys states that this species is found in the Channel Islands, Cornwall, French 

 Coast, and in the Mediterranean, from low-water to 25 fathoms. 



Dentalium entalis (Chart XV.) has been obtained on all fine sand 

 grounds upon which the dredge, fitted with a canvas bag, has been used, 

 with the exception of haul 104 on the fine sand of the outer trawling 

 ground (Ground IT.). It is seldom captured by the ordinary dredge or 

 by the trawl. Occasionally only on gravel grounds. 



DisTRiBUTiox. Geogru'phicul. Iceland, West Europe to Mediterranean, State of Maine, 

 and North-West America (Jeii'reys). 



Depth. 3 fathoms (Jeffreys) to 300 fathoms (Herdman, No. 40, Vol. VI., p. 82). 



Bottom-deposit. Forbes (No. 24, Brit. Assoc, 1850) records it thirteen times from gravel, 

 shell, or nullipore bottom, seven times from sand, six times from sandy mud, live times 

 from mud. ]\Ietzger (No. 77) records it generally from muddy sand in the North Sea. 

 Petersen (No. 95) in the Kattegat from deposits containing a considerable admixture of 

 mud ("stferkt lerljlandet Bund"). Herdman records it from mud at 200 fathoms in 

 Norway {I. c, p. 80). 



Pileopsis hvngaricus. This species has been taken only on the gravels 

 west of the Eddy stone (Grounds XI., IX., X., and XIV.) and on the 

 Bolt Head Shell Gravel (XVII.). It is found attached to shells. 



Distribution. Geographical, Iceland, Finmark to Gibraltar, and Mediterranean 

 (Jeffreys). 



Depth. 7-145 fathoms (ditto). 



Bottom-deposit. The autliors agree in stating that tlie species occurs on rocky and stony 

 gi'ound or on sliells. 



Emrmjinula reticulata (Table VI.) E. fissura of Jeffreys. Very 

 constant, but seldom in great numbers, on all the grounds where 

 shells (upon whicli it creeps) are plentiful. 



