FROM THE EDDYSTONE GROUNDS TO START POINT. 497 



known of its habits on the shore there is little chance of its being 

 captured by a dredge. 



Solecurtus candidus. Shells only have been occasionally taken. 



Distribution. Gwyn Jeffreys (No. 55) states that Solecurtus candidus is a very active 

 species whicli lives in sand exposed at low-water spring tides, and also at various depths 

 from 20-85 fathoms. Forbes and Hanley (No. 25) say that it probably buries deeply 

 in pure sand. It is a sonthern species, extending from the English Channel to the 

 Canary Islands and Madeira, and is also present in tlie Mediterranean (Jelfreys). 



Psammobia ferroensis. Shells only have been taken of this species. 



Psamviohia costulata. One specimen only on the clean shell gravel 

 (Ground XVI.) immediately west of the Eddystone reef. 



Distribution. Mediterranean, Madeira, Canaries, British Suas, Norway (Jeffreys). 



Tdlina crassa. One living specimen only was obtained in haul 99 

 and one in 87, both on the clean shell gravel close to the Eddystone 



rocks (Ground XA"I.). 



Distribution. Geographical. North Sea, French Coast, Gibraltar, and Gulf of Tunis 

 (Jeffreys, No. 55). 



Dcjith. Low-water to 55 fathoms (ditto). 



Bottom-deposit. Forbes and Hanley say that tlie species generally lives in the upper 

 part of the coralline zone in gravelly sand. At Herm, in the Channel Islands, it is found 

 in sand at low-water, and also in the Isle of Man. Forbes (No. 24, Brit. Assoc, 1850) 

 records it once on sand (35-40 fathoms) and once on gravel (40 fathoms). In' the Liverpool 

 district it is recorded on small gi'avel with some melobesia (No. 40, Vol. IX., p. 33). The 

 species appears therefore to prefer coarse ground. 



Tdlina donacina. Shells only in haul 9 (Ground XI.). 



A sonthern species, not extending further north than the west coast of Scotland ; south 

 to Azores, Mediterranean, Red Sea (Locard, No. 69). The Challeiujcr dredged it on 

 volcanic mud in 450 fathoms off the Azores (Smith, No. 107). 



Lutraria elliptica. Shells of this species were fairly common on all 



shelly grounds. They were generally old and much bored by Cliona. 



The species extends from Fiumark to the Mediterranean, and occurs in soft mud from 

 low tide to 15 fathoms (Jeffreys). As the animal generally burrows very deeply in the 

 mud, it is most unlikely that it would be captured by a dredge. 



Tapes vivf/inea. Although shells of this species, often very fresh, 

 were exceedingly common on all shelly grounds, living examples were 

 only rarely taken. These occurred on the fine gravel (XIV., hauls 41 

 and 88), on the clean shell gravel (XVL, haul 87), and on the Prawle 

 Stony Ground (XVIII., haul 29). 



Distribution. Geographical. Norway to Mediterranean, but its capital is in the 

 Celtic province (Forbes). 



Depth. Shore to 145 fathoms (Jeffreys). 



Botto)ii-dcposit. Forbes (No. 24, Bril. ytssoc, 1850) gives five records of the species 

 living on sand, one on shell and nullipores. Metzger records it from the roimacrania 

 expedition six times on stony or gravelly ground. 



Venus verrucosa. One living specimen only was taken in haul 70 on 

 Ground VII. The haul was apparently a mixed one, showing some 

 characters of Ground XIV. (fine gravel), and some of VII. (sand witli 

 many shells). 



