46 



LAMELLIERANCHIATA. 



Ill addition L.jcffrcysi has been taken by the "Thor" at tlie following places south of Iceland: 



63°05' N.Iv., 20°7' W. L 293 fm. 7 valves (mostly fragments). 



52°57' i9°58' — 5°° ■ ^'^- ^° valves (many fragments). 



The largest of these shells is 12""". high. 



This species is easily recognizable by its oblique shape, its squamular radiating ribs (fig. loc) 

 and its lack of a central furrow. The number of ribs is 20—25, and even in the middle of the shell 

 their breadth is less than that of the intervening furrows. 



L.Jeffreysi was only known earlier from the Bay of Biscay, 580 fm. ("Travailleur"). 



This species is nearly related to L. coti/iisa E. A. vSmith') from the Azores, Sombrero Island 

 and Pernambuco, 450 — 1000 fm.; this again is said to be identical with L.ovata Jeffreys (non Searles 

 Wood 2) from the North Atlantic, 1450 fm. L. scfifcra Da 11 3) from Havanna, Barbadoes and North 

 Carolina, 52—4501111., is also a nearly related species. 



Lima sarsii Loven. 

 PI. II, fig.s. iia— d. 



lLi))ia crassa Forbes, Rep. Brit. A.ssoc. Adv. Science, 1843, p. 193. — Lim(c)a Sarsii Loven, Index 

 Moll. Scand., 1846, p. 32; Jeffreys, Brit. Conchol. II, 1863, p. 78, PI. 25, fig. i. — Liinatiila 

 crassa Sars, Moll. Reg. Arct. Norv. 1878, p. 26. 



At Iceland this species has been taken by the "Ingolf" at: 



St. 98. W. of Iceland 138 fm. 5.9° C. i valve. 



- 85. S. W. of Iceland 170 - i — 



The largest of these shells (St. 98) is 4'""'. 



Further, L. sarsii has been taken at the Faeroes at: 



61° 15' N. L., 9° 35' W. Iv ca. 475 fm. i valve (height 4""".) 



61° 35' - - 4° 39' - - 210 - 2 valves (max. height 3 """.) 



This species, which is readily recognizable from its solid, densely and coarsely scaled shell (fig. 11 d) 

 and creiiulated cardinal margin (fig. 11 c), was not known earlier from these regions of the Atlantic. 



Its distribution extends from northernmost Norwa}- (Varanger Fjord) along Europe and 

 into the Mediterranean to the Aegean Sea-i). It is not known in the Skager Rak or the seas within this. 



G. O. Sars estimates the vertical distribution to be from 50— 30ofni., Jeffreys from 80— 30ofm. 

 Nevertheless the latter records it from great depths (off Ireland and on the line from Falmouth- 

 Gibraltar, 400, 500 and 600 fm., in the JMediterranean even 1456 fm.), and lyocard records it from 

 2018 meters off Cape Finisterre. 



1) Challenger Report, vol. XIII, 1885, Lamellibranchiata, p. 292, PI. XXIV, fig. 6. 



2) Ann. Mag. Nat. Hist. (4) vol. XVIII. 1876, p. 426. 



3) Bull. Mus. Comp. Zool., XII, 18S6, p. 225; Proc. U.S. Nat. Museum, XII, 1S89, p. 250, PI. XIV, fig. 10. 

 ^) According to Locard it is said to have been found at St. Helena. 



