LAMELUBRANCHIATA. 



8 5 



Christiausund in western Norway, by W. C. Brogger at Christiania (in the "younger Area-clay") and 

 by Knipowitsch at Dwina. 



Remarks. Measurements of some specimens show, that the shape is more or less variable: 



Length of shell Height of shell Breadth of shell 



12.5 """. H-25 """• 8 """. 



12.5 - 10 - 8 - 



12 - 11.5 - 9.5- 



12 " 9-5 - 7-5 - 



ICardium norvegicum Spengler.] 

 Morch lias shown already (Vidensk. Meddel. Natnrh. Foren. Kbhvn. 1867, p. 94), that Jeffreys' 

 reference to this species as Faeroese (Brit. Conchol. II, 1S63, p. 296) is due to a misunderstanding. 



Cardium (Serripes) groenlandicum Chemnitz. 

 PI. Ill, figs. 12 a— b (young). 



Cardium groenlandicum Chemnitz, Conch. Cab. VI, 1782, p. 202, PI. 19, fig. 198. - Cardium borealc 

 Reeve, Conch. Icon. II, 1844—45, Sp. 131, PI. 22, fig. 131. - Cardium fabricii Deshayes, 

 Proc. Zool. vSoc, 1854, p. 333. — Aphrodite groenlandica Gould 6c liinnev, Rep. Invert. 

 Mass., 1870, p. 144, fig. 454; Sars, Moll. Reg. Arct. Norv., 1878, p. 49, PI. 5, fig. 3. 



Venus islandica Fabricius (non Linne), Fauna groenl, 1780, p. 411. — Cardinal groenlandicum 

 Moller, Index Moll. Groenl., 1842, p. 20; Beck, in Gaimard, Voyage de la Recherche, PI. 15, 

 fig. 1 — 15; Morch, Rink's Grouland, 1857, p. 92; Vidensk. Medd. Natnrh. Foren.. 1868, p. 221 

 (var. solida) ; Arctic Manual, 1875, p. 132; Rink's Dan. Greenland, 1877, p. 441 ; Friele, Nyt 

 Mag. f. Naturvidensk., 24 Bd., 1879, p. 222; Becher, Osterr. Polarst. Jan Mayen, 1886, III, 

 p. 70; Posselt, Medd. 0111 Gronland, XIX, 1895, p. 70; ibid. XXIII, 1898, p. 55; Jensen, 

 ibid. XXIX, 1909, p. 353; Hagg, Ark. f. Zool., Bd. 2, 1904, No. 2, p. 50. 



The "Ingolf" has taken this species at: 



St. 113. Norwegian Sea 1309 fm. A fragment of a left vah e. 



- 119. - 1010 - A fragment of a right valve. 



West Greenland. 



The species is one of the commonest Molluscs here, from the southernmost part of the coast 

 at least up to Upernivik; further north it has been taken by the "Fox" in Melville Bay and by the 

 "Fram" on the American side in Rice Strait (7845' X. P.). It keeps mainly to soil (clay) bottom and 

 to depths of 10 — 50 fm. It may attain a length of no""". 



East Greenland. 



It has been taken here at 9 localities, distributed from Angmagssalik to Sabine Island, with 

 depths of ca. 7— 25 (40) fm. The largest specimen was 70 """. long. 



