92 



I^AMELl/IBRANCHIATA. 



Astartidae. 



Astarte borealis Chemnitz. 

 PI. IV, figs. I a— f. 



Venus borealis Chemnitz (partim), Conch. Cab. VII, 1784, p. 26, PI. 39, fig.412 (non fig.s. 413— 414'). — 

 Tridonta borealis Sars, Moll. Reg. Arct. Norv., 1878, p. 50, PI. 5, fig. 8^). 



Astarte arctica Moller, Index Moll. Groenl., 1842, p. 19. — Astarte seinisiilcata Morch, Rink's Gron- 

 land, 1857, p. 92; Vidensk. Medd. Natnrh. Foren., 1867, p. 95; ibid. 1868, p. 222; Arctic Mannal, 

 1875, p. 132; Rink's Dan. Greenland, 1877, p. 441. — Astarte borealis Posselt, Medd. om 

 Gronland, XIX, 1895, p. 71, PI. I, figs. 8—12 (yzx. sericca Poss.); ibid. XXIII, 1898, p. 61; 

 Jensen, ibid. XXIX, 1909, p. 335. 



The "Ingolf has taken this species at: 



St. 33. Davis Strait 35 fm. i living, i dead .spec, and i valve. 



- 35. — — 362 - I valve of a yonng spec. 



- 86. W. of Iceland 7^ - 8 valves of yonng spec. 



- 124. N. - — 495 - I valve. 



- 125. - - - 729 - I - 



- no. N. E. of — 781 - 4 valves (corresponding). 



-120. — - — 885 - 4 — — 



- 116. S. of Jan Mayen 371 - 4 — — 



- 1 17. - - - — 1003 - I valve. 



- 113- - - - — 1309 - I — 



West Greenland. 



A. borealis is common along the Danish part of the coast; fnrther north, it is fonnd at Port 

 Foulke on vSmith Soimd (Hayes), on the American side even at Dnmbbell Harbour at 82°3o' N.L,. 

 ("Alert & Discovery"); the bottom-soil is mud, sand and clay. The depths recorded lie between 

 5— 5ofm. 3). The maximum length is 44""". 



East Greenland. 



Here the species has been taken by Danish, Swedish and German Expeditions at quite a dozen 

 places on the stretch from Angmagssalik to Shannon Island (ca. 65°3o'"75°3o' N. L.l, in depths of 

 3 — 40 fm. The maximum length is 44 '^"'. 



'I Fig- 413 obviously represents Astnrte creiiata Gray, fig. 414 A. sulcata d. C. 



=) A fairly detailed synonymy-list for this species of many names is ^iven by Kobelt; Prodr. Moll. Test. Mar. 

 Enrop., 1888, p. 394. 



M As will be seen, the species is certainly taken in the Davis Strait at the considerable depth of 362 fm., but as the 

 shell ni question is of a young specimen, the occurrence cannot be considered as normal 



