66 



LAMELI.IBRANCHIATA. 



Locality 

 West Greenland (Nanortalik) . 



East Greenland (Cape Dalton) . . 



— — (Turner Sound). 



Length of 

 shell 



( 46.5 ""• 



132-5 - 



40 - 



35-5 - 



35-5 - 



34-5 - 



44-5 - 



31 - 



Iceland (Reydarfjordr) 67 



43-5 

 The Foeroes (Kongsliavn) 



41-5 - 

 39-5 - 



/5I-5 



I 49 

 (Hveen) 42 



(4^ 



I 37 



Denmark (Hellebcek) 



— (Kattegat) 



Height of 

 shell 



25 '""\ 

 18 - 



22 - 



19-5- 

 20 - 

 18.5- 

 21.5- 

 17 - 



33-5 - 



22.5- 



23 - 



21-5- 

 29 - 



26 - 



23 - 

 21-5- 



21.5- 



Height 

 Length 



53-8% 

 55-4 - 

 55 - 

 54-9 - 

 56-3 - 

 53-6 - 

 48.3 - 

 54-8 - 

 50 - 

 517 - 

 55-4 - 

 544 - 

 56-3 - 

 53-1 - 

 54-8 - 



524 - 

 58.1 - 



Breadth of 

 shell 



14.5 '""\ 



II 



14 - 



H-5 - 



12.5 - 



12.25 - 



16 - 



10.5 - 



20.5 - 



14 - 



12.5 - 



16 - 



M-5 - 



14-5 - 

 14 - 



11.25 - 



Breadth 

 Length 



31-2 % 

 33-8 - 



35 - 

 40.8 - 



35-2 - 



35-5 - 



36 - 



33-9 - 

 30.6 - 



32.2 - 



31.6 - 



31-1 - 

 29.6 - 



34-5 - 

 34-1 - 

 304 - 



Mocliolaria faba (Miiller) Fabricius'). 

 PI. Ill, fig.s. 8a~c. 

 Mytibis faba Mitller, Prodr. Zool. Dan., 1776, p. 250; Fabricius, Fauna groenlandica, 1780, p. 419. — 

 Modiola arctica Leach, in Ross, A voyage of discovery, 1819, App, II, p. 62. — Modiola faba 

 M oiler, Index Moll. Groenlaudise, 1842, p. 19. — Modioki fiibiis Beck, Anitl. Ber. 24. Ver- 

 samnil. detitsch. Naturf. u. Aerzte in Kiel, 1847, P- ^^y — Crriiclla deciissata Walker {iioii 

 Montagu), Journ. Roy. Dublin Soc. Ill, i860, p. 72. — Modiolaria faba Beck, in Gainiard, 

 Voyage de la Recherche, PI. 17, figs. 4a — i; Packard, Mem. Boston Soc. Nat. Hist. I, 1867, 

 p. 280; Morch, in Rink, Dan. Greenland, 1877, p. 442^); Dall, Bull. U. S. Nat. Mus., XV, 

 1879, p. 146. — Crcnclla faba Jeffreys, Sc. Proc. Dublin Soc, N. S., II, 1880, p. 128; Bush, 

 Proc. U. St. Nat. Mus. 1883, p. 244, PI. 9, fig. 3; Dall, ibid., 1886, p. 207; Pfeffer, Jalirb. 

 Hamb. wiss. Anst., 3. Jahrg., 1886, p. 44. — Modiolaria faba Posse It, Medd. om Gronland, 

 XXIII, 1898, p. 22. — Crcnclla faba Grieg, Rep. Sec. Norw. Arct. Exped. in the "F"ram", 

 No. 20, 1909, p. 10, PL I, fig. I. 



The shell more or less ventricose, somewhat trapezoidal with a faint tendenc>- to be oval, 

 truncate in front, anterior margin rather curved, obliquely rounded posteriorly, ventral margin faintly 



') Of this little known species I give here a svnonyni3--list, which is complete, so far as I know; by far the most of 

 references, howevei", are to tionnna mtda only. — I think it donbtful whether M. faba is a MotHohria, but it seems to me to 

 stand further from the genus Crenella, and I retain the species under Modiolaria, therefore, to avoid founding a new genus on 

 a single, northern species. 



=) Morch has forgotten to include the species in his earher hsts on the Mollusca of Greenland. 



