LAMELLIBRANCHIATA. [c 



Norway; its northern boundary, according to Sparre Schneider, is reached in Norway at 67 X. P. 

 It enters the Kattegat, in the southern part of which it is common, as also into the Sound to the 

 island Hveen. In the west, as shown above, it ranges to the Fceroes. 



Jeffreys estimates the vertical distribution of the species at o — 1X0 fin., and at Norway accor- 

 ding to Sars, it only goes down to 100 fin. and at the Faeroes to 100 (150?) fm. Nevertheless, [effrevs 

 states that the "Lightning" and "Porcupine" Exped. have taken it N. of the Hebrides at 530 fm., W. 

 of Ireland at 80S fm. and off the Channel at 257— 690 fm., as well as off Portugal at 364 I'm., but it is 

 not stated whether these were living specimens or empty shells; from the Azores also il is given by 

 Fischer and Dautzenberg from a depth of 1360m. 



Pecten islandicus Miiller. 

 PI. I, figs. 4 a— b and c — d (young 1. 



Pecten islandic-us Miiller, Zool. Dan. Prodrom., 1776, p. 24S; Sars, Moll. Keg. Arct. Norv., 1878, p. i(>. 

 PL 2, fig. 2; Verrill, Trans. Conn. Acad., X, 1899, p. 72, PI. XVI, figs. 2 — 5. - - Pecten Fabricii 

 Philippi, Abb. u. Beschreib. neuer oder wenig gekannter Conchyl., I, 1845, p. 101, Pecten 

 Tab. 1, fig. 5. 



Pecten islandicus Fabricius, Fauna groenl., 1780, p. 415; Moller, Index Moll. Groenl., 1842, p. 16; 

 Morch, Rink's Gronland, 1857, p. 94; Vidensk. Medd. Naturh. Foren. 1868, p. 225; Arctic Manual, 

 1875, P- x 33i Rink's Dan. Greenland, 1877, p. 442; Beeher, Osterr. Polarstat Jan Mayen III, 1886, 

 p. 68; Posselt, Medd. 0111 Gronland, XXIII, 1898, p. 14. 



This species has been taken by the Iugolf-Fxpedition at the following places: 

 St. 31. Davis Strait 88 fm. i°6 C. 1 spec, (small). 



- 26. — — 34 - o°6 - 1 



- 127. N. of Iceland 44 - 5°6 - 4 valves (1 with remains of soft parts). 



- 87. W. - — (Brede Bugt).. no - 2 , ancient in appearance. 



- 86. — - — — . . 76 - 1 small spec, and several valves, ancient in 



appearance. 



6. E. - -- 90 - 7°6 - 1 young spec. 



West Greenland. 



Very common from the southernmost parts and as far north as zoological investigations 

 have been made, namely to Ivsugigsok (76' X. P.). The largest specimen I have seen is from 

 Egedesmiude and measures 105 mm . It occurs most frequently at depths of 15— 50 fm. and prefers 

 hard bottom. At some of the colonies (Holstensborg, Egedesminde) the Danes frequently send 

 out men to dredge for it on the "banks", where it flourishes in quantity, especially when they have 

 guests to whom they wish to offer this Greenland delicacy; its large adductor muscle has a very 

 good taste and it even seemed to the malacologist H. P. C. Moller "more tender and finer in the flesh 

 than Ostrea edulis". The same author states, in a manuscript, that /'. islandicus "moves very rapidly 

 by firm beats of the valves and can thus spring almost a loot each time; I have never seen it use 

 the foot". 



