Ad. s. Jensen: The Selachians of Greenland. 7 



addition to at south-west Greenland it occurs commonly on the banks ofT Nova Scotia 

 and New England, in depths of 150 fm. and more. On the European side of the 

 Atlantic it was taken in 1902 by the Norwegian research-steamer "Michael Sars" both 

 south-west of the Færoes at a depth of 425 — 460 fm. and north-west of the Hebrides 

 at a depth of 580 fm. Further, Vaillant^) refers a small Spinax (175 mm in length), 

 which was taken on the Arguin Bank (N. Africa, S. of Cape Blanco) at a depth of 

 787 fm., to this species, but as the specimen was in a very bad state of preservation, 

 the Identification must be treated with caution^). 



Squalus acanthias Linné. 



English: Picked Dogfish. 



Danish : Pighaj. 



West Greenland. After J. H. Reinhardt with right had remarked, that the 

 shark ''Squalus acanthias''^ recorded by Fabricius as occurring in Greenland could 

 hardly be identical with Linné's species of the same name (cf. under Centroscyllium 

 Fabricii p. 5 — 6), the common Picked Dogfish has been deleted from the Green- 

 land fauna, Nevertheless, the Copenhagen Zoologicai Museum contains from earlier 

 times some examples of Squalus acanthias L., namely, an embryo marked "Greenland"-') 

 and the body skeleton of a smaller specimen sent from Greenland by the physician 

 Pfaff; but these witnesses to the occurrence of the Picked Dogfish at Greenland 

 have not been recognized for the reason, that both were erroneously referred to 

 Centroscyllium Fabricii. 



From more recent times, moreover, we have quite certain records of three Picked 

 Dogfish from Greenland. In the year 1885 the then colonial governor, Lytzen, for- 

 warded a female specimen 870 mm long from Sukkertoppen. Later, in the winter 

 of 1903 — 04 a specimen ca. 780 mm long was stranded at Sarfanguak south of Holsteins- 

 borg; it was not preserved, but the dorsal spines were sent to the Museum by R. Muller. 

 Finally, the Museum has received from the colonial governor L. Bistrup a female speci- 

 men 940 mm long, taken on August 28th 1905 at Sukkertoppen ; immediately after cap- 

 ture it gave birth to 3 embryos 290, 290 and 285 mm long. 



From this it is evident, that the common Picked Dogfish may occur at Greenland. 

 Yet it probably belongs to the rare guests and it seems to occur mainly in the districts 



*) Expéd. scient. du Travailleur et du Talisman, Poissons, 1888, p. 72. 



2) C. T. Regan is inclined (Ann. Mag. Nat. Hist., (8), 2, 1908, p. 41) to regard Centroscyllium 

 granulosum Gunther and C. ritteri Jordan & Fowler as identical with C. fabricii Reinhardt; 

 in this case its distribution would be extended to Falklands and Japan. 



*) This embryo was sent down in the year 1823 already by Inspector Holbøll of Godthaab 

 and thus probably came from this district of Greenland. 



