KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 48. N:o 1. 23 
("?/10 1861). — Ulfsfjord, 25—50 fms, 2 sps, max. 1. 6.6. — Grötsund, 4 fms, shellsg, 
and ebb, many sps, highly varying: max. 1. 22.1; br. 16.1; h. 6.5; another sp. 1. 
Asset brio lisa; oh v6P;Ror 1; 165 bry lle;s hh 56 (Fig. 6). — Finmark, without: de- 
finite” locality, many sps, max. ll. 21.4 (Lovén); D:o, 6 sps, max. 1. 25.8 (Sparre 
Schneider). 
Murman coast and Kola Peninsula: Gawrilowo, 1 sp., 1. 23.3 (Herzenstein 1880). 
— Waideguba, a few sps, max. 1. 13.6 (Sandeberg !?/s 1877). — Lumbowski, 20 fms, 
NÖESPs max. di 23.81 (SI, /sy 18), — Ladigino, 13 sps, max. 1. 30.6 (S. '/s 1877). — 
Orafjord, 100 fms, 4 sps, max. 1. 17.3 (S. ”/+ 1877). — Russian Lapland, Schuret- 
skoja (Lilljeborg) 6 sps, max. 1. 12.4 (Mus. U.). 
Nova Zembla and Kara Sea (LECHE 1878): max. 1. 23.7 (Cape Grebeni, living). 
ZISpitzbergen; Bel Sound, 8—12 fms, 1 sh., I. 14.5; br. 10.6; h. 5.g (Fig. 4); 
probably mistaken for Iceland. 
Iceland (ODHNER 1910): Berufjord, max. 1. 28; Raufarhofn, max. 1. 12.2; Sigla- 
fjord; max. In24:2 (Figs. 2—3). 
Greenland (POosSsELT & JENSEN 1899): some measurements: Norsovak, max. 1. 
18.8; Nivakfjord, max. 1. 28.8 (Fig. 7); Egedesminde, max. 1. 23.2; Ritenbenk max. 1. 
23.2; Godhavn, max. 1. 25; Claushavn max. 1. 19.3; Sukkertoppen, max. 1. 24.8 
(Fig. 5); Godthaab, 1. 8; Omenak, max. 1. 23.5. — Further: Pröven, 20—40 fms, 
rocks, 1 sp., 2 shs, max. 1. (sh.) 20.2. — Cape Dudley Digges, 30—40 m, mud, 1 sh., 
1. 26.1 (E. Nilson "/7 1894). — 6456 N. 6618 W., 15—30 m, sand, 1 sp., 1. 12 (E. 
Nilson !-!3/;:, 1894). 
Behring Sea: St. Lawrence Island, 1—4 fms, sand, 10 sps, max. 1. 21; br. 16; 
h. 5.8; apex 6.6 (Vega Exp. '/s 1879; AURIVILLIUS 1887). 
Limits of formal variation: 
Scandinavia, 1. , 10—12 | 14—16 | 18—20 22—24 | 26—28 | max. 25.8 (Finmark) 30.6; 30.4 (Kola) 
Murman coast, br. | 6.8—9.8 | 9.6—12.8/12.7—16 |15.8—19 |19.5—21.5| 19 22.7; 22.9 
Kola; 65 sps h. | 2.6—5.4 | 3—6.6 5—8 6:4—10;51n8.2—11.5 8 13; 14.4 
measured apex! | 2.2—4 | 3:14 4:4i | 46:41 | 44=—9:20 1 0 810) | RER | 8:5;, 1052 
1. | 10—12 | 14—16 | 18—20 | 22—24 | 26—28 | max. 28 (Berufjord) 
Iceland; br. | 7.3—9.2 |10.2—12.2! 13—15.8| 16—18 4/18.2—20 20 
15 sps hp. (844 Eee NEN ge | 805 SBN | 11 
measured apex! b2 332 Före =513 tös resa klsbesis UL > Bl 
15 10=12) | H4=16 | 18-20 | 22=—941) 26—28 | 28.8 (Nivakfjord) 
Greenland; br. | 7—9.2 | 10—12.4 12.2—16.2 16.3—19.5|18.8—23.2| 22.5 
35 sps h. |, 3—44 | 4.4—6.2 | 5.2—7.8 | 6.2—10' | 8.2—11 || 10 
measured apex | 33.8 | 3:7—5.5 | 5:2—7:6 1—9:6' || 9:2—11.8 12 
Colour variations: forma tesselata MÖLLER 1776: colour marbled with brown 
and white (typical); atropurpurea Lovén 1846: colour dark purplish, Bohuslän; alba 
LOovÉN 1846, lactea JEFFREYS 1865: colour white, Bohuslän, Denmark, England; pallida 
VERKRUZEN 1872: colour white to reddish brown »without the longitudinal rays of the 
typical species», Iceland. 
! Perpendicular distance from apex to anterior margin. 
