14 JAMES A. GRIEG. 
[SEC. ARCT. EXP. FRAM 
The largest specimens found by the Fram Expedition are up to 
41 mm. long. By way of comparison it may be stated that on the west 
coast of Greenland this species attains a size of 36 mm. (PosseEL7), on 
the east coast it can be 36.25 mm. (JENSEN) at Spitzbergen 45.5 mm. 
(KnrpowitscH) and in the Bering Sea 51 mm. (Krause). Some of the 
largest specimens measure: 
Gaaselord Long. 41. mm. Lat. 27> mm. Crass. 14.5 mm. 
— 38.5, 26.7 ,. 125 , 
Forvisningsdalen 31. 5 9 CO, 13, 
Gaasefjord ID 94.5, 138 —CO««, 
— 33.5, a 10.5 ,, 
_ 32.5 9  «, 10.5, 
Stordalen 31 3 D1 5 11.5, 
— 272 ,, 200—C«, 112 , 
Some of the specimens are characterised by their narrow and elon- 
gated form. The posterior end of the shell tapers comparatively sharply. 
This form is most frequently met with in specimens from the head of 
the Gaasefjord. On the other hand there are several specimens which 
have a remarkably high shell. The most characteristic feature in their 
case, however, is that the posterior end of the shell is more obtusely 
rounded, so that the shell’s form reminds one of ¢ellina torelli. In the 
illustrations [ have shown the two most pronounced instances of these 
forms; the 41 mm. specimen from the head of the Gaasefjord (Fig. 2), 
and the 37.5 mm. specimen from Forvisningsdalen (Fig. 3). Between 
these extreme forms there are scarcely distinguishable intermediate forms. 
Tellina, macoma, torelli, lap. STEENSTRUP. 
Locality: 
Sept. 22. 1899. The winter harbour, Havnefjord, 16 m. 
March 7. 1900. Bay south of Sjépélse Ness, Havnefjord, 30—40 m. Small stones 
slightly overgrown with laminaria. 
The two largest specimens measure: 
Long. 14 mm. Lat. 10.5 mm. Crass. 5.7 mm. 
13.7, 10.5, 5.5, 
These specimens are thus slightly larger than the biggest living 
specimens which Jensen has investigated (13.5 mm.). Their form is 
almost exactly similar to the fossil shells from Vendsyssel which he 
has depicted (tab. 1, fig. 3 f—). 
