330 



shining silvery white or pearly. The height is 15 mm., the 

 length 9'5 mm. and the breadth 9 mm. 



1900. Fleming-Inlet... 118 fms. Clay 1 specimen. 



1900. Forsblad-Fjord . . ca. 50 — Clay with stones 1 — 



1900. Forsblad-Fjord .. 90— 50 — Clay with stones 12 — and 14 valves. 



This new species may be distinguished from Limatula 

 elliptica Jeffreys ^) with which it has some resemblance, by 

 the following characters: the shape of the shell is higher, the 

 ventral margin forms with the side-margins a steeper arch, the 

 radial ribs are sharp and not serrate. L. subovata Jeffreys ^) is 

 also a nearly related species, but it has much more numerous 

 radial ribs (50 — 60) and is still more ventricous. 



This new species not only lives at the northern East-Green- 

 land but also at Spitzbergen and in the Kara-Sea of which 

 I have convinced myself in the «Riks-Museum» in Stockholm^). 

 It is probable that it also lives in the Barents-Sea and in the 

 cold Arctic-Sea where «L. subovata Jeffr.» is said to have been 

 taken in several places, according to Frie le & Grieg ^), it 

 being very probable that L. subovata has been confounded with 

 the present new species. The same probably holds good with 

 regard to и Lima elliptica Jeffr.» which was taken by the Dutch 

 expedition in the Barents-Sea at 130 fms., as Nom an n^) states 

 the maximum size to be 11 mm. length and 18 mm. height, a 

 size which, as far as I know, never is obtained by L. elliptica, 

 but would correspond very well with the present new species. 

 The Ingolf-Expedition has taken very large specimens up to a 

 height of 20 mm. of L. hyperborea (S. of Jan Mayen, 37 I fms.). 



M Brit. Conchol. II, 1863, p. 81. 



2) Ann. Mag. Nat. Hist. (4) XVllI, 1876, p. 427. 



^) The specimens from the Kara-Sea were by W. Le che referred to Lima 



sulculus (Leach) Lov. (Kongl. Sv. Vet. -Akademiens Handl. Bd. 16, Nr. 2, 



1878, p. 34). 

 *) Norw. North-Atl. Exped. ZooL, Mollusca, III, 1901, p. 7. 

 5) Niederländ. Arch. f. Zoologie, Suppl.-Bd. 1, 1881—82, Nr. 10, p. 4. 



