26 



Ligesom astarte compressa er den en norclatlautisk art. 

 Den synes dog at have en sj-dligerc udbredelse, idet den 

 gaar ned til de Canariske oer, Nordafrikas vestkyst og 

 Middelhavet, hvor den dog er meget sjelden. Dens ud- 

 In-edelse kan for tiden ikke med sikkerhed angives. Den 

 batliynietriske udbredelse er 5 — 1010 fv. Fossil er den 

 kjendt fra Norge, nordlige Rusland, England, Praid^rig, 

 Italien og Sibirien. 



This, like ^4. coiiqiressd, is a Noith Atlantic species. 

 It appears, however, to have a more southern distribution, 

 as it extends to the Canary Isles, the north-west coast of 

 Africa, aud the Mcditorrancan, where, however, it is very 

 rare. For the present its distrilnition cannot be definitely 

 given. Its batliymetrical distribution is from 5 to 1010 

 fathoras. It is found as a fossil in Norway, the north of 

 Russia. England, France, Italy, and Siberio. 



Astarte compressa, Linué. 



Venus compressa, Linné, Syst. Nat., ed. 12, 17(i(j. p. 1135. 

 Astarte elUptica. Forbes & Hanley, Brit. Moll., vol. 1, 1853, p. 459, Pl. 30, fig. 8. 



— compressa, G. 0. Sårs, Moll. Reg. Aret. Norv., 1878, p. 53. 



— — Leche. Kgl. Sv. Vetensk. Akad. Handl., vol. 10. no. 2, p. 18, Pl. 



1, fig. 2, 3 a— b. 



Astarte compressa blev af Nordhavsex])editionen kun 

 tågen ved Alten og Hammerfest, 20 fv. Den horer hjemme 

 i det nordlige af Atlanterhavet og tilstødende dele af Is- 

 havet indtil Karahavet. Sydgrænsen er ved de britiske 

 oer og Østersoen, hvor den forekommer indtil KielerbugteQ 

 og Bornholm. Paa den amerikanske side gaar den mod 

 syd til Massachusetts. Ved den norske kyst er den særlig 

 talrig inden den arktiske region. Den bathymetriske ud- 

 bredelse er 5 — 200 fv. Fossil er den kjendt fra Skandi- 

 navien, Britiske oer, Island, Spitsl»ergen, nordlige Rusland 

 Oii Siliirit^n. 



Astarte compressa was found by the North Atlantic 

 Expedition only at Alten and Hammerfest (20 fathoms). 

 It is a native of the northern part of the i\tlantic, and 

 the adjoining portion of the Arctic Ocean as far as the 

 Kara Sea. Its southern limit is at the British Isles and 

 the Baltic, occurring in the latter down to Kiel Bay and 

 Bornholm. On the American side, it extends as far south 

 as Massachusetts. On the Norwegian coast, it is especially 

 numerous witiiin the arctic regions. Its bathymetrical 

 distribution is from 5 to 200 fathoms. It is found as a 

 fossil in Scandiiiavia, the British Isles, Iceland. Spitsbergen, 

 the north of Russia. and Siberia. 



Astarte banksii, I^each. 



Nicania hanksii, Leach, Ross's tirst Yoyage, App. 1819, j). 17(5. 



Astarte — Gould & Binney, Rep- Invert of ]\Iass., 1870, p. 125, 



Nicania — G. O. Sårs, Moll. Reg. Aret. Norv.. 1878. p. 51, Pl, li, fig. 1 a— b. 



Den typiske form af denne stærkt varierende musling 

 toges ved Hammerfest og Alten. 



Forma glohosa erholdtes paa station 225, 195 fv,, og 

 forma ivarhami ved Advent Bay og Magdalena Bay, 20 

 —60 fv. 



Astarte hanhsil er en circumpolar art, som er kjendt 

 fra Grønland, Amerikas nord-østkyst indtil kysten af New 

 England, Vesteuropa indtil Biskayerbugten. Skandinavien, 

 Ustersoen indtil Kielerlnigten og Fehmeru, Murmankysten, 

 Island, Jan Mayen, Spitsbergen, Barentshavet, Karahavet, 

 Sibiriens ishavskyster, Beringshavet og Vancouver. Ved 

 de norske kyster er denne art meget almindelig, den liøi- 

 arktiske form warliami dog blot fra Syd- Var anger og forma 

 (jlohosa fra Finmarken og Tromsø. Den bathymetriske 

 udbredelse er 5—200 IV. Fossil er den funden i Skan- 

 dinavien, Britiske øer, Spitsbergen, nordlige Rusland, Silti- 

 rien. Nordanierika 02; Gronland. 



The typical form of this exceedingly variable bivalve 

 was found at Hammerfest and Alten. 



The form (jh)liosa was found at Station 225 (195 

 fathoms), and the form irarhaini in Advent Bay and Mag- 

 dalena Bay (20—60 fathoms). 



Astarte hanhsii is a circumpolar species. known in 

 Greenland, on the north coast of N. America and east coast 

 down to New England, oft' the coast of Western Euro])e as 

 far south as the Bay of Biscay, Scandinavia, in the Baltic 

 down to Kiel Bay aud Fehmarn. off the Murinan Coast, 

 Iceland, Jan Mayen, Spitsbergen, in the Barents Sea, the 

 Kara Sea, on the arctic coasts of Siberia. in the Bering 

 Sea, and Vancouver Island. This species is very comuuju 

 off the Norwegian coast, the high-arctic form, warhami, 

 howL-ver, only in South Varanger, and glohosa in Finmark 

 and Tromsø. Its bathymetrical distribution is from 5 to 

 200 fathoms. It is found as a fossil in Scandinavia, the 

 British Isles, Spitsbergen, the north of Russia, Siberia, 

 Nortli America, and Greenland. 



