Lima sars/i forekommer sparsomt langs vor vest- og 

 iiordkjst op til Vadsø, men synes ganske at mangle langs 

 svdkysten. Arten er desnden funden langs Leie Europas 

 vestkyst samt i Middelhavet og ved St. Helena. Den 

 liathyraetriske udbredelse er 50—1417 fv. Fossil er den 

 kjendt fra Sicilien og Khodes. 



Lima sarsil occurs sparingly along the west coast of 

 Norway, and the nortii coast up to Vadso, but seenis to 

 be altogether absent from the sonth coast. The species is 

 found. moreover. along the entire west coast of Europe. 

 in the Mediterraneau, and at St. Helena. Its bathymetrical 

 disti-ibntion is from 50 to 1417 fathoms. It is known as 

 a fossil in Sicilv and Rhodes. 



Pecten fragilis, Jeffreys. 



Fecfen frar/ilis, Jeffreys. Ann. & Mag. Nat. Hist. ser 4. vol. 18. I87ij. p. 424. 

 — — Jeffreys, Proc. Zool. Soc. 1879, p. 591. Pl. 45. fig. 1. 



Findested. Stat. 35, 40. 51, 53,'96, 205, 240,248, 

 295, 303. 312, 353. Dybde n58— 1539 fv. 



De største exemplarer var iudtil 25 mm. lang, 23 

 ram. bred. 



Denne ægte dyl)vandsform hører hjemme paa de store 

 oceandyb mellem Spitsbergen og Grønland i nord og Cape 

 Hatteras og Senegambien i syd. Den bathymetriskc ud- 

 bredelse er 658 — 1785 fv. 



Locality. Stations 35. 40. 51. 53. 96. 205. 240. 

 248, 295, 303. 312 and 353. Depth 658—1539 fathoms. 



Tlie largest specimens were as much as 25 mm. in 

 length, and 23 mm. in breadth. 



This true deep-water form inhabits tlie great ocean 

 depths between Spitsbergen and Greenland to the north, 

 and Cai)e Hatteras and Senegambia to the soutli. Its 

 bathvnn'trical distribution is from 658 to 1785 fithoms. 



Pecten imbrifer. Lovin. 



Feden iiiihrifer, Loven. Ind. Moll. Scand., 1846, ]>. 31. 



— Jiosl^i/nsi. G. 0. Sårs, Moll, Reg. Aret. Norv.. 1878, p. 30. Pl. 2. fig. 1 a- 



-c. 



Verrills beskrivelse af njclopecfeu pustnhisiiii i sit ar- 

 beide over familien jicctiniiJa^'') stemmer i det store hele 

 overens med den nordeuro])æiske jiecfeu imbrifer, Luren, dog 

 er hos den amerikanske form de radierende ribber paa 

 venstre skallet mere faatallige. Dette byder imidlertid neppe 

 noget fuldt tilfredsstillende artsniærke, hvorfor vi maa anse 

 den nordamerikanske form identisk med den europa^iske. 

 Verrills tegning (tab. 19. fig. 3. 4) kan vi dog vanskelig 

 bringe i overensstemmelse med hans tidligere af pecfcn 

 pHstiilosas. Hans ci/clopecfen sahi>iihrifer (p. 84). som han 

 i tiiUiizeit' arbeider har identificeret med den nordeuropæiske 

 art. turde derimod være forskjellig fra denne. 



Findested. Stationei^ne 48. 164, 192. 237, '2&2. 270. 

 290. 323, 357. Dybde 125-649 fv. 



De hoiarktiske exemplarer udmrerker sig fra de ved 

 den norske kyst forekommende ved sin størrelse. Medens 

 disse ikke bliver mere end 1 1 nirn . var exemplarer. som 

 maalte 20 ram., ikke sjeldne blandt hine. Et 20 mni. langt 

 exemplar fra stat. 237 nærmede sig meget den af Posselt 

 i Conspectus Fauna Groenhmdicæ ;p. 13, tal). 1. fig. 1) 

 Iteskievne varietet laiiielhisa. 



M Trans. Coniieolicut Aoad.. vol. 10, 1S-9T, p. 83. 



VerrilTs description of Cyclopecteii jiasfiiJijsas, in his 

 work on the Pectinidæ faniily'), agrees on the whole witli 

 the Nortli European Fecfen imbrifer. Loven, although the 

 radiating ril)s on the left valve in the American form are 

 fewer in nuraber. This, liowever, scarcely constitutes an 

 altogether satisfactory specific feature, and we raust thei-e- 

 fore regard the North American form as identical with the 

 European. AVe have sorae difficulty, however. in nniking 

 VerrilFs drawing (Pl. XIX, figs. 3, 4) agree with iiis earlier 

 one of Fecfen pusfidosiis. On the other hand. his Ci/cJo- 

 pecfen subimbrifer (p. 84), whieli, in earlier works, he has 

 identified witli the North-Euroj)ean species. possibly differs 

 from it. 



Locality. Stations 48. 164. 192. 237, 262, 270, 290, 

 323, and 357. Depth 125-649 fathoms. 



The high-arctic si)ecimens are distinguished from those 

 occurring on the Norwegian coast by their size: for whcreas 

 the latter do not attain more than 11 mm., specimens 

 measnring 2(1 mm. were not uncomraon among the former. 

 One of these, measuring 20 mm. in length, from Station 

 237, bore a great resemblance to the variety JameJlosa, 

 described by Posselt in ,.Conspectus Fauna GruMdandica 

 (p. 13, Pl. i, fi,g. 1). 



•) Traus. Connecticut Aoail., vol. 10, 1897, p. 83. 



