74 



THE DEPOSITS OF THE SEA-BOTTOM. 



of the north coast of Iceland, where almost no other Foraminifera are met with, while, on the other 

 hand, they are wanting in all the specimens between Iceland and Jan Mayen, where the Truncatulinse 

 were found in so very great numbers, excepting close at the coasts of the two islands, where they 

 occur in some quantity. A few of them are also found north of the Faroe Islands, while, with very 

 few exceptions, they are wanting in the whole southern territory. The genus Nonionina has been 

 found in a few specimens on all sides of Iceland, but always only in small quantities. 



The distribution of the genus Haplophragmium is especially characteristic, it being, with the 

 exception of one individual between Iceland and Greenland, only found in the territory north of Ice- 

 land and the Faroe Islands, but there, in return, in very great numbers; it has almost the same 

 distribution as the Truncatulinae , what is also the case with the nodosarine Foraminifera, which are 

 found in numerous specimens in this territory, but always only in small numbers. The genus Cristel- 

 laria has only been found in a few individuals between Iceland and Greenland, and southwest of Ice- 

 land; the genus Textularia partly in the same territory, but in some of the specimens in greater 

 numbers; thus in the specimens no. 85 and no. 89, west of Iceland, it is found far more numerous 

 than any of the other Foraminifera. The genus Rupertia has a rather peculiar distribution in two 

 separate regions ; thus it is found in three specimens southeast of Iceland, where, especially in no. 46, 

 it occurs in far greater quantity than any of the other genera; further in two specimens between 

 Iceland and Greenland, where in one of them, no. 62, it is also predominant Finally the sandtube- 

 Foraminifera of the genus Hyperammina have to be mentioned; they have only been found in three 

 specimens at the west coast of Greenland, where, with a single exception, no one of the other For- 

 aminifera has been found. The minerals found in the tubes, are the same as those found in the spe- 

 cimens, that is to say, almost exclusively quartz; as the nature of the minerals is rather identical 

 over this whole territory, we have no means of deciding, whether these Foraminifera may have been 

 formed on the same place where they are now found, or perhaps may have been subject to some 

 kind of transport, which latter supposition, however, would beforehand seem rather improbable. 



II. Other calcareous Organisms. 



The higher animals with calcareous shells are not by far so conspicuous in the specimens as 

 the Foraminifera, but are nevertheless sometimes met with in not quite inconsiderable quantities. 

 Sometimes only quite indeterminable fragments of shells are found; most frequently, however, it is 

 possible to recognize the fragments; the shells are more rarely found whole, and then they are always 

 of small individuals or species. In the following table I note the animal forms whose calcareous 

 shells have been found in the specimens, but without any attempt at determining genera or species. 



Stations 2 — 4; no calcareous shells. 



Station 6; a few fragments of Lamellibranch shells and Echini spines. 



Station 7; no calcareous shells. 



Station 8; a few fragments of Lamellibranch shells. 



Stations 9—12; no calcareous shells. 



