69 



Scotland, Norway, Sweden and Finland. Mr. James Murray 

 advised me, that outside the reports af Daly ell and All- 

 mann no knowledge had been gained as to their distribution 

 in Scotland. Prof. G. 0. Sars informed me that in the vicinity 

 of Christiania he had met with Plumatella repens (fairly com- 

 mon) Cristatella (only in one locality) and probably also with 

 Fredericella; otherwise nothing was known at to their distri- 

 bution in Norway excepting from Krapelins reports. Ekman 

 writes me that Bryozoa are not known to occur in Swedish 

 Lapmark; at the same time he reports Cristatella, Plumatella 

 repens (?), Plumatella fungosa, and Paludicella as having been 

 found in Sweden, however their utmost boundary lay just to 

 the north of the great Swedish lakes. Le van der reports that 

 hitherto Paludicella, Fredericella, Cristalla, Plumatella repens, 

 fruticosa, fungosa and punctata have been found in Finland. 

 With the exception of P. repens which is said to be generally 

 distributed throughout the southern and central parts of Fin- 

 land, the other forms have only been found in some few lo- 

 calities in the southern part of the country^. 



As the above shows Ad. Jensen's find is of no small 

 interest, it extends the northern limits of the Bryozoa from 

 60" N. to 70° N. and is the means of bringing about an 

 agreement in the distribution of the Bryozoa towards the north 

 and their occurence in Alpine lakes, in the abyssal region 

 of lakes in low countries as also their distribution in pre- 

 historic times. 



It is worth while to notice that the form, which according 

 to the common evidence of present observers in more tem- 

 perate latitudes seems to thrive best at the lowest temperatures: 

 Fredericella sultana (Zschokke a. o., see above) so far like- 

 wise proves to be the dominant form towards the north. Knowing 



' 1 beg to express my best thanks to each of the above mentioned scientists 

 for their kindness in thus having placed their knowledge at my disposal. 



