224 Ehnst Osthup. 



Biddulphia suborbicularis Grün. var. arctica Øst., Øst. Ky.sl. D. 

 f. Gronl., 34;}, Tab. II, fig. 14 ^Bidd. suborb. var.). 

 Lo c. Koldewcy Isl. (.Mf^a', 1 .sanipl.). 

 Arct. Di Str. Grcenl. 



Biddulphia sp., Tab. nostr. XIII. fig. 23. 



Striis 11 in 10«, punctatis. 



Valva biddulphoidea, cornubus satis brevibus, obtusis. Facie 

 connectivali ad apicem leniter triundulata spinamqve singulam longam 

 ostendente. 



As 1 have only seen the valve in zone-view I cannot j^ive this form as 

 a new species. 



Actiuocyclus Ehr., 1840. 



Actinocyclus alienus Grun. var. arcticus Grun., CI. BafF. B. 18, 



Tab. II, figs. 11—12. 



Loc. Marg. of the Pack-ice. 



Arct. Distr. Davis Strait. East Arct. S. 



Cosclnodiscus Ehr., 1838. 



Coscinodiscus concinnus W Sm., V. H. Trt. 531 (Cose, radiatus 

 var. cone), Perag. D. mar. d. Fr., Tab. LXV, fig. 12. 

 Loc. Koldewey Isl. (.\lgæ). 

 Arct. Distr. W. Greenl.. K. of Greenl.. East Arct. S. 



Coscinodiscus radiatus Ehr., V. H. Trt. 530.; Perag. D. mar. 

 d. Fr., Tab.CXVII, fig. 3. 



Loc. Ofl'Cape Amélie (Algæ), Koldewey Isl. (Algæ), Marg. of the Pack-ice. 

 Arct. Distr. Greenl., E. of Greenl., East Arct. S. 



Coscinodiscus subtilis Ehr. var.? glacialis Grun., Grun. Fz. Js. Ld. 

 56, Tab. Ill, fig. 27. 



Loc. Marg. of the Pack-ice. 



Arct. Distr. Mouth of Yennissey (According to Grunow I.e.). 



Coscinodiscus (lacustris Grun. var.?) septentrionalis Grun., 

 Grun. Fz. Js. Ld., 33, Tab. IV, fig. 33. 



Loc. Marg. of the Ice. 



Arct. Distr. W. Greenl.. E. of Greenl., East Arct. S. 



