246 Ernst Østrup. 



Brachyraphideæ. 



Euuotia Ehr., 1837. 

 Eunotia Arcus Ehr.; V. H. Tit., 299, Tab. IX, fig. 362. 

 Loc. Hvah'osodde, Vester Elv. 

 A ret. Bist г. W. Greenl., E. Greenl., Spb. 



Eunotia Arcus var. bidens Grün.; V. H. Trt., 1. с, fig. 365. 

 Loc. Hvalrosodde. 

 Arct. Distr. E. Greenl. 



Eunotia Arcus var. hybrida- V. H. Syn., Tab. XXXIV, fig. 4. 



Loc. Hvalrosodde. 

 Arct. Distr. E. Greenl. 



Eunotia Arcus var. minor Grün.; V. H. Trt., 1. с, fig. 363. 

 Loc. Hvalrosodde. 



Not before recorded from Arctic regions. "Cum specie hinc inde" (De 

 Toni Sylt., p. 791). 



Eunotia Arcus var. uncinata Grün.; V. H. Trt., 299, Tab. IX, 

 fig. 364. 



Loc. Vester Elv, Basiskæret, Nostoc. 

 Arct. Distr. W. Greenl. 



Eunotia Diodon Ehr.; V. H. Trt., 303, Tab. XXX, figs. 829— 830. 



Loc. Hvalrosodde. 



Arct. Distr. \V. Greenl., E. Greenl., Spb. 



Eunotia divisa Hérib. var. arctica var. nova. Tab. nost. XIV, 

 fig. 13, cf. Hérib., Diat. foss. d'Auv., III, 1908, 35, Tab. XIV, fig. 4. 



Long. 44 /^. Lat. 1 /i. Str. 15 — 17 in 10// sub apices, ceterum 

 irregulariter distributis, 



Valva margine dorsali curvata margine ventrali recta, apicibus 

 rotundatis, marginem ventralem versus leniter incurvatis. 



Loc. Off Cape Amélie (Algæ). Only a single specimen found. 



The present variet}^ differs from the main species especially by its 

 irregularly arranged striæ. Otherwise it agrees well with the figure by Héri- 

 baud referred to above, but is somewhat smaller. It maj' perhaps be con- 

 sidered as only an abnormal specimen of the main species, which is a fos- 

 sil recorded from "Depot de Fraisse-Bas" (France). 



Eunotia Faba (Ehr.) Grun.? \ar. densestriata Øst., Øst., Danske 

 Dial., Tab. V, fig. 107. 



Loc. Vester Elv. 



Not before recorded from Arctic regions. Other record, Denmark. 



The present form is somewhat larger (18 /а) than the Danish specimens 

 (14^1) and — as far as 1 can see — is also somewhat more coarsely striated 

 (16 striæ in 10 /jt, as compared with 20 in 10//.); but as the striæ can be seen 

 only wdth great difficult}-, the}- may after all be identical. 



