244 KitNST Om III 1". 



Broviatrialœ CI., 1895. 

 Pinnularia parva (Klir.) Greg. var. Lcujerstedlii CI., Cl. Syn., II, 

 87, Lgsl.; Spl)., Tnl). II, lig. 4 (Nav. paivula) 



Loc-, Dovc Hiiut. Lille Snenæs. 

 .\rc-l. Distr. Spb.. H. I-:i. 



Amphora Ehr., 1840. 

 Subgcn. Amphora Cl., 189.5. 

 Amphora ovalis Külz var. libyca Ehr., Cl. Syn., II, 104; V. H. 

 Tri., Tab. I, fig. 17 (Amph. oval, affinis). 



Loc. Oil" Cape Amélie (Al«æ), Koldewey Isl. (Algæ). 

 Arct. Distr. W. Grccnl., H. of Greenl., S])b. 



IVl O no raph ideæ. 



Coccoueis (Ehr., 1835) Grun., 1868. 

 Subg. Cocconeis Cl., 1895 pro gen. 

 Cocconeis Pediculus Ehr., Cl. Syn., II, 169; A. S. All., Tab. CXCII, 

 fig. 61. 



Loc. Koldewey Isl. (Alf»æ). 



Not before recorded from Arctic regions. Several other records. 



Cocconeis Placentula Ehr. var. euglypta, CI. Syn., II, 170; V. H. 

 Syn., Tab. XXX, figs. 33—34. 



Loc. Danmarks Havn (Algæ). 

 Arct. Distr. P'z. Js. Ld. 



Subg. Eucocconeis Cl., 1895 pro gen. 

 Cocconeis flexella Kiitz. Cl. Syn., II, 179; V. H. Trt., Tab. VIII, 

 fig. 322 (Achnantidium flexell.). 



Loc. Hvalrosodde, Lille Snenæs. 

 Arct. Distr. E. Greenl., Spb., B. El. 



Cocconeis flexella Kiitz. var. intermedia var. nova. Tab. nosl XIV, 

 fig. 12. 



Long. 38^/7. Lat. 14/^. Str. media in valva 22 in 10;/, apices 

 versus densioribus. 



Epitheca : Area centrali subqvadrata, satis magna. 



Hypolheca : Raphe sigmoidea, area angusta hyalina, media in 

 parte valvæ in aream centralem acuminatam dilatata, cincta. 



Loc. Hvalrosodde. 



Especially on account of the subquadrate area of the epitheca I think 

 this form may be intermediate between Coccon. flex, and Coccon. maxima 

 forma minor. As I have not seen the epitheca and the h^'potheca separated, 

 but only in situ I have indicated in m}' figure of the hypotheca the ex- 

 tent of the central area of the epitheca. 



