478 



CLEVE, DIATOMS. 



Length 0,07 mm.- Breadth 0,oi5 mm. — Cape Waukarema. 



Perhaps a variety of the following. 



A. (Amphitropis?) striolata Grun. (A. Diat. pag. 62, PL IV, 

 fig. 81) Kara. 



A. (Amphitropis?) hariana Grun. (A. Diat. pag. 61, PI. IV, 

 fig. 82) Kara. 



A. (Amphitropis) decussata Grun. var. septentrionalis Grun. 

 (A. Diat. pag. 63, PI. V, fig. 87) Finm., Cape Wankarema. 



Specimens from Wankarema are very large, 0,i4 — 0,i8 mm. in 

 length, and have 20 — 22 strise on the valve. Median line sigmoid. 



7. Amphipleureae. 



BerMeya Billwynii Grun. (Van Heurck Syn. PI. XVI, fig. 

 15) Spitsb., Kara, Cape Deschnew (East Cape) (strise 24 in 0,oi mm). 



8. Nitzschieae. 



Sectio: TryMionella. 



N. TryUionella Hantzsch. (Grun. A. Diat. pag. 69) var. 

 Victories Grun. — Kara. 



var. levidensis W. Sm. — Finm., Kara. 



N. navicularis (Breb.) Grun. (Trji-bl. marginata Sm.) Spitsb. 

 — I have indicated this species in the D. of the A. S. as an 

 inhabitant of the Arctic Sea, but not having afterwards found 

 it, I am uncertain as to the exactness of the determination. 



N. (?) seriata CI. N. Sp. — Fusiform with gradually attenua- 

 ted ends. Puncta indistinct. Strise 16 — 18 in 0,oi mm. per- 

 vious. Frustules coherent in long bands. Length 0,09— 0,ii 

 mm. Breadth 0,oo8 mm. — PI. 38, fig. 75. — Greenland, Tindin- 

 gen (N. 0. Hoist). 



I am very uncertain as to the exact position of this dia- 

 tom, whose nearest allies seem to be N. ? (Homoeodadia) pungens 

 Grun. Mpt. (CI. & Moll. Diat. No 307) from Japan, also the 

 Fragilaria (?) Cylindrus Grun. Mpt. 



Sectio : Panduriformes. 



N. panduriformis Greg. var. delicatula Grun. (A. Diat. pag. 

 71, PI.' V, fig 92) Finm., Spitsb. 



N. constricta Klitz. In the Diat. of the Arctic Sea I 

 have indicated this species as occurring near Spitsbergen, but 

 I cannot be sure of the correctness of the determination, not 

 having found it afterwards. 



