VEG A-EXPEDITIONENS VETENSKAPLIGA ARBETEN. 505 
published by Greville I cannot be sure of the identity. The 
valve was 0,072 mm. in length and 0,005 mm. in breadth. Strix 
13 1/3 in 0,01 mm. — Pl. 35, fig. 2. 
Amphora ostrearia Bréb. (A. S. At. Pl. XXVI, fig. 23). 
ÅA. crassa Greg. (A. S. Atl. PI. XXXIX, fig. 30). 
+ AA. cymbelloides Grun. (Hedw. 1867, VI p. 24, Cl. & M. 
D: No 147). 
+ Navicula Apis Donk. (A. S. Atl. XII, fig. 23). 
FUN sAdbeng ARISTA (BISVIET Hon29 
N. aspera Ehb. (A. S. Atl. XLII, fig. 26). 
N. brasiliensis Grun. var.? — L. 0065. Br. 0,03 mm. Str. 
14 in 0,01 mm. 
= N. consors A. S. (Atl. P1. XLVIII, fig. 24—27). 
N. circumsecta Grun. (A. S. Atl. PI. III, fig. 27): 
N- direeta Sm. var.? (A. S Atl. Pl. XLVII, fig: 12 and 1. 
ce fen 13) 
= N. Leudugeri Ol. N. S. — Elliptic; med. line straight. Strixe 
radiant, coarse, 8 in 0,01 mm., composed of 3 to 4 large elon- 
gate and transversely lineate puncta, reaching to the med. line, 
except in the middle, where they are shortened. &L. 0,07 mm. B. 
0,016 mm. This species resembles N. guttata Grun (A. S. At. 
PI. XLVTI, fig. 10) but is not so convex and has different end- 
pores. — Pl. 36, fig. 22. 
NER fktiNiSTAR Si (ART P1. IE) Gert vtoy: 
+= N. formosa Greg. (A. S. Atl. Pl. L, fig. 9—10). Str. 15 
in 0,01 mm. LL. 07085 mm. Br. 0018 mm. 
= N. fluminensis Grun. (A. D. p. 28). L. 0,07 mm. Br. 0,0: 
NN. Sit. TRO DAN 
N. gemmatula Grun. (A. S. Atl. Pl. XIII, fig. 21). 
N. Henmnedyi W. Sm. (A. 8. Atl. Pl. III, fig. 17—138). 
N. mdica Grev. (TI M:S: Il pag: 95, PI IX fig: 13). 
N. laerimans A. S. Atl. (P1. XII, fig. 61). 
N. Lyra Ehb. var. 
NE Museo, Gres(AFSINIDE PITT, fig. 15): 
N. maxima Greg. var. — A very large form with somewhat 
inflated middle and subceuneate ends. Length 0,16, breadth 
0,017 mm. Strie 20 in 0,01 mm. at the ends and in the middle. 
N. malticostata Grun. (A. S. Atl. P1. XI, fig. 14—20). 
N. mnitescens Greg. (A. S. Atl. Pl. VII, fig. 37—41). 
N. notabilis Grev. (A. S. Atl. P1. VIII, fig. 46). 
= N. micobarica Grun.— Only one specimen, perfectly agreeing 
with a figure sent by Mr. Grunow but not with the fig. given 
in AA. Schm. Atl. Pl: VIL fig. 57 and LXX, fig.:35,; 36. The 
