16 P. T. CLEVE, SYNOPSIS OF TUR NAVIOUI-OII) DIATOMS. 



StritB 16 to 17 in 0,ui mm. finely lineate and, on the keel, with coarse puncta. — KuTZ. Bac. p. 

 107 Pl. III f. 63. W. Sm. B. D. I p. 44 Pl. XV f. 124. V. H. Syn. p. 121 Pl. XXTI f. 11. 12. 



Brackish water: North Sea (Bohuslän! England! France! Bplgium V. H.). Mediterranean 

 Sea (Peragallo). California! 



Var. infermcdia Cl. — V. in L. 0,ii to O.is; B. 0,03; Height 0,025 to 0,o3 mm. Stria- 11 

 in 0,01 mm. 



Brackish water: New York! San Domingo (Witt CoU)! 



Var. pulchra Bail (If^.öO). — FnTstnle strongly constricted. L. 0,27; B. 0,i mm. Sti-i;i' 7 

 in 0,0 1 mm., on the keel with large puncta, 5 to 6 in 0, 01 mm. — A. pulrhra Bail. Smiths, ("ontr. 

 II p. 38 Pl. II f. 16, 18 (bad). V. H. Syn. Pl. XXII bis f. 1, 2, 4. 



Brackish water: Atlantic eoasts of N. America! San Domingo (Witt Coll.)! 



Var. japonica Cl. — V. in the zonal view strongly constricted. L. O, oss; B. 0, 02 mm. Junc- 

 tion-line bisinuose on each side of the central nodule. Stripe 12 in 0, 01 mm., coarsely punctate on 

 the keel. — Pl. I f. 2. 



Marine: Japan! 



The smaller forms of A. ahifa appear to graduatc into A. palndo.^a, so that there seems to 

 be an uninterrupted series of forms from the gigantic Var. maxima to the \evy ininiite A. pal. 

 var. hyalina. The Var. japonica may be regarded as a connecting link between A. alata and A. 

 ornafa. To the forms of A. alata belongs perhaps also A. hiharensis Pant. III Pl. XLII f. 577. 



4. A. conspiciia Grev. (1861). — V. linear-lanceolate, strongl}- convex. L. O.og to 0,13; 

 B. 0,02 to 0,024 mm. Median line strongly sigmoid. Junction-line indistinct. Strise 7 in O.oi mm., 

 some of them near the median line coarser, finely lineate; lineolte about 25 in 0, 01 mm. — (tRev. 

 T. M. S. IX p. 86 Pl. X f. 16 (?). V. H. Syn. Pl. XXII bis f. 3. 



Brackish water: Atlantic eoasts of N. America! Brazil! Sierra Leone (Grun), Cameroon! 



5. A. ornata Bail (1852). — Frustule membranaceous, strongly constricted. L. O.oe:; B. 

 0,05 mm. Junction-line deeply denticulate. Strite 20 to 22 in 0, 01 mm., finely punctate. — Bail- 

 Smiths. Contr. II p. 38 Pl. II f. 15 to 23. V. H. Syn. p. 121 Pl. XXTI bis f. 5." A. fhuhriata Castr. 

 Voy. Challenger p. 40 Pl. XVII f. 15 (Surirella?). 



Fresh water: Finland! Belgium (V. H.). North America (Michigan! Florida, Bail). 



6. A. cremilata Temp. (1891). — Frustule deeply constricted. L. 0,037; B. O.03 mm. Junc- 

 tion-line sinuose. Connecting zone with several longitudinal divisions, fiuely striate. Stria.' 28 in 

 0,0 1 mm. V. lanceolate, with crenulated margins (denticulations 2 in 0, 01 mm.), apiculate. L. 0,04; 

 B. 0,014 mm. Median line strongly sigmoid. Basis of the keel biconstricted. Axial and central 

 areas indistinct. Keel with transverse, punctate strite, 16 in 0, 01 mm. Lower part of the valve 

 with numeroxTS, strong, transverse lines. — Temp. Diatomiste I, p. 50 Pl. IX f. 9, 10. 



Brackish water: New Guinea! 



7. A. Kjellinanii Cl. (1880). — Frustule silicious, slightly constrii-ted. Ij. 0. i;i; R. 0.04 

 mm. Junction-line undulated or not. Strire coarser on the keel tlian 011 the valve, 12 or 13 (keel) 

 to 17 (valve) in 0,oi mm. — Cl. A. D. p. 14 Pl. IV f. 83. 



Marine: Sea of Kära! Cape AVankarema! 



Var. glacialis Cl. (1883). — Frustule not constricted. L. 0,07; R. O.oi.-, mm. Stria' II (keel) 

 to 19 (valve) in 0,oi mm. — Cl. Vega p. 477 Pl. XXXV f. 12. 



Marine: Cape AVankarema! 



Var. kariana Grun. (1880). — Frustule slightly constricted. L. 0,oo4 to 0,o7 ; B. 0,o:!r,, at the 

 constriction 0, 02 7 mm. Junction-line slightly sinuose. Striffi 10 or 11 (keel) to 17 or 18 (valve) 

 in 0,01 mm. — A. kariana Grun. A. D. p. 61 Pl. IV f. ^i. Franz Josephs L. D. p. 53 (105). 



Marine: Franz Josephs Land (Grun.). 



