170 p. T. CLEVE, SYNOPSIS OF THE NAVICULOID DIATOMS. 



Var. cughipta Ehb. (1854). — L. O.oae; B. O.017 mm. Striffi of the nppei' valve crossed by 

 4 to f) longitudinal, blank bands. Striae of the lower valve 19 in 0,oi mm. — C. eiigl. Ehb. M. 

 (I. XXXIV A. f. 2. V. H. Syn. XXX f. 33. 34. Grun. Franz Josefs Land Diat. PI. I f. 3. 



Fresh water: Franz Josefs Land (Grrun.), Belgium (V. H.), Mexico! Tasmania! Australia 

 (Daintree Rivei')! 



4. C. Sciitelluin Ehb. (1.S38). — Outline liroadly elliptical. Upper V. with coarse puncta 

 arranged in transvei-se rows, usually ending at the margin in an elongated or triangular, finely 

 punctate space, and in longitudinal, usually straight and e([uidistant, rows. Lower V. delicate 

 with a marginal, frequently loculiferous, rim or line. Median line straight, ('entral nodule 

 roujuled or stauroid. Strife radiate, becoming obsolete towards the median line, finely punctate. 



Var. f/cnnina Cl. — L. 0,04 5 to o,o6; B. 0,o3 to 0,o4 mm. Upper V with narrow, linear 

 axial area. Puncta 7 to 8 in 0,oi mm. forming, slightly radiate, transverse and almost equidistant, 

 straight longitudinal rows. Transverse stritf. ending at the margin with larger, finely punctate 

 alveoli. Lower V. with a rim of obsolete loculi. (-entral area rounded, snmll. Stride 8 to 9 in 

 0,01 mm. radiate, finely punctate. — (J. Scutellwm Ehb. Inf. 194 PI. XIV f. 8. AV. Sm. B. D. I 

 p. '2-2 PI. Ill f. 34. V. H. Syn. p. 132 PI. XXIX f. 1 to 3. A. S. Atl. CXC, 17 to 20. C. Sent, 

 rar. (/emmnfa A. S. Atl. CXC, 23, 24; rar. dilatata A. S. 1. c. 25, 20. 



Marine: Arctic America! Spitsbergen! Finmark! Sea of Kara! East Cape; Behrings Island! 

 Baltic! Caspian Sea (Clrun.), North Sea! Mediterranean! Adriatic! Black Sea! Japan! South Au- 

 stralia! Magellans Straits! California! 



Var. minutissima Grun. (1881). — L. 0,oo8; B. 0,oor. mm. Rows of puncta about 17 in 0, 01 

 mm. Marginal alveoli not larger than the puncta. Axial area narrow. — V. H. Syn. PI. XXIX 

 f. 12. Grun. Franz Josefs Land D. p. 55 PI. I f. 1. 



Marine: Franz Josefs Land (Grun.). 



Var. parva Grun. (1881). — L. 0,oi8 to 0,02; B. 0,oi to 0,017 mni. Upper V. with 11 rows 

 of puncta in 0,oi mm. Marginal puncta elongated. Axial area narrow. — V. H. Syn. PI. XXIX 

 f. 8, 9. (J. consociata and C aggregata Kutz. according to Grun. C. transversalis GreCt. M. J. Ill 

 p. 39 PI. IV f. 7; 1854? C. Scut. var. minor A. S. Atl. CXC, 22. 



Marine: Baltic! East Cape! Adriatic (Atl.). 



Var. stauroneiformis W. Sm. (1853). — L. 0,022; B. 0,01.3 to 0,oi8 mm. Upper valve with 

 narrow axial area. Marginal puncta not larger than the others. Transverse and straight longitu- 

 dinal rows of puncta 10 in 0,ui mm. Lower V. central area dilated into a transverse fascia. — 

 B. D. I PI. XXX f. 24 ii. V. H. Syn. PI. XXIX f. 10, 11. C. pamformis A. S. Atl. CLXXXIX 

 16, 21 (1894). 



Marine: Arctic America! Spitsbergen! Finmark! East Cape! North Sea! Mediterranean Sea 

 (Peragallo), New Zealand (Grun.), England (W. Sm.). 



Var. ampdiaia Grun. (1881). — L. 0,0.^; B. 0,04 mm. Upper V. with somewhat broad axial 

 area, large marginal alveoli and 5 to (5 puncta in 0,oi mm, arranged in equidistant transverse and 

 longitudinal rows. Lower V. with distinct marginal area. Striae 6,5 in 0,oi mm., becoming fainter 

 towards the axial area, strongly radiate. — V. H. Syn. XXIX f. 4. G. adjunda A. S. Atl. 

 CXC, 15, 16? 



Marine: Kerguelens Land! 



Var. ornata Grun. (1867). — L. 0,037 to 0,047; B. 0,o2(; to 0,033 mm. Upper V. with 

 narrow axial area. Puncta 5 to 6 in 0,oi mm., arranged in radiate transverse, and curved 

 longitudinal, rows. The transverse stria; end at the margin in double rows of small puncta. 

 Lower V. with a loculiferous rim. Stii.e slightly radiate and finely punctate, 10 in O.oi mm. — 

 Novara p. 12. V. H. Syn. PI. XXIX f. 6, 7. lihaphoneis marginafa Grun. Verh. 1862 p. 383 

 PI. IV f. 13. 



Marine: Kamtschatka and North Pacific Ocean (Grun.). 



