170 p. T. 



Var. fuglypfa Ehb. (1854). — L. O.026; B. 0,oi7 mm. Striae of the upper valve crossed by 

 4 to 5 longitudinal, blank bands. Striae of the lower valve 19 in 0,oi mm. — C. eugl. Ehb. M. 

 Q. XXXIV A. f. 2. V. H. Syn. XXX f. 33, 34. Grdn. Franz Josefs Land Diat. PL I f. 3. 



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

 (Daintree River)! 



4. C. Scutellum Ehb. (1838). — Outline broadly elliptical. Upper V. with coarse puncta 

 arranged in transverse rows, usually ending at the margin in an elongated or triangular, finely 

 punctate space, and in longitudinal, usually straight and equidistant, rows. Lower V. delicate 

 with a marginal, frequently loculiferous, rim or line. Median line straight. Central nodule 

 rounded or stauroid. Striae radiate, becoming obsolete towards the median line, finely punctate. 



Var. genuina Cl. — L. 0,04.t to o,o6; B. 0,ur 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 strife ending at the margin with larger, finely punctate 

 alveoli. Lower V. with a rim of obsolete loculi. Central area rounded, small. Striae 8 to 9 in 

 0,01 mm. radiate, finely punctate. — C. Scutellum Ehb. Inf. 194 PL XIV f. 8. W. Sm. B. D. I 

 p. 22 PL III f. 34. V. H. Syn. p. 132 PL XXIX f. 1 to 3. A. S. Atl. CXC, 17 to 20. C. Scut, 

 rar. gemmata A. S. Atl. CXC, 23, 24; rar. dilatata A. S. 1. c. 25, 26. 



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

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

 stralia! Magellans Straits! California! 



Var. minutissima GtEdn. (1881). — L. 0,oo8; B. 0,oo6 mm. Rows of puncta about 17 in 0,o 1 

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

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



Marine: Franz Josefs Land (Grun.). 



Var. parva Grun. (1881). — L. 0,oi8 to 0,02; B. 0,oi to 0,oi7 mm. Upper V. with 11 rows 

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

 f. 8, 9. G. consociata and G. aggregata KtJTZ. according to Grun. C. transversalis Greg. M. J. Ill 

 p. 39 PL IV f. 7; 1854? G. Scut. var. minor A. S. Atl. CXC, 22. j 



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



Var. stauroneiformis W. Sm. (1853). — L. 0,022; B. 0,oi3 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,oi mm. Lower V. central area dilated into a transverse fascia. — 

 B. D. I PL XXX f. 24 /S. V. H. Syn. PL XXIX f. 10, 11. G. paniformis 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. ampliata Grun. (1881). — L. 0,0.5; B. 0,o4 mm. Upper V. with somewhat broad axial 

 area, large marginal alveoli and 5 to 6 puncta in 0,oi mm, arranged in equidistant transverse and 

 longitudinal rows. Lower V. with distinct marginal area. Strife 6,5 inO,oi mm., becoming fainter 

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

 CXC, 15, 16? ' _ ' 



Marine: Kerguelens Land! 



Var. ornata Grun. (1867). — L. 0,os7 to 0,o47; B. 0,o26 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 strife end at the margin in double rows of small puncta. 

 Lower V. with a loculiferous rim. Striae slightly radiate and finely punctate, 10 in 0,oi mm. — 

 Novara p. 12. V. H. Syn. PL XXIX f. 6, 7. Ehaphoneis marginata Grun. Verh. 1862 p. 383 

 PL IV f. 13. 



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



