48 p. T. CLEVE, SYNOPSIS OF THE NAVICrr-OII) DIATOMS. - 



j„ I Striffi about 21 in 0,oi mm C. wmula A. S. 



I — — 2;) — — . . ^ C. fasdota Lacjst. 



[ Valve lanceolate I'J. 



11. — constrioted 1-1. 



( — bioonstrictiHl K;. 



^^ j Ends capitate ' . . . ('. Beccariana Gni;u. 



~" \ — not — 13. 



^,, ) Valve trocliiform C. bodofiensis Pant. 



' \ — elliptical-lanceolate C. botfnica Ch. 



) Axial area indistinct f. grilapagnisis (U.. 



\ — — distinct or rather broad 15. 



j Stria> G in O.oi mm (J. scintillans Be. a. Temp. 



IT). > — ',1 — (J. Hardmaniana Cl. 



I — !•' — ('. (jdlapagensis car. japonic.n. 



... ) Strise (5 to 11 in 0,oi mm 17. 



\ — about 20 in fl,oi ram IS. 



. I Median segment large C. ophiocephala Cl. 



\ — — small C. formicina Grun. 



..„ I Longitudinal lines median C. daviger Vh. 



' ' 1 — — indistinct C. coltiiiihit'nsis Cl. (C. SclMDianinna rar. Herihandi Piiirag.). 



.,„ I Valve constricted 20. 



■ ■ i — not — 30. 



„„ J Valve constricted in the middle 21. 



^ \ — biconstricted 25. 



^ j Striffi 7 to 12 in O.oi mm 22. 



\ — about 22 — N. Libfr rar. Janischiann. 



Area indistinct C. Liber var. Bleischinna . 



— distinct 23. 



Central and axial area united in a narrow lanceolate space 24. 



area quadrate ('. Pnn-dlii vitr. Bartholomci 



Longitudinal lines broad C. Aluscn Greg. 



— — narrow f'. Klvkeriana Truan. 



Small forms (L. 0.o;5 to O.o) mm.) 2G. 



Larger — -27. 



„, , Ends broad C. lobiifa Schwartz. 



„„ j Central 

 \ Central 



24. <j 



- I 

 I 



\ — acuminate C. egena A. S. 



„„ ( Axial area broad C. bidarnta Cr,. a. Grove. 



' \ — — narrow 28. 



Striifi about S in O.oi mm ('. binonstnda Grove a. Sttrt. 



28. ■! — — 13 — 2!». 



— — IS) — C. SdtUMamriana var. trlnodis. 



Longitudinal lines double C. eximia Grun. 



— — single, inframarginal C. ndenensis Ci-. 



Valve lanceolate, margins convex 31. 



— linear — parallel 4!t. 



Central area with lunate marks 32. 



— — without — 33. 



j Freshwater species ('. Sdiumanniana Grun. 



1 Marine — C. samoensis Grun. 



j Valve asymmetrical C. currinerda Grun. 



I — symmetrical 34. 



.,, J Only the portion aronnd the median line striate C. dlspersa Growe a. Start. 



\ Marginal portion of the valve striate 35. 



.,p. J Longitudinal lines broad 3(j. 



■'• 1 — — fine 38. 



... j Longitudinal lines dilated to broad, lunate areas C. hrgophila Cl. 



' \ — — linear bands 37. 



,.„ I Longitudinal hands and central areas united C. Castracanei Grun. 



'1 — — — — not C. biseriato Pet. 



29. 

 30 

 31. 

 32. 

 33, 



