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



Yar. maxima Cl. — L. 0,2 1; B. 0,ii4 mm. Strife and puncta 9 in 0,oi mm. 



Marine: Sendai, Japan, fossil (Brun Coll.)! 



Var. tenuistriata. — L. O.is; B. 0,09 mm. Strife and puncta 16 in 0,oi mm. 



Marine: Mexillones Guano (Deby Coll.)! 



Var. undulata Cl. (1881). — L. 0,o7; B. O.oss mm. Margins triundulate. Striee 14, puncta 

 18 in 0,01 mm. — N. R. D. p. 7 PL II f. 19. 



Marine: Galapagos Island! 



Var. Centraster Cl. — L. 0,125; B. 0,oo7 mm. Areas broad with a group of 5 to 9 large 

 granules on both sides of the central nodule. Striae 13, puncta 20 in 0,oi mm. — Part. I PI. IV f. 14. 



Marine: Mexillones Guano (Deby Coll.)! 



Var. Schleinitsii Jan. (1881). — V. elliptic-lanceolate. L. 0,12; B. 0,o7 5 mm. Lateral areas 

 broad in the middle, narrower towards the ends. Striae 8 to 9 in 0,o 1 mm. — N. Schlein. A. S. 

 Atl. LXX f. 43. Jan. Gaz. XV f. 1. 



Marine: Leton Bank (Atl.), Cape Horn (Petit). 



Var. finitima Jan. — V. lanceolate, often with slightly triundulate margins. L. 0,ii to 

 0,14; B. 0,06 mm. Areas broad in the middle, suddenly narrowed towards the ends. Interior 

 margins of the areas convergent. Strife 9 to 13, puncta 14 to 17 in 0,oi mm. — Gazelle Exp. 

 XV f. 2 to 4, 18. 



Marine: Falkland Islands (Deby Coll.)! Morocco! Madagascar! Columbo, Ceylon (Letour- 

 neur Coll.)! 



Var. manca A. S. (1874). — V. elliptical. L. 0,i5; B. 0,o69 mm. Areas broad with con- 

 vergent interior margins. Strise 9, puncta about 12 in 0,oi mm. — Atl. Ill f. 17. 



Marine: Campeachy Bay (Atl.). 



Var. californica Grev. (1859). — V. elliptical. L. 0,07 to 0,oi; B. 0,04 to 0,053 mm. La- 

 teral areas very large, semielliptical, smooth. Strise 10, puncta 13 in 0,oi mm. — N. californica 

 Grev. Edinb. N. Ph. J. X p. 29 PI. IV f. 5. N. calif, var. campechiana Grun. in A. S. Atl. Ill f. 19. 



Marine: California (Grev.), West Indies! Colon (Deby Coll.)! Campeachy Bay! 



Var. circumsecta Grun. (1874). — V. elliptical. L. 0,06 to 0,19; B. 0,03 to 0,08 mm. Areas 

 large, semilanceolate, with numerous dots and sometimes, large puncta. Strise 9 to 15; puncta 10 

 to 18 in 0,01 mm. — N. polysticta var. circumsecta Grun. in A. S. N. D. p. 89 PL I f. 36, 42. 

 AtL III f. 27, 28. N. polysticta A. S. Atl. Ill f. 26. N. californica A. S. Atl. Ill f. 6. N. 

 Henned. var. granulata Grun. in A. S. Atl. Ill f. 3. Jan. Gazelle Exp. XV f. 14. 



Marine: Finmark! North Sea! Mediterranean Sea! Red Sea! Ceylon! Madagascar! Mary- 

 land (Deby Coll.)! Florida! Cape Horn! Galapagos Islands! Mexillones Guano (Deby Coll.)! Hun- 

 gary, fossil (Deby Coll.)! 



Var. neapolitana Cl. — V. elliptical with subcuneate ends. L. 0,15; B. 0,o7 8 mm. Areas 

 narrow, about Vs 0^' ^^^ breadth of the valve, with large, scattered dots. Strise 7,5, puncta 

 10 in 0,01 mm. 



Marine: Gulf of Naples! 



Var. nehulosa Greg. (1857). — V. ellipticaL L. 0,055 to 0,085; B. 0,025 to 0,04 2 mm. Areas 

 very large, suddenly narrowed at the ends, smooth. Strise 14 to 16, puncta 16 to 20 in 0,oi mm. 

 — N. nehulosa Greg. D. of Clyde p. 480 PL IX f. 8. Donk. B. D. p. 11 PL II f. 2. A. S. Atl. 

 Ill f. 14; LXX f. 44. Nav. Hennedyi Witt Archangelsk D. IX f. 5. ' 



Marine: North Sea! Morocco! Mediterranean Sea! Madagascar! Ceylon! Galapagos Islands! 

 Florida! Fossil: Archangelsk (Witt). 



The N. Hennedyi var. fossilis Pant. (II p. 47 PL XII f 207) has a narrower area, and 

 belongs probably to the var. nebulosa, to judge from the fine striation. ■ 



Forma bacillifera Pant. (1889). — L. 0,112 to 0,125; B. 0,o48 to 0,o«2 mm. Strife 16 to 18 

 in 0,01 mm. Areas with irregular linear markings. — N. hacillifera Pant. II p. 42 PL V f. 80; 

 N. Hennedyi rar. abnorm. A. S. Atl. CXXIX f. 14. 



