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



Var. maxima Cl. — L. 0,2 1; B. 0, 114 mm. Strite and pmicta 9 in 0, 01 mm. 



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



Var. fenuistriata. — L. 0,i8; B. O, o 9 mm. Striie and puncta 16 in 0, 01 mm. 



Marine: Mexillones Guano (Deby Coll.)! 



Var. undulata Cl. (1881). — L. 0,07; B. O.oss mm. Margins triundulate. Striai 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, 007 mm. Areas broad witb a group of 5 to 9 large 

 granules on both sides of the central nodvile. Strise 13, puncta 20 in 0, 01 mm. — Part. I Pl. IV f. 14. 



Marine: Mexillones Guano (Deby CoU.)! 



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

 broad in the middle, narrower towards tbe ends. Striee 8 to 9 in 0, 01 mm. — N. Schlein. A. S. 

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



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



Var. fimtima Jan. — V. lanceolate, often witb slightly triundulate margins. L. 0,n to 

 0,14; B. 0,0 6 mm. Areas broad in the middle, suddenly narrowed towards the ends. Interiör 

 margins of the areas convergent. Strise 9 to 13, puncta 14 to 17 in 0, 01 mm. — Gazelle Exp. 

 XV f. 2 to 4, 18. 



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

 neur CoU.)! 



Var. manca A. S. (1874). — V. elliptical. L. 0,i5; B. 0,069 mm. Areas broad with con- 

 vergent interiör margins. Striée 9, puncta about 12 in 0,oi mm. — Atl. III f. 17. 



Marine: Campeachy Bay (Atl.). 



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

 teral areas very large, semielliptical, smooth. Striffi 10, puncta 13 in 0, 01 mm. — iV. califomiea 

 Grev. EdinI). N. Ph. J. X p. 29 Pl. IV f. 5. N. calif. var. eam.pecUana Grun. in A. S. Atl. III f. 19. 



Marine: Calif ornia (Grev.), West Indies! Colon (Deby CoU.)! Campeachy Bay! 



Var. circiimsecta Grun. (1874). — V. elliptical. L. 0,o6 to 0,19; B. 0,o3 to 0,o8 mm. Areas 

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

 to 18 in 0,01 mm. — N. polysticta var. circiimsecta Grdn. in A. S. N. D. p. 89 Pl. I f. 36, 42. 

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

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



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

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

 gary, fossil (Deby CoU.)! 



Var. neapolitana Cl. — V. elliptical with subcuneate ends. L. O, i."); B. 0,o7 8 mm. Areas 

 narrow, about '/g of the breadth of the valve, with large, scattered döts. Stria?. 7, .i, puncta 

 10 in 0,01 mm. 



Marine: Gulf of Naples! 



Var. nebulösa Greg. (1857). — V. elliptical. L. 0,055 to O.oss; B. 0,02.5 to 0,u42 nnn. Areas 

 very large, suddenly narrowed at tlie ends, smooth. Strite 14 to 16, puncta 16 to 20 in 0, 01 mm. 

 — 'n. nehnlo.m Greg. D. of Clyde p. 480 Pl. IX f. 8. Donk. B. D. p. 11 Pl. II f. 2. A. S. Atl. 

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



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

 Florida! Fossil: Archangelsk (Witt). 



The N. Ifeuneilyi v<(r. fossilis Pant. (Il p. 47 Pl. XII f 207) lias a narrower area, and 

 belongs probably to the vai'. nebulösa, to judge from the fine striation. 



ForiiKi haciUifcra Pant. (1)S8!)), — L. 0,112 to 0,125; B. 0,048 to 0,or,2 mm. Stritii K! to 18 

 ill 0,01 mm. Areas with irregular liiiear markiiigs. — N. Jxirillifcra Pant. 11 ]). 42 Pl. V f. 8(). 

 N. Jlnmedyi nir. iihnnrw. A. S. Atl. (JXXIX f M. 



