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



I have not seen this species, which according to Grunow resembles N. inornata. The two 

 distinct longitudinal lines seem to indicate that N. fusoides is a Caloneis. 



9. N. Foliola Bkun a. Temp. (1889). — V. narrow-lanceolate, subacute. L. 0,08 to 0,i; 

 B. 0,0 15 to 0,017 mm. Central pores of the median line distant. Striation fine, most visible near 

 the margin. — Brun a. Temp. D. f. du Japon p. 43 PL YII f. 15. 



Marine: Japan, fossil (Brun a. Temp.). 



I have not seen this species, which is not sufficiently figured and described to acertain its 

 proper place. 



10. N. inonmoutliiana Gtrun. (1880). — V. fusiform. L. 0,o62 to 0,09; B. 0,oii to 0,022 

 mm. Median line with somewhat distant central pores and small comma-like terminal fissures 

 turned in the same direction. Area linear. Strise 16 (middle) to 20 (ends) in 0,01 mm., almost 

 parallel in the middle, radiate at the ends. — G-run. A. D. p. 46. Icon. n. PI. V f. 20. 



Fresh water: N. America fossil (Cherryfield, Monmouth)! 



11. N. Banmlerii Pant. (1886). — Y. elliptic-lanceolate, with obtuse ends. L. 0,o96 to 

 0,11; B. 0,018 mm. Area narrow, linear-lanceolate. Strise 9 in 0,oi mm. almost parallel in the 

 middle, radiate at the ends, coarsely punctate; puncta 13 in 0,oi mm., forming longitudinal un- 

 dulating rows. — Pant. I p. 22 PL XII f. 108; II PL XXIII f. 347. 



Marine: Hungary, fossil (Pant.). 



Var. interrupta Pant. (1886). — Strise 12 to 14 in 0,oi mm. crossed by a marginal line. — 

 Pant. I 1. c. f. 103. 



Marine: Hungary, fossil (Pant.). 



I have not seen this species, which I have provisionally placed in this section. It is perhaps 

 akin to Nav. rhomhica. The terminal fissures seem, according to the fig. 103 in Pantocseks work, 

 to be turned in contrary directions. 



12. N. OCCidentalis Cl. N. Sp. — V. lanceolate, with slightly protracted ends. L. 0,04 to 

 0,045; B. 0,015 to 0,02 mm. Axial area moderately broad somewhat dilated in the middle. Strise 

 13 in 0,01 mm. radiate throughout coarsely punctate; puncta about 16 in 0,oi mm. 



Fresh water: Pitt River (Oregon), fossil (Grrove Coll.)! 



This species has some resemblance to iV. lacustris, from which it differs by its much 

 broader area. 



13. N. semitecta A. S. (1874). — V. lanceolate. L. 0,042; B. 0,oi3 mm. Area lanceolate, 

 broad. Strise 10 in 0,oi mm., slightly radiate throughout, coarsely punctate. — A. S. Atl. Probe- 

 tafeLf. 11. 



Marine: Campeachy Bay (Atl.). 



I do not know this species, which may perhaps be a Mastogloia. 



14. Navicula Iota Cl. N. Sp. — V. elliptic-lanceolate, gradually tapering from the middle 

 to the subacute ends. L. 0,i; B. 0,02i mm. Median line with somewhat distant central pores and 

 small terminal fissures. Axial area broad, lanceolate. Striae 13,5 (middle) to 16 (ends) in 0,oi 

 mm., slightly radiate throughout, of equal length in the middle, distinctly punctate; puncta 16 in 

 0,01 mm. arranged in regular, longitudinal rows. — PL V. f. 22. 



Marine: Madagascar (Van Heurck Coll.)! 



15. N. Kappa Cl. N. Sp. — V. narrow lanceolate, with elevated, acute ends. L. 0,17; 

 B. 0,o28 mm. Median line with transversely dilated median pores and elongated terminal fissures, 

 turned in the same direction. Area narrow near the ends of the valve, gradually widened towards 

 the middle. Strise 16 in 0,oi mm., not closer near the ends, of equal length and slightly radiate 



