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



Var. Simhirslciana Pant. (1889). — V. lanceolate with protracted ends. L. U,o4 8; B. O.oift 

 mm. Area lanceolate. Strise 8 in 0,oi mm. — Nav. Simhirskiana Pant. II p. 53 Pl. XII f. 216. 



Marine: Riissia, Ananino, foss. (Pant.). 



Var. hevesensis Pant. (1889). — V. slightly constricted in the raiddle, with subcuneate ends. 

 L. 0,072; B. 0,015 mm. Area wide, linear. Strite (5, ."i in 0,oi mm. — Nav. hevesensis Pant. II 

 p. 47 Pl. IV f. 67. 



Brackish water: Hungary, foss. (Pant.). 



11. N. Kocliii Pant. (1889). — V. elliptical, with broad, rounded ends. L. 0,017 to 0, 01 4 

 mm. Median line with approximate central porew, and small cnrved terminal iissiires. Area narrow, 

 linear-lanceolate, widened in the middle. Strife slightly radiate in the middle, 8 (8 to 12 Pant.) 

 in 0,01 mm., convergent at the ends. — Pant. II p. 49 Pl. IV f. 72. 



Brackish water: Hiingary, foss. (Pant.). 



12. N. Areschougiaiia Grun. (1860). — V. narrow, linear, triundulate, with subrostrate, 

 obtuse ends. L. 0, 1; B. 0,oo8 mm. Area linear. Strife 10 in 0, 01 mm. — Grun. Verh. 1860 

 p. 521 Pl. III f. 23. 



Marine: Sweden, Bohuslän (Grun.). 



This species is entirely unknown to me, haviiig never seen in the numerous gatherings from 

 west-coast of Sweden. which I have examined, anything similar to the fig. of Grunow. I have 

 provisionally placed this form near to Nav. palpehralis, among the varieties of which is a triundu- 

 late form, viz. var. Botteriana. 



13. N. Vahliana Grun. (1874). — V. lanceolate, with subrostrate, obtuse ends. L. 0,04; 

 B. 0,011 mm. Area narrow lanceolate. Strite 13 in 0, 01 mm., divergent and alternately longer 

 and shorter in the middle, transverse at the ends. — A. S. N. S. D. Pl. II f. 21. 



Marine: North Sea (A. S.). 



This speciee is unknown to me, perhaps a variety of N. palpehralis. 



14. N. palpebralis Bréb. (1853). — V. elliptic-lanceolate, with acute ends. L. 0,o3 8 to 

 0,08; B. 0,013 to 0,0 16 mm. Area broad, lanceolate. Strife 10 in 0, 01 mm., radiate throughout, 

 not distinctly punctate. — Bréb. in W. Sm. B. D. I p. 50 Pl. XXXI f. 273. (xRUN. Verh. 1860 

 p. 536 Pl. III f. 27. DoNK. B. D. p. 25 Pl. IV f. 3. V. H. Syn. p. 96 Pl. XI f 9. 



Marine, usually litoral: Davis Strait! North Sea (coast of England, Norway and Bel- 

 gium)! Atlantic (Morocco)! Mediterranean (Balearic Islands! Adriatic Grun.). Galapagos Islands! 

 Connecticut! 



Var. Barclayana Greg. (1857). — V. broad, linear with acuminate-apiculate ends. L. 0,04 1 

 to 0,043 (0,1 to 0,11 according to Greg.); B. 0,02 (0,026 to 0,03 according to Greg.) mm. Stripe. 

 11 to 12 in 0,01 mm. — Nav. Bard. Greg. D. of Cl. p. 480 Pl. IX f. 9. Na.v. palp. var. Barlcl. 

 V. H. Syn. p. 97 Pl. XI f. 12. 



Marine: North Sea (Scotland, Greg., Belgium, V. H.), Mediterr. (Balearic Islands, Adriatic)! 



Var. anfiulosa Greg. (1856). — V. as the type. L. O,ofi to 0, 11; B. 0,oi4 to 0,021 mm. 

 Area lanceolate, angular in the middle. — Nav. angulo-sa Greg. T. M. S. IV p. 42 Pl. V f. 8. 

 Donk. b. D. p. 26 Pl. IV f. 4. A. S. N. S. D. II "f. 19. Nav. palp. var. anqulosa V. H. Syn. 

 Pl. XI f 10. 



Marine: North Sea (Sweden! Belgium V. H.), Mediterranean (Naples)! 



Var. semi)>lr>ta (trbg. (1859). — V. narrow, elliptic-lanceolate, witli siibacute ends. L. 0,ofi 

 to 0,07. t; b. 0,oi;i to 0,0 1.^ mm. Area narrow, lanceolate. — Finn. scmipl. Grug. M. .1. VII p. 84 

 Pl. VI f. 12. Na^v. anfiulosa rar. /? Greg. T. M. S. IV p. 42 Pl. V f. ><*. Nav. scmipl. Donk. B. 

 D. p. 26 Pl. IV f. 5. Nar. prmsvela A. S. N. S. D. p. 90 Pl. II f. 20? 



Marine: Spitsbergen! Finmark! Scotland (Grev.), Morocco! Fossil, Baldjik! 



