116 r. T. CLEVE, SYNOPSIS OF THE NAVICIJEOID DIATOMS. 



Ann. Mag. N. H. [2] X p. 10 PI. II f. 9 (1852). B. U. 1. c. f. 215. V. H. Syn. p. 117 PI. XX 

 f. 3. Per. VII f. 4 to 7. P. aft. car. caspia GtRUN. Casp. Sea Alg. p. 18 PL III f. 8. Per VII f. 8. 



Fresh and brackish water: Sweden! Finland I England! Saxony! Belginm (V. H.), Fran(^e! 

 Baltic! North Sea! Caspian Sea (Grun.). 



Var. Scalprum Gaill. a. Turp. (1827). — L. 0,i2 to 0,ir>; B. 0,ui'.) mm. T.S. : L.S. '7,^, 

 17/^^. „ 2s^ar. Scalprum Gaill. a. Turp. Mem. du Musenm XV PI. X, XI f. 3 (accord, to Kiitz.). 

 P. acuminatum W. Sm. B. D. I p. 6G PI. XXI f. 20!). Grun. A. D. p. 55. Per. p. 17 PI. VII f. 3. 

 PI. Kochii Pant. Ill PI. IX f. 153 (1893)?? 



Brackish and marine: North Sea! 



10. G. litoralo W. Sm. (1852). — V. sigmoid, lanceolate, with attenuate, slightly rostrate 

 ends. 1j. 0, ii to 0, p.); B. 0,o2 2 to 0,o4 5 mm. Median line sigmoid, central. Longit. striffi very 

 strong and distant. T.S. : L.S. '^',„ in 0,0 1 mm. — P. litoralc \V. Sm. Ann. and Mag. N. Hist. 

 [2] IX p. 10 PL II f. 8. B. L). I p. r.7 PL XXII f. 2U. Per. VII f. 1. 



Marine: North Sea! English Cliannel (W. Sm.), Mediterranean Sea (Per.). 



11. G. distortuiii W. Sm. (1852). — V. lanceolate, slightly sigmoid. Ends more or less 

 abruptly produced into short, obtuse beaks, turned in contrary directions. L. 0,o7 to0,i2; B. 0,oi7 

 mm. Median line sigmoid, central. Transv. stride more distant than the longit. T.S. : L.S. ^^/j;, 

 2Y.,s. — Pleur. (list. W. Sm. Ann. Mag. Nat. Hist. [2] IX p. 7 PL I f. 10; B. I). I p. 67 PL XX 

 f. 210. Per. VIII f. 32. 



Marine: Spitzbergen! North Sea! English Channel (W. Sm.), Ionian Archipelago (Grun.), 

 Cameroon, Africa! 



Var. Parkeri Harrison (1«(J0). — L. 0,o8 to 0,i5; B. 0,oir) to 0,o2.') mm. T.S. : L.S. '^22 

 (Grun.), -7,4, -V.,7, 23/,^ in 0,oi mm. ~ Pleur. Park. Harri. M. J. 18t30 p. 104. Grun. A. D. p. 57. 

 V. H. Syn." p. li8 PL XXI f. 10. Per. VIII f. 33. 



Fresh and brackish water: Baltic! England! Belgium! 



Var. sfnuroneoides Grun. (1H80). — Central nodule transversely dilated. T.S. : L.S. -''/j, 

 0,01 mm. — Pleur. Park. var. stauron. Grun. A. D. p. 57. 



Brackish water: Hudson River (Grun.). 



12. G. Fasciolsi Ehb. (1839). — V. lanceolate, attenuated into long, linear beaks, curved 

 in opposite directions. L. 0,o9 to 0, 15; B. 0,oi5 to 0,o24 mm. ]\[edian line central, straight in the 

 middle of the valve. T.S. : L.S. -V24, "'Vi2 i'^ '^"' "^"^- — Ceratoncis Fasriola Ehb. Abb. 1839 

 (accord, to Chase). Pleur. Fasciola \v. Sm. B. D. I p. 67 PL XXI f. 211. Grun. A. D. p. 58. 

 V. H. Syn. p. 119 PL XXI f. 8. Hendry T. M. Soc. 1862 X p. 152. Per. VllI f. 36 to 38. 



Marine: Spitsbergen! North Sea! California! Barbados! 



Var. sulcata Grun. (1880). — Longitudinal stria' strong. T.S. : L.S. '7,- (Grun.), -" jj. -^;,6 

 in 0,01 mm. — P. {Fasc. rar.^) .sulcatum Grun. A. D. p. 55 PL IV f. 75. V. H. Syn. XXI f. 7. 

 Per. VIII f. 43. 



Marine: Sea of Kara (Grun.), Spitsbergen! Firth of Tay (Grove), Mouth of Seine! 



Var. tennirostris Grun. (1880). — L. 0,i4 to l.ie; B. 0,oii to 0,oi2 mm. T.S. : L.S. -7i9, 

 27.,,, in 0,01 mm. — P. {Fasc. car.?) teuuirostris Grun. A. D. p. 55 PL IV f. 76. Per. VIII f. 42. 



Marine: Sea of Kara (Grim.). 



Var. arcuaia Donk. (1858). - V. lanceolate. Ends more suddenly produced into lung, narrow 

 beaks curved in contrary directions. L. 0, 1 to 0, 11.'); B. 0,ui2 mm. Median line central, straight. 

 Transv. strife 24 to 25 (Grun.) in 0,oi mm.; longitudiiuil tiner. — Pleur. arcuat. Donk. T. M. S. 

 VI p. 25 PL III f. 10. Per. VIII f. 34, 35. 



Marine: Coast of Sweden (Grun.)! England (Donk.). 



Gyros. Fasciola is intimately connected with (r. (iistortnm var. Parkeri, and by the Var. 

 ieiiuirostris, with G. uiaeruin. 



