^: 30 :^ 



tica 0*021 mm. longa, medio constricta 0*008 mm. lata, polis rotundatis 0*01 

 mm. latis; striae robustae (10 in 0.01 mm.) medio deficientibus, tantum in 

 vallicula pvinctis notatis ; rapbide crassa lageniforme inflata. 

 Szent-Peter. 



Dem ersten Bearbeiter der fossilen Bacillanen von Mocsdr gewidmet. 

 Navicula Yarrensis Grun. A. Schm. Atlas tab. 46, fig. 1 — G ; tab. 

 nostra 2, fig. 20, s*Vi. 

 Elesd, Dolje. 



Navicula Zechenterii nov. spec. tab. 14, fig. 118, ^^^/j. — Elongata 

 0"072 mm. louga, 0*017 mm. lata; polis rotundatis; striis horizoutalibus (8 in 

 0*01 mm.), a linea longitiidinali interruptis; valliculis crenulatis; nodulo centrali 

 subquandrangulari ; volva raphidea lobata. 

 Szent-Peter. 



Herrn Dr. Gmtav Zechenter in Kremnitz gewidmet. 



PLEIROSIGMA W. SM. 



Pleuposigrma balticum W. Sm. Br. D. I, pg. m, tab. 22, fig. 207; 

 Pritch. Inf. pg. 917, tab. 9, fig. 144; Grim. loc. c. 1860 pg. 558; Jauiscb. 

 Hondur. pg. 11, tab. 3, fig. 3; Van H. Synops. tab. 20, fig. 1; Truan Diat. 

 Astur. pg. 49, tab. 3, fig. 5. 

 Elesd. 



Pleuposig'ma Eudon nov. spec. tab. 21, fig. 190 a. *^^'i, h. ^^Vi Recta, 

 elongato4anceolata 0*28 mm. longa, 0*05 mm. lata; striis punetatis (13 in 0*01 

 mm.) liorizontalibus, punctis in lineas duas obliquas ordinatis ; nodulo centrali 

 dilatatato. 

 Szenf-Peter. 



PleuPOSigrna Normanii Ralfs in Pritch. Inf. pg. 99. Grunow in Cleve 

 Grun. Arct. Diat. pg. 14, 52, tab. 3, fig. 67. 

 Felso-Esztei ydli/. 



FAMILIA ACHNANTHEAE. 



ACHNANTHES BORY. 



Achnanthes brevipes Ag. Syst. pg. 1 ; Ebrbg. Infuss. tab. 7, fig. 1 1 ; 

 Amerika tab. I, 3, fig. 13; Mikrogeolog. tab. 6, 2, fig. 25; Kiitzg. Bac. pg. 

 17, tab. 20, fig. 7; Rabeuh. S. D. pg. 26, tab. 8, fig. 4: Pritch. Inf. pg. 87b, 

 tab. 10, fig. 199—202; W. Sm. Br. Diat. II, pg. 27, tab. 27, fig. 301; Van 

 H. Synops. tab. 26, fig. 10—12; Truan D. Astur. pg. 56, tab. 4, fig. 16—18. 

 Elesd, Szent-Peter, Dolje. 



Var. contracta Grun. in Cleve Grun. Arct. D. pg. 19, tab. nostra 11, 

 fig. 99, **o/i. 

 Dolje. 



