->r 45 i-^ 



periplieriam versus striis brevioribus, distantioribus. Diameter valvae 0-05- 0-0736 

 mm., areae 0*03 — 0'036 mm. 

 Elesd. 



Hyalodiscus scoticus (Kg.) Grun, J. R. M. S. 1879, pg. 690, tab. 21, 

 fig. 5; Van H. Synops. tab. 84, fig. 15—18; Cyclotella scotica Kg. Bac. pg. 

 50, tab. 1, fig. 23; Podosira Hormoides W. Sm. Br. D. II. pg. 53, tab. 43, fig. 237. 

 Dolje. 



Hyalodiscus subtilis Bail. var. australiensis Grun. 

 Elesd f Felso-Esztergdly, Kekko, Szakal, Szent-Peter, Dolje. 



TRUANIA NOV. GEN. 



Valva disciformis convexa, a radiis laevibus brevibus, in segnienta cuneiformia divisa; 

 segmeiita punctata, punctis in lineas rectas et decussatas dispositis; centro depresso maculis disse- 

 niinatis tecto; niargine strinlato. 



Truania archangelskiana nov. spec. tab. 20, fig. 178, 82:/^. Diamet. valvae 0-063 mm., 

 areae 0'028 mm.; radii laevi 27, segmenta 27 cuneiformia, basi arcuata; punctis 20 in O-Ql mm.; 

 striis marginalibns 25 in O'Ol mm. 



In strato tertiario prope Archanffelsk-Kurojedowo Rossiae europeae. 



Lepidodiscus elegans 0. Witt. Simbirsk 188.5, pg. 27, tab. 7, fig. 6; A. Scbm. Atlas 

 tab. 103, fig. 5; tab. nostra 20, fig. 182, 827/^. 



In strato tertiario prope Archangelsk-Kiirojedowo. 



CYCLOTELLA KG. 



Cyclotella szakalensis Grun. tab. 27, fig. 259, ^oo/^ Valva valde 

 convexa, media parte irregulariter minute punctata, profunde plicata, punctis 

 nonuUis majoribus, juxta plicam obviis ; margine radiate et decussatim striate 

 punctate, striis radiantibus 15 in 0*01 mm., peripheriam versus striis brevio- 

 ribus, distantioribus interpositis, corona spinularum perminutarum aegrae con- 

 spicua. Membrana valvae crassa. Diameter valvae 0'07 — 0*08 mm. 

 Szakal, (A. Grunow). 



PODOSIRA EHRBG. 

 Podosira? subspiralis Grun. tab. 27, fig. 251, "oo/^^ Valvis parum 

 convexis in media parte irregulariter punctatis, peripheriam versus oblique striate 

 punetatis, corona spinularum minutarum intra marginalium ornatis. Diamet. 

 0-064 mm. 



Felso-Esztergdly, (A. Grunow). 



MELOSIRA AG. 



Melosipa biharensis nov. spec. tab. 15, fig. 130, "s^/i. — Valva ro- 

 tunda, margine striis radiantibus et corona punctorum cincto (11 in 0*01 mm.). 

 Inter marginem et centrum circulus punctorum cuneiformium, radiantium (3 in 

 O-Ol mm.). Diameter 0*07 mm. 

 Elesd, Krkkd, Szakal, Szent-Peter. 



Melosira Caput Medusae nov. spec. tab. 17, fig. 151, ^^'U. Valva 



