18 



Habitat in stratis diatomaceis antiquissimis ad Kusnetzk 

 Rossiae. Icon: Beitrg. III., tab. 26, fig. 393. 



57, Aulacodiscus notahilis Pant, nov^ spec. 



Valvis circularibus, marginatis, subplanis; margine punctato 

 et anulo hyalino 3—4 ,«. lato interno cincto; appendiculis sub- 

 marginalibus, 11, elevatis; plicis arcuatis depressis; rimis profundis, 

 abbreviatis; area centralis nuda 9 a. lata, circiilaris; slructura 

 cellulosa, cellulae rotundae, 3, 4, 6 in 10 u. ad centrum valvae 

 majores, marginem versus decrescentes, hie in lineas confluentes, 

 ceterum in lineas radiantes et circulares dispositae. Diametr. 

 120-150 .a. 



Habitat in stratis marinis tertiariis ad Nagy Kiirtos in 

 Hungaria. Icon: Beitrg. III., tab. 9., fig. 151. 



58. Aulacodiscus Pemgalloi Pant. nov. spec. 

 Circularis convexus, cum appendicibus 3, robustis, ab area 



nuda hyalina cinctis et rimis haut distinctis, ad marginem striis 

 validis, atris, ornatus; area centralis nuda circularis, diminuta; 

 structura punctata, punctis 8 in 10 ,«., in lineas radiantes et 

 circulares dispositis. Diametr. 110—125 u. 



Habitat in stratis marinis antiquissimis ad Kusnetzk in 

 Russia. Icon: Beitrg. III., tab. 25., fig. 371. 



Dedicavi banc speciem illustram Dom. M. Peragallo, inves- 

 tigator! Bacillarum celeberrimo a Paris. 



59. Aulacodiscus szakalensis Pant. nov. spec. 

 Circularis, hyalinus, marginatus, cum margine striolato, 3 u. 



lato et appendicibus marginalibus 3, validis; rimis abbreviatis 

 sat profundis; area centralis circularis; structura punctata, 

 punctis 3 — 4 in 10 u. in lineas radiantes et circulares ordinatis. 

 Diametr. 135-150 //. 



In stratis marinis tertiariis ad Szakal in Hungaria. Icon: 

 Beitrg. III., tab. 28., fig. 415. 



60. Aulacodiscus Tschestnowii Pant. nov. spec. 

 Circularis convexus, cum plicis arcuatis, appendicis validis, 



ad marginem sitis et rimis profundis; area centralis irregularis 



