^- 64 -^ 



bus, et segmentis secundaris plica laevi fiircata iu aream intraniarginaleni laevem 

 transieiite; ornatis segmentis secundariis plica laevi furcata, iu aream centra- 

 lem et intramargiualeui laevem transiente ornatis. 



Bajtha, Felso-Esztergdly, Kekko, Mogyorod, Szeid-Peter. 



Actinoptychus Sturii nov. spec. tab. 8, tig. 61, ^es^^^ Valva circularis, 

 segmentis (in specie uuico) 12, cuueatis, primariis cum appendiculo intramar- 

 giuali vestitis et radio laevi in aream laevem centralem transiente divisis, disse- 

 minate-punctatis, ad marginem subtiliter deusius puuctatis, punctis in lineas 

 rectas et decusatas ordinatis ; segmentis secundariis brevioribus, a mai'giue area 

 magna quadrangulari (0*008 mm. alta) laevi divisis, ceterum disseminate punc- 

 tatis. Diamet. O'l mm. 



Szent- Peter. 

 Herrn Dr. Dionyslus Stur Director der k. k. geologisclien Reiclisanstalt zu 



Wien gewidmet. 



Actinoptychus Szaboi nov. spec. tab. 8 fig. 64, s*7i. Valvis rotun- 

 datis ; segmentis cuueatis 6 ; primariis cum appendiculo intramargiuali ornatis, 

 concavis, punctis densioribus (24 in O'OOl mm.) tectis; secundariis convexis, 

 cum punctis remotioribus (20 in 01 mm.); puuctis in lineas longitudinales et 

 obliquas arcuatas dispositis; area centrali magna laevi. Diamet. 0"035 — 005 mm. 

 Szakal, Szent-Peter. 



Actinoptychus Tpuanii A. Sclnn. tab. 109, fig. 14, 15. Diamet. 0-1265 

 mm. Series puuctorum in elevationibus lO'^ls in 0"0l mm., in depressionibus OVs 

 in 0-01 mm. 



Forma: trivittata Pant. tab. 7, fig. 57, ^'"/i- Minor, margine distincto 

 corona striolaruin (8 in O.Ol mm.) validiorum cincto ; segmentis primariis appeu- 

 diculatis, et radio laevi breviori usque ad aream centralem percurente divi- 

 sis, puuctis densioribus, miiioribus (14'^/3 iu 0*01 mm.) in lineas rectas et obli- 

 quas ordinatis, vittis tribus transversalibus nigricantibus laevibus interruptis; 

 segmenta secundaria cuin puuctis majoribus (12 in 0*01 mm.) tecta; ad ver- 

 ticein regularum promineutium cum areis majoribus laevibus in segmenta secun- 

 daria projectis. Diameter 0*09 mm. 



Actinoptychus undulatus (Kg.) Ralfs in Pritch. lufuss. pg. 839, tab. 

 5, fig. 88; A. Schm. N.-See Diat. tab. 3, fig. 29, 30; Atlas tab. 1, fig. 1—6; 

 Van H. Synops. tab. 22'''% fig. 14, tab. 122, fig. 1 — 4 ; Actinoptychus biter- 

 narius, biternatus Elirbg. Mikrog. tab. 18, fig. 20, tab. 35 A 16, fig. 1 etc.; 

 Janisch Guano pg. 157, tab. I. B. fig, 4; Honduras pg. 3, tab. 3, fig. 12; — 

 Actiiiocyclus undulatus Kg. Bac. pg. 132, tab. 1, fig. 24; Sm. Br. D. I. pg. 

 25, tab. 5, fig. 43. 



Bajtha, ^Lesd, Also-, Felso-Esztergaly, Ke/cko, Mogyorod, Szakal, Szent-Peter, Dolje. 



Actinoptychus Van Heurckii nov. spec. tab. 25, fig. 288, ^"/i* 

 Valva circularis, margine (0"003 mm. alto) cingulo spiuularum ornato, spinulae 

 (5 in 0"01 mm.) basi inflatae; segmentis (in specimiiie unico) 10, cuueatis puuc- 

 tatis; punctis (15 in 0*01 mm.) in lineas longitudinales et obliquas dispositis ; 



