536 



JANISCHIA. 



H 



p 



Hi 





m 





1 





I 



Fig. 2S1. Haynaldiella antiqua. 



A single species, Haynaldiella antiqua rant. (Coscinodiscus strig Hiatus 

 Witt.), represented in fig. 281, which has been found in a fossil state in 

 Russia and in Hungary. 



GENUS 188. JANISCHIA GRUN., 1882. 



Valve circular, finely punctate ; 

 puncta arranged in quincunx, and 

 interrupted near the margin by a 

 row of coarse elongated puncta 

 (processes), surrounded by a small 

 hyaline area. On two opposite 

 parts of the valve the processes 

 are interrupted and replaced by a 

 long semi-hyaline line, formed of 

 coarse puncta, surrounded by 

 smooth spaces. 



Fig. 282. Janischia antiqua. 



