117 



In slratis antiquissimis marinis ad Kusnetzk in Rossia. 

 Icon: Beitrg. III., tab. 28., fig. 417. 



534. Trinacria sparsa Pant. nov. spec. 



Triangularis, lateribus marginatis concavis; angulis acutis, 

 cornutis; cornua acuta. Structura spinuloso granulosa; granula 

 papulosa rotunda, in lineas radiantes ordinata. Altitud. 67 f.i., 

 long. lat. 83 //., latit. marg. 1-5 f-i. 



In stratis antiquissimis marinis ad Kusnetzk in Rossia. 

 Beitrg. III., tab. 25., fig. 381. 



535. Trinacria Tschestnowii Pant. 



Valva triangularis, lateribus directis; angulis rotundatis 

 cornutis; cornua acuta, per cristam elevatam laterem sequen- 

 tem conjungata. Structura granuloso spinulosa; granula disse- 

 minata; area centralis subnuda. Altitud, 127-5^/., long. lat. 139-5 u. 



In stratis antiquissimis marinis ad Kusnetzk in Rossia. 

 Icon: Beitrg. Ill, tab 9, fig. 156. 



536. Trinacria vetustissimd Pant. nov. spec. 



Fragmentum unicum cum margine squamoso, angulo 

 rotundato cornuto. Cornu elevatum validum, acutum, cum 

 crista elevata marginem sequente conjugatum. Structura disse- 

 minate granulosa. Valva maxima. 



In stratis antiquissimis marinis ad Kusnetzk in Rossia. 

 Icon: Beitrg. III., tab. 30., fig. 439. 



Van Heurckella Pant. nov. gen. 1892 condit. 

 Frustula discoidea, ocello magno marginal! instructa, per 

 porum (canalum angustum) discum percurrentem perforata. 

 Structura plumoso ignea. 



536. Van Heurckella admirabilis Pant. nov. spec. 

 Valva discoidea ocellata, marginata, margine ad ocellum 

 paulo prominente. Ocellum dilatatum nudum, ad marginem 

 poro perforatum. Structura ad imaginem pennae caudae pavonis 

 plumoso ignea, circularis, ad marginem vitta nuda circular!, ad 

 ocellum area semi elliptica nuda interrupta. Valva canaliculo 



