ZON-ZOO pilsbry's names 



Zonitinae Pils. 1895, Nautilus 9: 18. 



zonitoides Pils. & Olsson Vitrinella 1952, Proc. ANSP 104: 73, pi. 13, fig. 2-2b (San Miguel 

 Island, Pearl Islands, Panama). 



Zonitotrochus Pils. 1919, Bull. AMNH 40: 253 (type species, Trochozonites medjensis Pils.). 



Zonodiscus Pils. 1948, Mono. no. 3, ANSP 2: 591 (type species, Anguispira kochi (Pfr. )). 



zooki Brown & Pils. Drillia 1911, Proc. ANSP 63: 345, pi. 23, fig. 8 (Oligocene-Gatun Forma- 

 tion, Isthmus of Panama). 



164 



