Occurrence of Recent Heteropora. By Arthur Wm. Waters. 393 



Hab. — Chalk. Environs de Tours (d'Orb.). Eecent, Adelaide. 



The genus Heteropora has been found in the Jurassic of 

 England and France, and the external appearance of H. lepida 

 Novak.,* is much the same as that of the recent species. The 

 genus was also frequent in the Maestricht chalk. Heteropora 

 dicliotoma and two other species are mentioned by Eeuss and 

 Manzoni, from the Miocene of Austria and Hungary. Busk men- 

 tions several species from the Crag, and the American tertiaries 

 have also yielded it, but it does not appear to have been previously 

 found recent. 



Besides the interest of the genus occurring recent, the striking 

 similarity in shape of H. peUiculata and cervicoruis to Cheilosto- 

 mata taken in the same hauls is a most curious fact. 



* "Beit. z. Kennt. der Bry. der biJhm. Kreid.," 'Denk. k. k. Ak. Wissensch. 

 Wien,' 1877, vol. xxxvii. 



