120 BULLETIN 103, UNITED STATES NATIONAL MUSEUM. 



names of these species as the latter authors have done since the 

 author of each is the same. A simple question of date ought not 

 alter all the literature of this species which although it has never 

 been entirely published is nevertheless quite important. 



Our American specimens are well preserved. 



Occurrence. — Miocene, Banana River, Costa Rica. D. F. MacDon- 

 ald, collector, 1911. Bowden marl at Bowden, Jamaica. 



The earliest occurrence of this species in the United States is in the 

 Alum Bluff formation, but it is found also at many other horizons of 

 the Miocene and Pliocene. 



Geological distribution. — Burdigalian of Bordeaux (Collection 

 Canu). Helvetian of France (Canu) of Spain (De Angelis). Tor- 

 tonian of Austria-Hungary (Reuss), of Italy (Seguenza). Plais- 

 ancian of Italy (Manzoni), of England (Busk), of Spain (De An- 

 gelis), of Algeria (Canu). Astian of Italy (Neviani, Canu). Sicil- 

 ian of Rhodes (Manzoni), of Italy (Neviani). Quaternary of Italy 

 (Neviani), of Argentina (Canu). Miocene of Australia? (Waters). 



Family CELLEPORIDAE Busk. 

 Genus HOLOPORELLA Waters. 



HOLOPOKELLA ALBIROSTRIS (Smitt). 



Plate 53, fig. 8. 



1873. Discopora alMrostris Smitt, Floridan Bryozoa, pt. 2, Kongl. Svenska 



Vetenskaps-Akademiens Handlingar, vol. 11, No. 4, p. 70, pi. 12, figs. 



233-239. 

 1889. Cellepora alMrostris Jelly, A Synonymic Catalogue of the Recent 



Marine Bryozoa, p. 45. (See for complete bibliography.) 

 1914. Eoloporella alMrostris Osbtjrn, Bryozoa of Tortugas Islands, Pub. 



182, Carnegie Institution, p. 215. 



Of the two specimens of this species which have been collected at 

 Panama and at Anguilla one corresponds to Smitt's figure 237 and 

 the other to figure 238. 



Occurrence. — Rare in the Emperador limestone at the old quarry 

 one-third mile north of west of Empire, Panama Canal Zone, D. F. 

 MacDonald and T. Wayland Vaughan, collectors, 1911 (Station 

 No. 6106). Also rare along the southwest side of Crocus Bay, An- 

 guilla, Leeward Islands, Dr. T. Wayland Vaughan, collector, 1914, 

 Loc. No. 6894. 



Geological distribution. — Miocene of Australia and New Zealand 

 (Waters). Habitat. Atlantic off Florida. Pacific off Australia. 

 Specimens have been dredged off Australia to a depth of 121 meters. 

 Smitt in Florida has discovered them between 40 and 56 meters, but 

 Osburn states that it abounds at a depth of 24 meters. 



