ART. 14 FOSSIL Al^D EECENT BRYOZOA OAISTU AND BASSLER 151 



ijera Ellis and Solander, 1786. Pasythea has been chosen by Busk, 

 1884, because of its priority. Smitt, 1873, discovered a similar spe- 

 cies ehurnea but placed it in his new genus Gemellipora, making it 

 the genotype.^^ Waters, 1899, recognized Smitt's error and classed 

 G. eburnea in Pasythea. In 1904 he retained the term Gemellipora 

 with Gemellipora glahra Smitt, 1873, for the type, which MacGilU- 

 vray, 1895, and Maplestone, 1901, had already done before him. 



Levinsen, 1909, for these two species alone formed a distinct fam- 

 ily Liriozoidae and two genera Gemellipora Smitt, 1873 (for G. ehur- 

 nea), and Liriozoa Lamarck, 1812 (for L. tulipijera). The names are 

 chosen in perfect accord with the rules of nomenclature. The char- 

 acters observed by Levinsen in order to separate the two genera are 

 clearly zoarial; the cells are arranged by threes in Liriozoa and by 

 pairs in Gemellipora. We do not recognize this classification because 

 the number of species is not sufficient and finally because the zooe- 

 cial grouping does not appear to correspond to clearly differentiated 

 functions. We now follow the simpler classification of Waters and 

 later if the studies on the larvae of the two species, of their ovicells, 

 of their anatomical characters, confirm the ideas of Levinsen we 

 will be the first to admit it. 



PASYTHEA EBURNEA Smitt, 1873 



Plate 8, Figures 11, 12 



1873. Gemellipora eburnea Smitt, Floridan Bryozoa. Kongl. Svenska Vet- 

 enskaps-Akademiens Handlingar vol. 11, No. 4, p. 35, pi. 7, figs. 

 152-156 (not pi. 35, pi. 9, figs. 177, 178). 



1885. Pasythea eburnea Busk, Polyzoa collected by Challenger. Results 

 Voyage Challenger, vol. 10, pt. 30, p. 5, pi. 34, fig. 1. 



1899. Pasythea eburnea Waters, Bryozoa from Madeira. Journal Royal 

 Microscopical Society, p. 12, pi. 3, fig. 22 (opercula). 



1909. Gemellipora eburnea Levinsen, Studies on Cheilostomatous Bryo- 

 zoa, p. 313. 



We have found only one fine specimen of this remarkable species 

 and we have nothing to add to the excellent study of Busk, 1885. 

 This author thought that the frontal pores are equivalent to the 

 septules observed on the lateral walls of the zooecia in other cheilo- 

 stomata. The small fragments of the frontal which we have photo- 

 graphed seem to verify this. 



Occurrence. — Albatross Station D. 2331, north of Cuba; 23° 10' 

 31'' N.; 82° 19' 55" W.; 114 fms.; coral. 

 Florida, 275 meters (Smitt) ; Carribbean Sea, off 

 Culebra Island, 631 meters (Busk); and off Som- 

 brero Island, 729 meters (Busk). 



13 "The name of the genus is chosen in reference to the colonial form of one of the Floridan species 

 which may be named O. eburnea" (Smitt, 1872). 



