ART. 14 FOSSIL, AND RECEISTT BRYOZOA CANU AND BASSLER 83 



Family GALEOPSIDAE Jullien, 1903 



Genus GALEOPSIS Jullien, 1903 



The ovicell is hyperstomial. The aperture has two cardelles. The 

 peristomie is enlarged. The spiramen is very large and salient. The 

 frontal is a tremocyst. The operculum bears two lateral bands. 

 Avicularia. 



Genotype. — Galeopsis pupa Jullien, 1903. 



Range. — Cretaceous (Maastrichtian) — Recent. 



Historical. — The genus Galeopsis was introduced into the nomen- 

 clature by Jullien, 1903, for two species with large spiramen — G. rabi- 

 dus and G. pupa which he had discovered. He recognized that the 

 spiramen was a tube opening in the peristomie above the operculum 

 and he explained its physiologic function. Lacking material, he was 

 not able to elucidate the structure of the new genus. Our definition 

 of 1923 is therefore uncertain. At this time, conforming to the rules 

 pf nomenclature, we chose as the genotype the first species cited (6^. 

 faHdus). In our materials from the Philippines, we have had the 

 fortune to discover some new species of Galeopsidae and to make a 

 detailed study of them. We can now explain the structure of these 

 ^.nimals and give better generic definitions. 



First our selected genotype (G. rabidus) from its structure belongs 

 in reality to Gigantopora, Ridley, 1881. To pieserve the name the 

 second species (G. pupa) should be regarded as the type of the genus 

 Galeopsis. In consequence we here revise our definition of 1920. 



Affinities. — As now limited the genus Galeopsis is very close to 

 GepJiyropTiora Busk, 1884, and Waters, 1908, did not hesitate to unite 

 them. The opercula, not being perfectly identical, we believe the 

 two genera should be maintained at least provisionally. Galeopsis 

 .differs from GepJiypJiora in the presence of cardelles, in the absence 

 of a sinus to the aperture, and in the presence of two lateral bands 

 to the operculum„ indicating a different muscular system. 



The determination of fossil specimens is very difficult and it can 

 be done only by dissection of the peristomie. The recent species are 

 fts follows, showing it is an equatorial genus solely: 



Galeopsis pupa Jullien, 1903, Pacific (Philippines, Gambier). 



Galeopsis mutahilis Canu and Bassler ms., Philippines. 



Galeopsis hrevicapitata Canu and Bassler ms., China Sea. 



Genus STENOPSIS Canu and Bassler, 1927 



The ovicell is hyperstomial. The aperture is rounded-quadrangu- 

 lar, without cardelles. The peristomie is elongated. The spiramen 

 is broad and salient. The frontal is a tuberose tremocyst. The oper- 

 culum is thin, semielliptical, and without muscular attachments. 

 Avicularia. 



Genotype. — Stenopsis (Porina) fenestrata Smitt, 1873. 



