EAET.Y TEETIAEY CHEILOSTOME BRYOZOA, 57 



culiim. On the other hand, it is quite frequent to find on the same 

 zoarium some zocecia deprived of spiramen, and which nevertheless 

 are still living and contain a polypide. 



Genus GALEOPSIS Jullien, 1903. 



1903. Galeopsis Jtjt.lten, Bryozoa provenant des Campagnes de Vllirondelle, 

 p. 94. 

 The spiramen is very large and salient. The apertnra has two 

 cardelles. The frontal is a tremocyst or an olocyst. 

 Genotype. — Galeopsis rahkhis Jnllien, 1903. 

 Range. — Maestrichtian-Recent. 



Several new species of this well-marked genus are known in the 

 American Early Eocene. 



SCHIZAROPSIS, new genus. 



{Schisos, slit; opsis, appearance.) 



The apertura bears a straight proximal border notched by" a small 

 rectilinear rimule. The frontal is garnished laterally with areolae; 

 it is formed of a very finely granulated pleurocyst placed on a thick 

 olocyst. The spiramen is almost as large as the peristomice. 



Genotype. — Schizaropsis conveica., new^ species. Jacksonian. 



SCHIZAROPSIS CONVEXA, new species. 



Plate 5, fijr. 7. 



Description. — The zoarium incrusts oysters ; the zooecia are grouped 

 in linear longitudinal lines. The zocecia are distinct, a little elon- 

 gated, elliptical, or rectangular; the frontal is very convex, smooth, 

 or very finely granular, bordered laterally with six large widely 

 spaced areolae. The apertura is formed of a semilunar anter and of 

 a straight proximal border notched by a small rectilinear rimule. 

 The spiramen is elliptical, transverse, placed on the exterior peris- 

 tomie, almost as wide as the peristomice. The ovicell is globular, 

 salient, smooth ; it is hyperstomial and opens by a very large orifice 

 above the apertura and opposite the spiramen. Two small triangular 

 avicularia are placed symmetrically on each side of the apertura. 



fA<2=0.05mm. 

 Measureme7its. — Apertura (without YimmQ)U_QQ^ ^^^^ 



fZs=0.35-0.50 mm. 

 Zoceciaj^^ =0.30 mm. 



Variations. — The young zooecia have no superior arch and are 

 deprived of spiramen. On the adult zocecia when the superior arch 

 is not formed the lateral lips of the peristomie limit a rimule-spira- 

 men. The lateral areolae are little visible because of the very large 



