EAELY PALEHZCIO BRYOZOA OF THE BALTIC PROVINCES. 



99 



opening on Uie outer side, and the inner, noncelliiliferous face bearing 

 a v.'eli wrinkled epitlieca. The two specimens known were broken 

 from the solid rock so that most of the zooecial layer adhered to the 

 matrix and left the clay filled central space with a mold of the epith- 

 eca to represent the zoarium. In figure 34 «., a portion of the 

 zooecial layer itself is seen adhering to the clay mold, which, however, 

 represents the shape of the zoarium equally well. 



Surface of zoarium smooth, maculae inconspicuous, but, as in other 

 species of the family, readily determined by the radial arrangement 

 of the zooecia about them. At the surface the zooecia are subrhom- 

 boidal in outline, have rather thick walls which bear a small, distinct 



\l J u cat:, 



Fig. 34.— Anolotichia sacculus. a, a type-specimen, natural size, with most of the zoabium 



EXFOLIATED AND SHOWING THE IMPRESSION OF THE EPITHECA; &, VERTICAL SECTION, X20; C, TANGEN- 

 llAL SECTION, X20, SHOWING NUMEROUS MESOPORES AND INDISTINCT LUNARIA; d, ANOTHER TANGENTIAL 

 SECTION, X20, WITH THE NORMAL OCCURRENCE OF LUNARIA AND TUBULI; e, TWO LUNARLA, X35, EXHIBIT- 

 ING NUMBER AND DISTRIBUTION OF TUBULI. KUCKERS SHALE (02), BARON TOLL'S ESTATE, ESTHONIA. 



lunarium in the acute angle; about four zooecia in 2 mm. The luna- 

 rium occupies about one-fifth of the apertural wall and bears four or 

 five of the tubules characterizing the genus. Mesopores are few at 

 the surface, averaging about one to a zooecium (see fig. 34 d), but 

 deep tangential sections show them in comparative abundance (fig. 

 34 c). In such sections the zooecia are oval-shaped and the lunarium 

 is poorly developed. Vertical sections show the characteristic 

 lamination and porous structure of the walls common to all ceram- 

 oporoids, and in addition indicate that diaphragms are absent. 



The hoUow form of growth is sufficient to distmguish the present 

 species from others of the genus, although other differences may be 

 noted by comparing the figures with those of the other species of 

 Anolotichia here described. 



