94 



BULLETIN 77, UNITED STATES NATIONAL MUSEUM. 



Compared with other species of Anolotichia, the present form shows 

 most resemblance to A. revalensis, new species, from the Orthoceras 

 limestone. The latter, however, has distinctly larger polygonal 

 zooecia, practically no mesopores, and is decidedly more robust. 

 An undescribed form in the Rhinidictya bed of the Black Kiver 

 (Decorah) shales at St. Paul, Minnesota, is probably the American 

 representative, differing mainly in having fewer lunarial tubuli. 



Occurrence. — Common in the Wesenberg limestone (E) at Wesen- 

 berg, Esthonia; also found in the Chasmops limestone at Kabeck and 

 Hulterstad Church, island of Oeland. 



Coty pes. —Cat. No. 57201, U.S.N.M. 



Specimens and thin sections from Wesenberg and from the island 

 of Oeland are in the collections of the British Museum. 



ANOLOTICHIA BREVIPORA, new species. 



Text fig. 30. 



The type-specimen of this species incrusted the inner side of the 

 living chamber of a cephalopod. In the process of weathering, the 

 shell has been completely removed, leaving the bryozoan with the 

 celluliferous side buried in the rock, and the basal membrane exposed. 



Fig. 30.— Anolotichia bkevipoea. a, vertical section, X20, exhibiting short, immature, and 



MATURE regions; 6, tangential section, X20, WITH TLTBULES IN LUNARIA; C, PORTION OF SAME, X35, 

 SHOWING STRUCTURE OF LUNARIUM IN DETAIL. KUCKERS SHALE (C2), REVAL, EsTHONIA. 



The surface characters of the species can not be figured at present, 

 but the thin sections show a structure so distinct from other species 

 that there should be little trouble in its identification. One especial 

 feature is the unusual tenuity of the zocecial layers, and the extreme 

 brevity of the mature and immature regions. While several layers 



