EAELY PALEOZOIC BEYOZOA OF THE BALTIC PROVINCES. 345 



ESCHARIPORA RECTA Eichwald. 



Escharipora recta Eichwald, Letlisea Rossica, vol. 1, 1860, p. 435, pi. 27, figs. 



8a-c. 

 Not Escharopora recta Hall. 



The species referred by Eichwald to Hall's Escharopora recta, a well 

 known bryozoan from the Trenton formation of New York, has no 

 relationship to this or any other bryozoan, but is allied to Recepia- 

 culites and IscTiadites. The latter alliances were recognized by 

 Eichwald, since he placed his description of Escharipora recta next 

 to those of Ischadites. His error was in the identification of his 

 species, and not in its classification. 



Occurrence. — Eichwald cites the species as from the ''Calcaire a 

 Orthoceratites, " island of Dago. 



Genus MICROPORA Eich^Arald. 



Micropora Eichwald, Lethsea Rossica, vol. 1, 1860, p. 393. 



The status of this genus has been indicated on page 127. Micropora 

 gracilis Eichwald, the first species, proves to be a valid species of 

 Stictoporella, and the generic name Micropora might have 

 been retained instead of Stictoporella had it not been 

 employed by Gray previously for another generic type of 

 bryozoans. 



MICROPORA RHOMBIC A (Eichwald). 



Text fig. 220. Fig. 220.— Mi- 



CEOPOEA 



Eschara rJiombica Eichwald, Urwelt Russlands, vol. 2, 1847, p. 43, ehombic.\. 



pi. 1, fig. 3. Feagment 



Micropora rhombica Eichwald, Bull. Soc. Nat. des Moscou, 1855, p. ofzoaeium, 



458; Lethaea Rossica, vol. 1, 1860, p. 395. Oedovici- 



Eichwald's description of this species is of little value esthonia! 

 for accurate determination, but the original of his figure, ( a f t e e 

 reproduced here, is in all probability a species of Escharo- ichwald. 

 pora. E. subrecta is the only Russian species of the genus so far 

 noted, and it is possible that Micropora rhombica refers to the same 

 form. Should Eichwald's type be discovered and found to be the 

 same as Escharopora subrecta, this would not affect the synonymy, 

 since Micropora rhombica can not be considered as sufficiently de- 

 scribed and figured to be recognized. 



Occurrence.— '^Calcsiire a Orthoceratites de Reval." 



Genus MYRIOLITHES Eichwald. 



ifynoZii/ies Eichwald, Lethaea Rossica, vol. 1, 1860, p. 450. 



Although this genus was described as a member of the tabulate 

 corals, it is probable that the type-species, M. fastigiatus is a ramose 

 monticuliporoid bryozoan. Neither Eichwald's figure nor descrip- 



