56 AMERICAN FOSSIL BUYOZOA. [bull. 173. 



DiPHTHEROPORA De Koniiick. 



DipJitheropora De Koninck, Recherches sur les Animaux Fossiles, part 2, 1873, p. 13. 

 Genotype (only species) : D. regularts De Koninck, loc. cit., p. 13, pi. i, 4. 



This is almost certain]}' an Eridopora. 



DiSTEiCHiA Sharpe. 



Z>*s<dc/«a Sharpe, Quar. Jour. Geol. Soc. London, IX, 1853, p. 146. Only species: 

 D. retici'Iala Sharpe, loc. cit., p. 146, pi. vii, 8 a-d. 



This appears to be a synonym for Ciathrojjm'a Hall 



FiLiTES (Barrande) Pocta. 



Filites (Barrande) Pocta, Systeme Silurian Boheme, VIII, tome 1, 1894, p. 108. 

 Genotype: F. crlbrosus Pocta, loc. cit., p. 110, pi. x, 19-25. 



This appears to be a type not yet discovered in American strata. 



Lemmatopora Pocta. 



Lemmatopora Pocta, Systeme Silurien Boheme, VIII, tome 1, 1894, p. 102. Genotype: 

 L. angulosa Pocta, loc. cit., p. 105, pi. ii, 20-21. 



This genus as described seems in part equivalent to Stictoporella 

 Ulrich, hut probably includes forms referable to other genera. 



Mastopora Eichwald. 



Madopora Eichwald, Lethsea Rossica, I, 1860, p. 434. Only species: 3L concara 

 Eichwald, loc. cit., p. 434, pi. xxvii, 7 a-d. 



This may be related to RMnopora Hall. 



Micropora Eichwald. 

 M'uropora Eichwald, Lethsea Rossica, I, 1860, p. 393. 



Three species are given, M. gracilw Eichwald, M. eyclostomoides, 

 M. rlioinhica. Maj^ be Stictoporella^ or perhaps Clathropora. 



Myriolithes Eichwald. 



Myriolithes Eichwald, Lethsea Rossica, I, 1860, i>. 450. 



Four species are cited; probably monticuliporoids. 



Pteropora Eichwald. 



Pteropora Eichwald, Lethsea Rossica, I, 1860, p. 395. 



Two species, P. pennula and P. exilis, are given. Eichwald sa3^s his 

 genus is related to IcJdhyorachis McCoy. 



