536 



Repoet of the State GEOLoaiST. 





Compare these figures with those of Intrapora puteolata "and 

 Coscinella elegantula. 



91 92 93 



Fig. 91. Stictoporella basalis, 9, portion of the frond, x9. 

 Fig. 92. A still further enlargement, x25. 

 Fig. 93. Stictoporella cribrosa, ic6. 



Family Cystodictyidse, [Ulrich, emend. 

 The forms in this family have the same general appearance 

 and manner of growth as the forms included in the Stictopokidte, 

 but differ from those forms in having two septa, situated close ' 

 together, in the cell tube, which form a lunarium at the aperture. 

 The following genera are included in this family : Cystodictya, 

 CosciNiuM, CosoiNOTRYPA, DioaoTRYFA, Meekapora and Phrac- 



TOPOBA. 



Cystodiotya, Ulrich. 

 (Jour. Cin. Soc. :N'at. Hist., Yol. Y, p. 152. 1882.) 

 Type, Cystodiotya ocellata, Ulrich. 



(Plate 10, figs. 11-20.) 

 This genus has the same general appearance and mode of 

 growth as Stictopora, but differs from that genus in having two 

 pseudosepta in the cell tube and a lunarium at the aperture. 



Cystodiotya Gilberti, though not the type species, shows the 

 characteristic features of the genus much more clearly than any 

 other. 



