BRYOZOA—CRYPTOSTOMATA. 



167 



J 1 



Fig. 217. a, Filifascigera megcera, X 9» to P an< ^ s ^ e y i ews \ b, Discosparsa va- 

 rians, surface, X 6 ; r, Cavaria dumosa, portion of branch, X A% '■> c ', fragment 

 showing gonocyst, X io 5 c " > broken gonocyst to show tubes, X 2 ° 5 ^> Ceriopora mi- 

 cropora, complete mass, X 3> an d surface, X IO '■> e > Bijlustra torta, surface, X IO » 

 f y Onychocella digitata, surface, X io 5 an( i single zocecium showing lunarium-like 

 process, X *5 > g> Membranipora oblongida, surface, X IO > ^» M. rimulata, surface 

 of small-celled variety, X IO '■> *> Adeonellopsis mnbilicata, surface, X 8 ; j, Schizopo- 

 rella informata, entire mass, X % > J v > surface of same, X 8. (After Ulrich and Md. 

 Geol. Surv. ) 



164. F. megaera Lonsdale. (Fig. 217, a.) Cretacic. 

 Minute, encrusting, with attached portion flattened, clusters of 



tubes rising at nearly right angles from attached part. 

 Rancocas formation of New Jersey. 



XCIX. Discosparsa d'Orbigny. 

 Like Berenicea, but the obconical or cup-shaped zocecia attached 

 by center of base only. Cret -Tert. 



165. D. varians Ulrich. (Fig. 217, b.) Cretacic-Eocenic. 

 Apertures more or less radially arranged about small depressed, 



smooth maculae ; ringlike peristomes ; interspaces solid. 



Common in Upper Cretacic (Rancocas) at Vincentown, N. J., 

 and in the Aquia formation of Maryland. 



C. Cavaria Hagenow. 

 Ramose, with cylindrical branches, the hollow axis divided by a 

 number of plates; apertures all around the stem, immersed and 

 with prominent peristomes. Gonocysts present. 



