212 



SYSTEMATIC PALEONTOLOGY 



Occurrence. — Talbot Formation. Wailes Bluff near Cornfield Har- 

 bor, St. Mary's County. 



Collections. — Maryland Geological Survey. 



Membranipoea parvula Ulrich and Bassler. 



Membranipora parvula Ulrich and Bassler, Maryland Geol. Surv., Miocene, 

 1904, p. 410, pi. cxi, figs. 1-2. 



Description. — " In its general zoarial and zocecial characters this 



species resembles M. germana and M. plebeia Gabb and Horn, but it 



is readily distinguished by the smaller size and less elongate form of its 



Fig. 10. — Portions of the surface of Membranipora parvula. X 22. 



zocecia. The walls also are relatively thicker while the longitudinal 

 arrangement of the zocecia is more pronounced. Measuring longitudinally, 

 8 zocecia occur in 3 mm. and transversely 12 may be counted in the 

 same space." 



Occurrence. — Talbot Formation. Wailes Bluff near Cornfield Har- 

 bor, St. Mary's County. 



The specimen figured is unusual in that the opesium is more con- 

 tracted than in typical specimens. Originally described from the 

 Miocene deposits of Maryland. 



Collections. — Maryland Geological Survey. 



