Plate 15. 



Figs. 1-5. Cupidaria doma D'Orbigny. 1851. (See also plate 1, fig. 18.) (p. 77.) 



1. A zoarivim, X 10, showing the ancestnilar zooecia covering the substratum. These zooecia 

 are calcified and deprived of polypide. 



2. Another zoarium X 10, iUustrating that the ancestrular zooecia are easily detached in fossiliza- 

 tion. 



3. Inner side of zoarium, X 10, which is smooth or slightly granulated. 



4. Inner (superior) side of a zoarium with hydrostatic zooecia, X 20. The ribs are smoooth and 

 are not radially arranged. This difference in arrangement depends on the form of the substratum 

 on which the larva fixes itself. 



5. Celluliferous face X 20, illustrating the form of the denticles. 

 Miocene (Duplin marl); Wilmington, Xorth Carolina. 



Figs. 6-10. Cupidaria denticulata Conrad, 1841. (p. 79.) 



6. Calcified ancestrular zooecia X 20. The vibracula alone are visible. 



7. Center of a zoarium X 20, deprived of calcified zooecia. 



8. Inner side of a large zoarium X 20, without hydrostatic zooecia, sho-ndng the regular tiifurca- 

 tion of each rib. 



9. Zooecia X 20, illustrating the two symmetrical condyles and the vestibular arch above, the 

 aiiriculated \-ibracula and the irregular denticles below. 



10. A median section through a zoarium X 25, showing the substratum (s) upon which the larva 

 became attached, the calcified hydrostatic zooecia (zh i covering the substratum and the ordinary 

 zooecia surmounted by their viljracula (i'). 



Pliocene (Waccamaw marli: Waccamaw River, Horry County, South Carolina. 

 Fig. 11. Cribrilina puiidata Hassall, 1841. (p. 87.) 



The type specimen of Lepralia marylandira Ulrich and Bassler, 1904, X 20, sho-ning its identity 

 with this widespread fossil and recent species. 

 Miocene (St. Mary's formation): Cove Point, Maryland. 

 Fig. 12. Puellina radiata forma scripta Reuss, 1847. (See also pi. 35, fig. 1.) (p. 89.) 



A well-preserved example, X 20 with -n-ide zooecia, somewhat approaching forma rareccsta, 

 Reuss, 1847. 



Miocene (Yorktown formation): 1 mile west of Fort Xonsense, Gloucester County, Virginia. 

 Fig. 13. Puellina innominata Couch, 1844. (p. 90.) 



A Miocene example of this widespread species, X 20. 



Miocene (Choctawhatchee marl i: Jackson Bluff, Ocklocknee River, 25 miles southwest of Talla- 

 hassee, Florida. 

 Fig. 14. Cribrilina ligulata, new species, (p. 88.) 



The type specimen, X 25, showing the ancestrula and surrounding zooecia. The spines of the 

 peristome are transformed by coalescence into several small tongues. 

 Miocene (Calvert formation!: 1 mile south of Parkers Creek, Calvert County, Maryland. 

 Fig. 15. Cribrilina cuspidaia, new species, (p. 88.) 



The incrusting type specimen, X 20 showing the line of small lacunae, the few large lacunae 

 and the very large triangular avicularia with rounded leak. 

 Miocene: Santiago, Cuba. 



259 



