PLATE LIX. 



PAGE 



Figs. 1 and 2. Fascipora subbamosa n. sp 207 



1. A fragment. Upper Marlboro. X 6 



2. Surface of same, showing- several covered apertures. X 20 



Fig. 3. DiSCOSPARSA VABIANS n. sp 205 



3. Surface of a parasitic specimen,, showing one of its maculae. 



Upper Marlboro. X 12 



Figs. 4-8. Cavaria DViioSA n. sp 208 



4. Portion of a small but well jireserved branch, showing two 



maculje, prominent zooecial mouths, and mesopores. When 

 worn the Avails are much thinner and the a?pertures corre- 

 spondingly larger. X 9 



5. Portion of the fractured end of a branch. X 20. 



6. A branch broken longitudinally to show the central hollow and 



tubes bending' outward from it. X 9 



7. Surface of another specimen, showing portion of one of the large 



gonocysts in right half of figiire and usual appearance of 

 zooecia and mesopores in left half. It is to be observed that 

 not only the zooecial tubes x^ass through the gonocyst but 

 smaller accessory tubes, evidently different from the ordinary 

 mesopores, as well. (See also Fig. 8.) X 20 



8. One of the large gonocysts broken so as to show the tubes pass- 



ing through it. "" X 20 

 The originals of Figs. 4-8 are all from Upper Marlboro. 



Figs. 9-12. Eeticulipoba dichotoma Gabb and Horn 207 



9. The broken end (transverse section) of a fragment. In the lower 



half the length of the tubes corresponds with the length of the 

 branches, but in the upper part they turn gradually upward 

 until their direction is nearlj^ at right angles to the length. X 6 



10. Upper and lower fourths of the same. X 20 



11. Portion of one of the sides of a fragment. X 20 



12. A broken gonocj^st which was found over a j)revious smaller 



cyst which remains intact. X 20 

 Figured specimens all from Upper Marlboro. 



Figs. 13 and 14. Ceriopora iiiCROPOBA Goldfuss 210 



13. A subg'lobular mass, showing the form usually characterizing 



this species. 21/0 miles above Popes Creek. X 6 



14. Surface of the same. X 20 



Figs. 15 and 16. Heteropoea ? tecta n. sxd 210 



15. Upper portion of a zoarium. The terminal portions of the 



branch are covered uniformly with subangiilar mouths of 

 tubes, Avhile in the lower portion and in the axis of the main 

 bifurcation, nearly all the mouths are covered with a finely 

 punctate j)Pllicle. The few ajDertures in the pelliculate parts 

 are rounded. Upper Marlboi'o. X 6 



](). Portion of the same. X 20 



Figs. 17 and 18. Lepralia subplana n. sp 219 



17. Surface of a specimen preserving' the front wall of only st-xcii 



of the zooecia shown in the figure. U])])er Marlboro. X 20 



18. The edge of a broken s]ieciraen from the same locality, showing 



four layers of zooecia. X 20 



311 



