EXPLANATION OF PLATE L 



PAGF. 



Fig. I. Monliculipora clintonensis, U. P. J., natural size ... . 20 



la. The same : surface enlarged 



Fig. 2. Monliculipora crustulata, U. P. J., natural size 23 



2a. The same : surface enlarged 



Fig. 3. Monliculipora hospitalis, var. neglecta, new. var., 



natural size 27 



Fig. 4. Monticulipora cleavelandi, U. P. J., natural size. ... 15 



4a. The same : surface enlarged 



Fig. 5. Monticulipora (Fistulipora) alternata, U. P. J., natural 



size • . . 34 



5fl. Another specimen showing the branches inosculating.. 



5^. The same : surface enlarged 



Fig. 6. M. (Fistulipora) nicholsoni, U. P. J., frondose speci- 

 men, natural size 35 



6a. Another specimen (species described as Fistulipora) 

 siluriana, , 



6/?. Surface of 6 enlarged 



6i-. Surface of 6 enlarged but at a different place from 6/'.. 

 Fig. 7. M. (Fistulipora) milfordensis, U. P. J., natural size.. 36 



"ja. The same, another specimen natural size 



"jd. Surface of 7 enlarged. • 



Fig. 8. Ceramopora concentrica, LI. P. J., natural size 38 



8a. The same : surface enlarged 



Fig. 9. Ceramopora whitei, L^. P. J. Type specimen — incrust 



ing, natural size 38 



ga. Surface of same enlarged 



Note The enlargement of the surface of the specimens as noted above, was tha 

 furnished by A Eyepiece and a 2-inch objective. The drawings were made with a 

 camer.i lucida. 



