200 A. E. Verritt — Comparisons of Coral JFhunce. 



Plate XIII. 



Figures 1, 2. — Favia fragwm. Two varieties found together at Bermuda, x 1 ' f, . 



Page 90. 

 Figure 3. — Favia gravida. Type. Top view of a part of one of the original 



specimens, No. 1465. x 2. Page 91. 

 Figure 4. — Favia leptophylla Ver. Top view, of apart of the type. No. 1517. 



x2 5 L Page 91. 

 Figure 5. — The same specimen. Vertical section. X2., 1 -,. 

 Figure 6. — Maiandra conferla Ver. Top view of part of one of the types. No. 



1466. x2. Page 84. 



Plate XIV. 



Figures 1, la. — Maiandra Agassizii. Top views of different parts of one Bahama 

 specimen. No. 5615. 1, natural size ; la, enlarged about 1}£. Page 81. 



Figure 2. — Maiandra clivosa, var. explanqta Ver., now Top view of a part next 

 the margin of No. 1196. About natural size (l^V)- Page 79. 



Figure 3. — Mceandra spongiosa (Dana). Top view of a part of the type, No. 

 4383. Natural size. Pages 69, 80. 



Figure 4. — Mceandra cerebrum. Top view of the middle of a Bermuda speci- 

 men with acute narrow collines. Reduced to about 1 : (. Page 74. 



Figure 5. — The same. Portion of a Florida specimen, No. 1901, showing the 

 formation of astreiform calicles (a, b) by exothecal budding, x 1*£. Page 75. 



Figure 6. — Madracis decactis (^Ly.). End of a lobate branch, showing an excep- 

 tionally large calicle, with numerous septa, surrounded by those of ordinary 

 size, but here crowded and without coenenchyma between them. x4. 

 Page 108. 



Plate XV. 



Figure 1. — Orbicella annularis. Portion of upper surface of a Bermuda speci- 

 men. A, A calicle undergoing fission. Enlarged 1%. Page 94. 



Figure la. — The same specimen. Natural size. 



Figure 2. — The same. Var. stellulata (Dana). Portion of Dana's type, with 

 worn surface, No. 4266 ; a, a transverse section, x 2}i. Page 96. 



Figure 3. — Orbicella hispidula Ver.,,sp. nov. Portion of the surface of the 

 type, No. 98. x 1%. Page 100. 



Figure 3a. — The same specimen. x 'J \ , . 



Figure 3fr — The same specimen; vertical section. x2 



Figure 4. — Orbicella excelsa Dana. One of the distal lobes of one of the original 

 types, No. 1729. xl^. Page 98. 



Figure 4a, 4b. — The same specimen, x 2 1 ^. 



Figure 5. — Solenastrma hyades (D.). Side view of a specimen from St. Thomas. 

 No. 15866. y.\%. Page 104. 



Figure 5a. — The same specimen. About natural size (1 J. ). 



Figure 56. — The same specimen. Group of calicles from the side, where not 

 crowded, x !}.(. 



