A, E. Verrilli—The Bermuda Islands; Coral Reefs. 219 
I have reproduced here some of the figures of JZ. clivosa, given 
by L. Agassiz (fig. 73a (2, 4) and fig. 746), for easy comparison with 
those given by Lesueur in 1820. he differences in the polyps are 
no more than constantly occur, due to different degrees and modes 
of contraction of the polyps and the individual variations in the 
colonies. Lesueur said nothing about the general form of his sin- 
uosa, but though J. clivosa becomes nodular and irregular when 
large, it has an even and regular surface when young. Probably 
all of Lesueur’s hand-gathered specimens were young and in the 
crust-like stage of growth, when they can be easily detached and 
carried ashore alive. 
M. clivosa has not yet been found at Bermuda, though it might 
weil be expected to occur on the outer reefs, for it is very common 
on the Florida and Bahama reefs. 
Favia fragum (Esper) Edw. and Haime. Star Coral. Figure 15. 
Astrea (or Favia) ananas and coarctata of many modern writers. 
Favia fragum Vaughan, op. cit., p. 303, pl. viii, figs. 1, 2, 1902. Verrill, 
these Trans., xi, pp. 90, 171, pl. xiii, figs. 1, 2, 1901. Duerden, Mem. Nat. 
Acad. Sci., viii, p. 569, pls. xiii-xv, figs. 92-116, anatomy, histology, and 
larvee, 1902. 
This forms small rounded or hemispherical masses, seldom more 
than 2 or 3 inches across, usually solidly attached. It is generally 
720 ris) 
Figure 72b.—Mceandra cerebrum, typical variety, section of collines showing 
forms of septa and denticles, x about 2. 
Figure 75.—Favia fragum. Part of the upper surface of a specimen with 
crowded calicles (var. coarctata), about natural size. Both phot. by A. H.V. 
pale yellowish or greenish yellow, sometimes dark yellowish brown, 
or tinged with green, often with white specks, especially on the 
