A, FE. Verrili— The Bermuda Islands; Coral Reefs. 241 
there are more than 12 tentacles. Dr. Duerden has described its 
anatomy very fully. 
When dried the coral becomes dark brown or black, unless 
cleaned with potash or bleached. 
It is most abundant on the outer reefs, but is also common on the 
inner reefs and serpuline atolls off the southern shore. It is ocea- 
sionally found, also, in Harrington Sound. 
This is an abundant reef coral in the West Indies and Florida and 
has received many names not given above. 
Porites porites (Pallas), var. clavaria Lam. Figure 97. 
Madrepora porites (pars) Pallas, Elench. Zoédph., p. 324, 1766. 
Porites polymorphus (pars) Link, Besch. Nat. Samml., Rostock, p. 162, 1807. 
Porites clavaria Lam., Hist. Anim. sans Vert., ii, p. 270, 1816. Dana, Zodph., 
p. 504, 1846. Pourtalés, Florida Reefs, pl. xii, figs. 4-6, 1880. Rathbun, 
Proc. U. S. Nat. Mus., x, pp. 856-861, pl. xvi, pl. xvii, fig. 2, pl. xix, fig. 1, 
1887. Duerden, Mem. Nat. Acad. Sci., viii, p. 427. 
Porites porites (pars=forma clavaria) Vaughan, op. cit., pp. 314-316, pl. 
Xx1x, pl. xxxi, fig. 2, 1902. 
Porites polymorpha Verrill, these Trans., xi, pp. 158, 181, pl. xxxi, figs. 3, 
3a, i90t. 
This is a rather unattractive coral. As found in Bermuda it grows. 
in irregular clumps or clusters of stout, uneven, often crooked, short, 
blunt branches, dead below, and covered with small, inconspicuous, 
shallow calicles. The color in life is dark brown to yellowish brown 
97a 96a 
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Ri oe rc > 
» 
- k , a SS "od 3 
Bey: 
Figure 96a.— Porites astreoides, group of calicles. 
Figure 97a.—P. porites, var. clavaria, group of calicles, x 4. Both phot. by 
RC ELSAVG 
or gray. It occurs in shallow water near the shore attached to small 
masses of rocks, as well as on the reefs. It was not very abundant 
in any locality visited by us. It is variable in form, but the variety 
(or allied species) called 7. furcata, abundant in Florida and the 
West Indies, has not been found in Bermuda, so far as I know. 
