POLYNESIAN PORITES. 101 
The calicles are crowded, angular, “ plano-conical,” 1°5 mm. in diameter. The walls are 
very thin and somewhat ragged. The septa are very thin and acute, wavy, and with irregular 
edges, like those of the wall. They run in to join a small central columellar tangle. The 
pali are quite obscured. 
This description is based upon Dana’s figures and partly on his text. His description of 
the growth-form is not easily reconcilable with his figures. I have, therefore, followed the 
latter. 
The thin-walled angular calicles, very uniformly distributed with obscured pali, are 
features which, coupled with the fact that the form comes from the Sandwich Islands, leads 
me to expect that the calicles were of the type of those in Nos. 5, 6, and 7, all of which, as we 
have seen, have a strong family likeness. 
This form ought to be easily re-discovered. A somewhat similar form is described, but 
without figures, from Laysan, by Professor Studer (see Zool. Jahrb. xiv. (Syst.) (1901) p. 421). 
84. Porites Sandwich Islands 4. (P. Hawaiensis quarta.) 
[Sandwich Islands, coll. A. Garrett ; 2 ] 
Syn. Synarea irregularis Verrill, Bull. Mus. Comp. Zool. i. (1864) p. 43. 
Description.—The corallum “forms large irregular masses, consisting of numerous angular, 
uneven, and crowded branches, often nodose at the ends, and much coalesced, giving a rough 
eroded appearance to the mass.” 
The calicles are larger than in P. Society Islands 3, with “prominent, slender pali, 
columella rudimentary, often wanting. Surface covered with slender, prominent, often toothed 
granulations, which are rather loosely arranged. Colour, deep umber-brown.” 
Without any figure, it is difficult to make much of this description. The coral appears, 
from the shape of its branches, to have been a ccenenchymatous form, and if so, it is the only 
one, so far known, from the Sandwich Islands. 
85. Porites Sandwich Islands 95. (P. Hawaiensis quinta.) (PI. IX. fig. 8.) 
[Honolulu (1-2 fathoms), coll. H.MLS. ‘Challenger’; British Museum. | 
Syn. P. bulbosa Quelch, Chall, Rep. xvi. (1886) p. 180, pl. xi. figs. 7, 7a. 
Description.—The corallum forms clusters of short, thick stems, diverging fairly uniformly 
at angles of 45°; they are 4 to 5 cm. long, and 2 to 2°5 cm. thick; about half-way up they 
are regularly constricted. Above the constriction they swell prior toforking. The forking tips 
are often quite flat across the top. The flat top sinks in along a furrow preparatory to forking. 
The consecutive forkings are at short distances apart. The living layer is 6 to 7 cm. deep. 
