232 A, E. Verrili— The Bermuda Islands; Coral Reefs. 
The original Lithophyllia multilamella was a young Mussa, inde- 
terminable from the description and figure. The Bermuda speci- 
mens are more likely to be MW. fragilis than any other; Z. spinosa 
Edw. and Haime appears to be the young of fragilis ; I. australis 
was originally based on the young of an Australian species, but the 
australis of Quelch is apparently fragilis. 
The Z. marginata of Quelch was probably my M. multiflora, but 
the real Symphyllia marginata was quite different, as shown by a 
photograph of the type sent to me by Dr. Vaughan.* The latter is 
a large convex mass, with very numerous, mostly circumscribed, 
angular or irregular, flaring calicles, the larger ones 10 to 15™™ broad, 
of moderate depth, with unusually thin, narrow, and fragile septa, 
loosely arranged, so as to leave wide open spaces between them, 
those of the later cycles being extremely delicate ; the denticles are 
Figure 85.—Orbicella annularis, nat. size. Phot. by A. H. V. 
long and slender, but irregular, 12 to 15 or more on the larger septa, 
becoming smaller distally. The septa are thickened at the wall and 
the ends seem to have been narrow or falcate and considerably 
exsert, but they are mostly broken off. The walls are thin, sepa- 
rated by a narrow groove, and apparently by a vesicular exotheca. 
The columella is feebly developed. It is probably a valid species, 
distinct from all those recorded from Bermuda. It resembles some 
of the larger specimens of fragilis more than any other Bermuda 
species, but the latter rarely if ever has so many of the calicles cir- 
cumscribed, nor so small, nor the septa so narrow and _ loosely 
* For critical remarks on most of their other types, see pp. 223-226. 
