228 A. E. Verrill—The Bermuda Islands; Coral Reefs. 
Dana’s original type of dipsacea, which I have seen, was not 
mature. It had narrower calicles than the adult (mostly 12 to 18™™), 
but the denticles are pretty regularly triangular, or saw-tooth 
shaped, and not very numerous. Dana’s figure, also, represents them 
of this form. Specimens like the type are common at Bermuda. 
Var. aster, nov. Figure 81. 
See these Trans., xi, pl. xx, fig. 2, 1901, for type. 
It seems desirable to retain a varietal name for those forms that 
have unusually large, often circumscribed, and generally shallow 
calicles, like those illustrated in the figure referred to. They may 
be called var. aster, alluding to the appearance of the expanded 
polyps, which resemble certain varieties of ‘China Aster” of the 
gardens, both in form and colors. 
The septa are numerous and rather thick ; the principal ones bear 
strong, rather regular, and mostly triangular teeth. The calicles 
may be 25 to 35™™ in diameter. 
Mussa (Symphyllia) annectens Verrill. Cactus Coral. Figure 82. 
These Trans., xi, p. 178, pl. xxxv, figs. 1, 2, 1901. 
This is a comparatively rare species, probably best at home on the 
outer reefs, though originally found on the inner ones, off Hamilton 
é 
Figure 82.—Mussa annectens; forms of larger septa of type, enlarged; a-b, 
septa with typical Mussa denticles; e, f, septa with Jsophyllia denticles ; 
ec, d, intermediate forms ; g, h, marginal septa with costal spinules. Drawn 
byAa EL” Vie 
Harbor, where it is rare. It is a much heavier and coarser species 
than the others, with much larger and longer teeth on the stout 
distal part of the exsert radial septa; the upper ones are generally 
the largest and longest. 
