A. EF. Verrill—The Bermuda Islands; Coral Reefs. 267 
irregular simple and lobulated tubercles or verruce, arranged in 
three or four crowded rows ; the innermost tubercle of each, situated 
close to the base of a tentacle, is usually simple and a little larger 
than the rest, like a special acrorhagus, especially in young speci- 
mens, in which it is often conspicuous. 
The tentacles are moderately long, rather slender, about 48 in the 
adult specimens. The upper part of the column bears rows of dis- 
tinct suckers, which do not reach the basal portion, but disappear 
about mid-height. Ordinary specimens are about 2 inches high and 
the column is about 1 inch in diameter, but the column can extend 
to a much longer form when in its burrow. The width across the 
expanded disk and collar may be 2 inches or more. The color is 
variable, but most commonly the lower part of the column is trans- 
lucent flesh-color or whitish, with the white mesenteries showing 
through as pale lines; distally the color grows darker, the upper 
part often beconfing orange-brown or burnt-umber, specked with 
flake-white and darker brown. The verruce of the pseudofronds 
are usually similar to the column in color, but paler and with more 
white spots. One specimen had twelve radii of reddish brown on 
the collar surface. Tentacles usually translucent grayish, greenish, 
or whitish, with obscure streaks of brown, and with transverse 
blotches and many specks of flake-white. 
This species is viviparous. One specimen, taken in April, 1901, 
when put into formalin, gave birth to about a dozen well developed 
young ones, from 2 to 6™™ in diameter of column, as contracted. 
The larger ones had the essential characters of the adult, with 12 
to 24 tentacles, and with corresponding distinct prominent acrorhagi, 
representing the pseudofronds of the adults, but simple, bilobed, or 
with very few minute lobules ; suckers of the column were present. 
It is found, also, in the West Indies. 
The colored figure of the Bahama form published by MeMurrich 
(1889, pl. ii, fig. 2) does not agree well with our specimens in 
respect to the pseudofronds, which appear too wide and too finely 
divided, perhaps due to inaccurate drawing. But McMurrich, in his 
last paper, 1905, identifies the specimen with this species, after a 
reéxamination. 
MeMurrich there adopts Actinostella Duch., 1850, for this genus. 
The type of Duch. was A. formosa, sp. nov... But the genus and 
species were then so imperfectly described as not to be recognizable 
by subsequent writers. Indeed, in Duchassaing’s later work (Duch. 
and Mich., 1860), neither the genus nor the species is referred to. 
