REPORT ON CORALS 
HYDROCORALLIN 2. 79 
home off the coast of Norway, viz., Allopora oculina, obtained by G. O. Sars in from 
50 to 100 fathoms, and Stylaster gemmascens, which occurs at great depths in the 
Foldenfjord. The same species, originally described from the Indian Ocean, occurs in 
the North Atlantic in 530 fathoms. Stylaster roseus is abundant in a depth of 2 feet 
below low water mark on the coast of Cuba,’ and Stylaster punctatus occurs in 9 
fathoms off Florida.’ Stylaster sanguineus occurs at Florida and New Zealand, and I 
dredged a closely alhed, if not the same, species in 2 fathoms on the Philippine coast. 
Cryptohelia came originally from New Guinea. It was dredged by the Challenger 
in all parts of the world, and up to a depth of 1530 fathoms. Some genera, as 
Sporadopora and Spinipora, are as yet known only from one locality, but no doubt 
their range will be extended by further dredging. 
No Stylasteride are known from geological deposits older than the Tertiary ; indeed, 
a single species only of one genus, Distichopora, had until lately been described as occur- 
ring in the fossil condition, viz., Distichopora antiqua from Tertiary beds at Chaumont, 
in France. Fossil Stylasteridee have, however, been confounded with Bryozoa, just as 
Gray confounded the recent Labiopora with Porella. Two species of a genus termed 
Dendracis, figured by Fr. A. Romer,’ which occur in the Oligoccene of Lattorf, are 
evidently Stylasterids, and probably members of the genus Allopora, in which they 
have been introduced in the present paper in the list of species, as Allopora tuberculosa 
and pygmea. Some calcareous structures from the Cenoman (= middle chalk) figured 
by the Ritter von Reuss, in the same publication as that containing Rdmev’s paper,’ 
and placed with Heteroporella as Bryozoa, may very possibly prove allied to Pliobothrus 
on further examination. Thalamipora,’ figured by the same author in the same paper, 
seems to be a Stylasterid bearing large female ampulle, present in abundance and 
agglomerated, the pore systems being all at the ends of the branches, whilst a deep 
central gastropore in each system is surrounded by a circlet of from five to seven 
dactylopores. Von Reuss is in great doubt as to the affinities of this form, but 
concludes that it is a chambered foraminifer. It is probable that now that their 
importance and structure is more fully known, abundance of fossil Stylasteride will be 
made out. The structure of the Stylasteride appears to throw no light upon that of 
the Graptolites. 
1 Pourtalés, Deep-Sea Corals, p. 83. * Ibid., lc. p. 36. 
3 Fr. A. Romer, Beschreibung der Norddeutschen tertiaren Polyparien; Meyer, Paleeontographica, Bd. ix. p, 243, 
taf. xxxix. fig. 15, a, b, ¢. 
4 Ritter von Reuss, Die Bryozoen des unteren Pliner’s ; Palaeontographica, Bd. xx., taf. xxxiii. 
5 Ibid., p. 138. 
