MUSEUM OF COMPARATIVE ZOOLOGY. 63 
MADREPORARIA. 
Thecopsammia socialis Pourratés. 
Thecopsammia socialis PourtTaLts, Bull. Mus. Comp. Zodl., 1868, Vol. I. No. 7, p. 
138; Illustrated Catalogue Mus. Comp. Zodl., 1871, No. IV. Deep-Sea Corals, 
p. 44, pl. 2, figs. 9, 10. 
Duncan, Madreporaria of the Porcupine Expedition, Trans. Zoédl. Soc. London, 
1873, Vol. VIII. Part V. 
Four specimens, all dead, were taken at Station 216, in 229 fathoms, N. Lat. 
32° 7’, W. Long. 78° 37’ 30”, by the Blake, in 1880. 
This species was taken by Mr. Pourtalés, on the Bache, off Florida, in 
195 to 262 fathoms. It was also taken by the Porcupine Expedition, in 345 
and 363 fathoms, north of Scotland. 
Lophohelia prolifera Epw. & Haime. 
Madrepora prolifera Patuas, Elench. Zodph., 1766, p. 307. 
Exuis & SoLanpeEr, Zodph., 1786, pl. 32, figs. 2, 3, 4, 5. 
Lophohelia prolifera Epw. & Hatme, British Fossil Corals, 1850, Intr., p. xx.; Hist. 
Nat. des Coralliaires, 1857, Vol. II. p. 117. 
Duncan, Trans. Zo6él. Soc. London, 1873, Vol. VIII. Part V. p. 828. 
PourtaLes, Deep-Sea Corals, 1871, p. 25, pl. 1, figs. 3, 4,5; Bull. Mus. Comp. 
Zo6l., 1880, Vol. VI. p. 107. 
VeERRILL, Amer. Jour. Sci., XVI., 1878, p. 377. 
MosEtEY, Voyage of the Challenger, Report on the Corals, 1881, p. 178, pl. 6, 
figs. 7, 8. 
Lophohelia affinis Pourtatiés, Bull. Mus. Comp. Zodl., I., 1868, p. 135. 
A single dead specimen of this species was taken by the Blake, at Station 
216, in 229 fathoms, N. Lat. 32° 7’, W. Long. 78° 37’ 30”. 
Two specimens have been obtained by the Gloucester fishermen in deep 
water off the coast of Nova Scotia, and by them presented to the U. S. Fish 
Commission. 
It has long been known from deep water off the coasts of Northern Europe, 
and from the Mediterranean. It was taken by Mr. Pourtalés on the Bache, 
off the coast of Florida, in 195 and 315 fathoms, and by the Blake, among 
the Antilles, in 291 and 874 fathoms. By the Challenger it was dredged 
among the West India Islands, in 390 and 450 fathoms; off St Paul’s Rocks, 
in 100 fathoms; off Nightingale Island, in 100 to 150 fathoms. At the last- 
named locality fine specimens occurred in abundance. It was taken in large 
numbers by the Porcupine Expedition, off the European coasts. Studer 
records it from 50 fathoms, off Madeira. 
