MUSEUM OF COMPARATIVE ZOOLOGY. 63 



MADREPORARIA. 



Thecopsammia socialis Podrtales. 



Thecopsammia socialis Pourtales, Bull. Mus. Comp. ZooL, 1868, Vol. I. No. 7, p. 

 138; Illustrated Catalogue Mus. Comp. Zool., 1871, No. IV. Deep-Sea Corals, 

 p. 44, pi. 2, figs. 9, 10. 

 DoNCAx, Madreporaria of the Porcupine Expedition, Trans. Zool. 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 tlie Blake, in 1880. 



This species was taken by Mr. Pourtales, on- the Bache, off Florida, in 

 195 to 262 fathoms. It was also taken by the Porcupine E.xpedition, in 345 

 and 363 fathoms, north of Scotland. 



Lophohelia prolifera Edw. & IIaime. 



Madrepora prolifera Pallas, Elench. ZoiJph., 1706, p. 307. 

 Ellis & Solander, Zoopli., 1786, pi. 32, figs. 2, 3, 4, 5. 

 Lophohelia prolifera Edw. & IIaime, British Fossil Corals, 1850, Intr., p. xx. ; Hist. 

 Nat. des Coralliaires, 1857, Vol. II. p. 117. ' 

 Duncan, Trans. Zoul. Soc. London, 1873, Vol. VIII. Part V. p. 328. 

 Pourtales, Deep-Sea Corals, 1871, p. 25, pi. 1, figs. 3, 4, 5 ; Bull. Mus. Comp. 



Zocil., 1880, Vol. VI. p. 107. 

 Ve URIEL, Amer. Jour. Sci., XVI., 1878, p. 377. 



MosELEY, Voyage of the Challenger, Report on the Corals, 1881, p. 178, pi. 6, 

 figs. 7, 8. 

 Lophohelia afjinis Pourtales, Bull. Mus. Comp. Zool., I., 1868, p. 135. 



A single dead sjieciinen of this species was taken by the Blake, at Station 

 216, in 229 fathoms, N. Lat. 32° r, 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 

 Connnission. 



It has long been known from deep water off the coasts of Northern Europe, 

 and from the Mediterranean. It was taken by Mr. Pourtales 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 alnnidance. It was taken in large 

 numbers by the Porcupine Expedition, off the European coasts. Studer 

 records it from 50 fathoms, u[\ INfadeira. 



