MUSEUM OF COMPxVRATIVE ZOOLOGY. 63 



MADREPORARIA. 



Thecopsammia socialis Pourtalks. 



Thecopsammia socialis PouRTAr>ES, 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. 

 Duncan, 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 the Blake, in 1880. 



This species was taken by Mr. Pourtales, oir the Bache, off Florida, m 

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

 and 363 fatlioms, noi th of Scotland. 



Lophohelia prolifera Edw. & Haime. 



Madrepora prolifera Pallas, Elench. ZoiJph., 1766, p. 307. 

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

 Lop/whclia prolifera Edw. & Haime, British Eossil Corals, 1850, Intr., p. xx. ; Hist. 

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

 Duncan, Trans. ZoOl. 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. 



Zo51., 1880, Vol. VI. p. 107. 

 Vekrill, Amer. Jour. Sci., XVI., 1878, p. 377. 



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

 figs. 7, 8. 

 Lophohdia ajfinis Pourtales, Bull. Mus. Comp. Zool., I., 1868, p. 135. 



A single dead specimen of this species was taken l)y the Blake, at Station 

 216, in 229 fathoms, N. Lat. 32° 7', W. Long. 78° 37' 30". 



Two specimens have been obtained by the Gloucesti^r 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 Rock.s, 

 in 100 fathoms; off Nightingale Island, in 100 to 150 fathoms. At the last- 

 named locality fine specimens occurred in alnindance. It was taken in large 

 numbers T)y the Porcupine Expedition, (^ff the European coasts. Studer 

 records it from 50 fathoms, nff ]\bxd(n'ra. 



