REPORT ON CORALS — EXPLANATION OF PLATES. 239 



much enlarged to show the arrangement of the costse. Off Banda Island. 

 60 fathoms. 



Fig. 2. Deltocyaihus agassizi, the attached variety. a, b Views of the upper and 

 under surfaces of the same enlarged. South Pacific Ocean. Lat. 32° 36' S., 

 long. 137° 43' W. 2375 fathoms. 



Fie. 3. Deltocyathus agassizi, attached variety, a The same enlarged. Off the Danish 

 West Indies. 200 to 320 fathoms. Specimen received from Professor G. 

 Lindstrom. 



Fig. 4. Odontocyathus coronatus. a Under surface of the same, b Mouth of calicle. 

 Off Culehra Island, Danish West Indies. 390 fathoms. 



Fio-. 5. Young specimen of Odontocyathus coronatus. a Mouth of calicle of the same. 

 b Under surface of the same enlarged. Off Culebra Island, Danish West 

 Indies. 390 fathoms. 



Fig. 6. Acanthocyathus spinicarens. ct View of the opposite surface of the same speci- 

 men, b Mouth of the calicle of the same, c Enlarged view of the costae of 

 the same. Off the Philippine Islands. Lat, 9° 26' N., long. 123° 45' E. 

 375 fathoms. 



Fio-. 7. AcaMthocyathus clentatus. a View of the opposite surface of the same speci- 

 men, b Mouth of the calicle of the same, c Enlarged view of the costse 

 of the same. Off Kandavu, Fiji Islands. 210 fathoms. 



Fig. 8. Cyathoceras rubescens, attached to a dead specimen of the same species ; side 

 view of the calicle. a View of the broader aspect or face of the calicle of 

 the same specimen, b Mouth of the calicle. c Enlarged view of the costal 

 of the same. Off the Ki Islands. 126 fathoms. 



PLATE III. 



Fig. 1. Stephanotrochus diadema. a Mouth of the calicle of the same, b Under sur- 

 face of the same, c Tip of one of the exsert primary septa and its costa 

 much magnified. Off Pernambuco, Brazd. 675 fathoms. 



Fig. 2. Stephanotrochus discoides. a Under surface of the same, b Mouth of calicle. 

 c Portion of the margin of the under surface of the same enlarged to show 

 the form of the costse. Off Pernambuco, Brazil. 675 fathoms. 



Fig. 3. Stephanotrochus nobilis. a Under surface of the same, b Mouth of calicle. Off 

 the Azores. Lat. 38° 30' N., long. 31° 14' W. 1000 fathoms. 



Fig. 4. Stephanotrochus platypus, a Under surface of the same, showing in its centre 

 a small Gasteropod shell to which the coral was primarilly attached, b 

 Mouth of the calicle of the same. Off Sydney, New South Wales. 410 

 fathoms. 



