CHAP, iv ] THE CRUISES OF THE 'PORCUPINE.' 



169 



Eive species of Amphihelia are cited by Professor 

 Martin Duncan from the ' Porcupine ' expedition : 

 A. profunda, POURTALES ; A. oculata, L. sp. ; A. mio- 

 cenica, SEGUENZA; A. atlantica, n. sp. ; and A. ornata. 



Fra. SO.Lophoheliaprolifera, PALLAS (sp.). Three-fourths the natural size. (No. 26.) 



n. sp. ; and on one or two occasions, chiefly on"'the 

 verge of the cold area, the hempen tangles involved 

 some elegant fragments of the stony coral Allopora 

 oculina, EHRENBERG (Fig. 31). 



