/ /. PRIMNOELLA. 49 



branch, near the base, has a diameter of one-fifth of an inch. The 

 smaller example has been deposited in the British Musenm." — 

 Johnson, I. c. 



Hah, Madeira. 



Fi^. 14. 



Stenella imhricata. 

 D. Cells close side hy side, forming rings roimd the stem and branches. 



76. NARELLA. 



Coral fan-like; branches cylindrical, dichotomons. Bark thin, 

 white, fugacious, composed of small, thin, angular, plate-like spicules. 

 Cell papilionaceous, whorled ; whorls forming cylindrical rings round 

 the stem. 



154. Narella regularis. 



Primnoa regularis, Duchass. S^- Michel. Corall. Antilles, p. 17, 1. 1. f. 12, 

 13 ; Kolliker, Ic. Hist. p. 1.35, t. 17. f. 13. 



Hctb. Guadaloupe. 



77. PRIMNOELLA. 



Coral simple, elongate, cj-lindrical. Axis continued, stony. Bark 

 granular, smooth. Polypiferous cells numerous, close-pressed, sub- 

 cylindrical, regular, small, placed in close regular circles, each con- 

 taining many cells round the stem ; each cell covered with two series 

 of small imbricate scales. 



Priumoella, Gray, P. Z. S. 1857, p. 285 ; 1859, p. 483. 



E 



