77. PRIMNOELLA. 49 



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

 smaller example has been deposited in the British Museum." 

 Johnson, I. c. 

 ffab. Madeira. 



Fig. 14. 



Stenetta imbricata. 

 I). Cells close side by side, forming rings round the stem and branches. 



76. NARELLA. 



Coral fan-like; branches cylindrical, dichotomous. 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. $ Michel. Coratt. Antilles, p. 17, 1. 1. f. 12, 

 13 ; Kolliker, Ic. Hist. p. 135, t. 17. f. 13. 



Hob. Guadaloupe. 



77. PRIMNOELLA. 



Coral simple, elongate, cylindrical. 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. 



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



