y 



from 12 to 14 mm. in length, with the posterior part of the body long and smooth, and forming a cell in which the anterior 

 part admits of being retracted. The anterior part of the body bell-shaped, grooved lengthwise, and with short, thick tentacles. 

 The basal part, the posterior and anterior parts of the body, the tentacles and their pinnules, all furnished with spicules, that 

 chiefly consist of warty spindles and clubs. The tentacles with an abundance of nematocysts. Colour a beautiful violet. 



Clavularia arctica, n. sp. 



Tab. III, figs, 25—35. 



Specific Character. 



The zoanthodeme without any trunk. The basal part thin, riband-shaped, expanded. The polyps disposed 2 or 

 3 mm. apart; from 10 to 12 mm. high, deeply grooved longitudmally, and but little dilated at the base. The posterior part 

 of the body cylindric; the anterior retractile and ventricose, as also abundantly furnished with spicules, among which occur 

 some of a variously modified cruciform appearance, both on the posterior and the anterior parts of the body. 



Clavularia Stormi, n. sp. 



Tab. VI. 



Specific Character. 



The zoanthodeme without any trunk. The basal part thin, partly riband-shaped, partly membranaceous expanded. 

 The polyps, widely separated, are in spirit specimens 5 mm. long and 1.5 mm. broad at the base. The posterior part of the body 

 very considerably folded lengthwise; and abounding in spindleshaped, cruciform, and furcated spicules. The anterior part of 

 the body admitting of being wholly retracted within the posterior part, is more slender, somewhat folded longitudinally, smooth 

 and without spicules up to where it passes into the oral disk or tentacular base, where a few minute spicules are observed. 

 The tentacles, as a rule, without spicules. 



