ASTIUEACEA. SAGARTIADJi. 



THE WARTED CORKLET. 



Phellia gausapata. 



Plate VII. fig. 1. 



Specific Character. Epidermis dense ; firmly adherent throughout ; warted. 

 Phellia gausapata. Gosse, Annals N. H. Ser. 3. ii. 194. 



GENERAL DESCRIPTION. 

 Form. 



Base. Adherent to rocks : scarcely exceeding column. 



Column. Cylindrical, pillar-like when expanded ; smooth in extension, 

 but in contraction becoming coarsely corrugated, so as to present large 

 irregularly rounded knobs or warts. To this a dense epidermis is firmly 

 adherent throughout, having no free margin ; and, being modelled on it, 

 it is covered with coarse warts or knobs ; " resembling, when contracted, a 

 straw bee-hive." (C.W.P.) 



Dish. A deep cup or funnel. 



Tentacles. Sixteen, arranged in two rows, eight in each : those of the 

 first row twice as thick and long as those of the second, with which they 

 alternate ; variable in form, sometimes being conical and pointed, at others 

 short, rounded, and even slightly inflated at the tips. 



Mouth. Not raised on a cone : lip thickened " as in dianthus." 



Acontia. Freely discharged from the base ; long and very slender. 



Colour. 



Column. Exposed portion pellucid white, with sub-opaque whitish longi- 

 tudinal streaks. 



Epidermis. Pale yellowish, with darker warts ; the separation of which 

 in extension causeB the general tint to appear lighter, and vice versd. 



Disk. (No note has been taken of its colours.) 



Tentacles. Pellucid drab, with the lower part and a broad ring near the 

 tip dark brown, undefined : probably there is also an intermediate ring of 

 paler brown. 



Size. 



Diameter of column half an inch ; height three-fourths of an inch. 



Locality. 

 Rocks at low-water : extreme north-east of Scotland. 



