BRITISH ZOOPHYTES. ]25 



(Linn.), S. setacea (Pall., E. and S., Stew., Hwjg), 

 Aglaophenia setacea (Lamouroux), Pennaria setacea 

 (Ol-en). 



Hab. : Generally distributed. Height 1 — 1 h in. 



This is the " Little Sea-bristle Coralline '' of E. and 

 S. It somewhat resembles the preceding species in 

 general appearance, but is only half the size. It is 

 very delicate, and " its faint shadow cast by the strong 

 light of the summer day on the rock from which it 

 springs, is often the only indication of its presence to 

 the collector.^' There are two joints between each 

 calycle in this species. The nematophores are nume- 

 rous, there being four to each calycle, one pair side by 

 side above it, and another pair in a line below it. 



3. P. CAiaARiNA, Johnston. 



Aglaophenia Catharina [Gray), ? Sertularia secunda- 

 ria {Cavolini) . 



Hab. : Generally distributed in deep water. Height 

 3 or 4 in. Mr. Mcintosh (St. Andrew's Fauna) has 

 found this as high as 7 in. 



This species grows in clusters, and is remarkable for 

 the fact that the pinnee are exactly opposite. The 

 nematophores are also highly developed, and those 

 attached to the sides of the calycles are mounted on 

 peduncles. The internodes on the pinnte bear alter- 

 nately calycles and sessile nematophores, the calycles 

 being separated by two joints. 



Dr. Johnston named this species after his wife. He 

 says, " To this very distinct and elegant species I have 

 taken the liberty of assigning the Christian name of 

 the lady to whom this work (His. B. Z ) is indebted 

 for by far the greater part of its illustrations." And 

 " to whom,'' adds Dr. Landsborough,-" under God, he 



