456 DR A. MILNES MARSHALL AND MR G. H. FOWLER ON 



leaf, and is slightly (naturally) distorted ; the other, which has lost the extreme 

 end of the stalk, and in which the leaves are formed of 6-7 autozooids, is, 

 except for the smaller size of the siphonozooids, closely similar to the specimens 

 described and figured by Marshall (5), p. 123, pi. xxi., xxii. Neither present 

 any special features. 



Pennatula phosphor ea (L.), var. lancifolia, subvar. variegata (Koll.). 



Two complete specimens, of length 97 cm. and 9 5 cm., were obtained in 

 1869 from Station 52 and from Loch Scavaig respectively. The rachis and 

 stalk are very thin-walled and fleshy. The upper 2*5 cm. of the larger speci- 

 men are bent sharply downwards, not, apparently, as the result of accident, as 

 the specimen could not be straightened without damage. 



Koll. (3), p. 130, pi. viii. fig. 70 ; ix. fig. 73. 



Pennatula rubra (Ell.). 



Two fragments, in length 2 cm. and 11 cm. respectively, and consisting of 

 the upper part of the rachis only, were obtained, with Pteroides griseum, from 

 Tangier Bay. The larger specimen has thirteen pairs of leaves, formed of 32-40 

 autozooids. The general appearance is more compact than in Kolliker's 

 figure. 



Koll. (3), p. 135, pi. ix. figs. 74, 75 ; Carus (4), p. 63. 



Pennatula phosphorea, var. Candida, n., PI. XXXI. figs. 1, 2; and PL 

 XXXII. fig. 3. 



Of this new variety three fragments, all incomplete, were dredged at Station 

 61 in 1869. Two of these consist of the upper part of the rachis — the one much 

 crushed, the other, of which the dimensions are given below, sufficiently well 

 preserved to be figured. The third is a fragment from the middle of the 

 rachis. 



The colony is white throughout, the spicules, which are everywhere present, 

 being entirely colourless. In many respects the specimens might have formed 

 simply a white subvariety of var. aculeata, with which they have many charac- 

 ters in common. The shape of the leaves, however, and their diminutive basis, 

 point to its being an intermediate form between the varieties aculeata and 

 angustifolia, and as such we have introduced a new name for it. 



On the dorsal surface is a deep median groove, free from siphonozooids ; a 

 similar but much shallower one was figured by Marshall (5), pi. xxi. fig. 5, 

 in P. pjltosphorea, var. aculeata. 



The autozooids, 7-9 in number, agree in appearance with those of other 

 species of Pennatula, and are arranged in a single series. They possess very 



