109 



Anthoptilum decipiens, u. sp. Plate VII. fig. 8. 



This species is represented by a long substantial colony arising from a strong 

 basal expansion. The total length is 720 mm., and the stem tapers from 4-2 

 mm. in breadth. 



The stalk is short and conical ; it expands gradually from its junction with 

 the rachis downwards, and has a large knob in the centre of the base. The base 

 thus resembles a " tarn o' shanter" ; or, to put it in another way, the stalk ends in 

 a large knob, but before reaching the knob it expands into a large collar-like fold. 



The rachis is very long, and is covered with a large number of autozooids in 

 oblique rows, from three to eight in each row. The autozooids are fused for a 

 very short distance upwards from their base, thus producing distinct though 

 rudimentary pinnules. These are placed at a very small angle to the long axis 

 of the rachis, and the upper end reaches often to the pararachidial surface. Their 

 arrangement is somewhat perplexing, as there is distinct overlapping. Two occur 

 almost opposite one another, and a third distinctly overlaps their insertion. 



The autozooids are very long (10-25 mm.), thin walled, and packed with 

 reproductive bodies which shine through the thin walls and give the polyps an 

 appearance suggestive offish-roe. (See Plate VII. fig. 8.) 



The siphonozooids occur on the pararachidial and metarachidial surfaces, 

 extending on to the bases of the rudimentary pinnules in small somewhat triangular 

 areas insinuated between two adjacent autozooids. They also occur on the pro- 

 rachidial surface, with the exception of a narrow median strip. 



The spicules of the coenenchyma at the lower end of the stalk are very minute 

 rods (0-0056 mm. in length), which may be collected together to form star-shaped 

 groups. 



There are no spicules on the rachis or on the autozooids. 



The most noteworthy features of this species are : 



1. The perfect though rudimentary pinnules. 



2. The peculiar overlapping arrangement of the pinnules. 



3. The shape of the basal expansion with its knob-like termination into 

 which the end of the axis extends. 



Locality : Station 284 ; T 55' N., 81° 47' E. ; 506 fathoms. 



Family Fvnicvlinidm. 



Subfamily Funiculininfe : 



Funicxdina quadranyularis {Vii\].) = Lc2>t02)tUum gracile, Kolliker. 



Funicidina gracilis, u. sp. 

 Subfamily Stack yptilid<«. 



Stachyptilum maculatum, n. sp. 



