117 



The autozooids are densely crowded on the metarachidial edge of the pinnule. 

 They are somewhat bell-shaped, and stand on a short peduncle, which in the case 

 of the autozooids on the upper pinnules passes through the same colour scheme as 

 in those of Pennatula veneris, but in the lower pinnules the peduncles are uniformly 

 dark red. There are no projecting spines or points in the autozooids, which are 

 arranged so closely that they appear to he in two or three rows. The tentacles 

 are short, white in colour, and have no hand of red spicules on the aboral 

 surface. 



The siphonozooids form broad bauds which extend upwards between the 

 pinnules on the pararachidial surfaces, but their lower ends extend so far 

 down as to form a distinct baud on the prorachidial margin of the lateral 

 surfaces. 



The following measurements were taken : 



o 



Breadth of rachis near base, 3 mm. ; near tip, 1 '8 mm. 

 Length of well-developed pinnule, 23-25 mm. 

 Breadth, 12 mm. ; about G mm. near base and tip. 

 Number of autozooids, 51 + 10 (19 near base, 45 near tip). 



The spicules of the pinnules and autozooids are somewhat flattened ovals or 

 ellipses, brownish in colour ; the following measurements were taken of length 

 and breadth in millimetres : 



0-04x0-02; 0'03x0'04; 0'029xO-04. 



They are not so much constricted at the middle as in Pennatula veneris. 

 This species differs from Pennatula veneris in the following details, although 

 they show a remarkable superficial resemblance. 



1 . The lower pinnules are different in shape, not having any trace of the whip- 



like development of the terminal autozooid. 



2. The colour of the pinnules is different, the lower being dark red, the upper 



and more developed being white to greyish. 



3. There are no bands of red spicules on the aboral surfaces of the 



tentacles. 



4. The lower ends of the siphonozooid-bands fuse and form a continuous band 



or strip on the prorachidial margin of the pararachidial surfaces. 



Locality : Station 239 ; 11 49' 30" N., 92' 55' E. ; 55 fathoms. 



