20 THOMSON, The Pennatulaceae of ~ tJie Cape of Good Hope. 



species of the genus Pteroeides have been recorded from 

 the African coast or from the Indian Ocean. Pteroeides 

 brachycolon, Koll, has been recorded from Zanzibar, Pt. 

 pmlchellum, Th. and H. from the Wasin Canal, E. coast of 

 Africa, and Pt. robiistum, Th. and Simpson from the 

 same locality. 



Umbellula aciailifera, sp. n. 



Pieter Faure, No. 17,026. Cape Point (100 — 900 

 fathoms) N.E. by E. \ E., 46 miles. Bottom, green mud. 

 Date, July 21st, 1903. 



A solitary specimen was procured from this locality, 

 the dimensions of which are as follows : — 



Length of colony probably about 460 mm., length of 

 lower expanded part of stalk 50 mm., length of a long 

 autozooid 33 mm., length of body of autozooid 26 mm., 

 approximate length of tentacle 8 mm., breadth of axis 

 3 mm., number of autozooids in apical rosette 10, length 

 of needles of tentacles 0*294 mm., length of corpuscles of 

 stalk 010 mm., diameter of siphonozooid about 010 mm. 



The stalk has an enlargement at the upper end con- 

 tinuous with the rachis and another expansion at the 

 lower end. Owing to the stalk having been broken, the 

 relative dimensions of this lower expanded part of the 

 stalk cannot be given. The stalk is obviously quad- 

 rangular externally in its upper part, but lower down it 

 tends to become rounded, though even at this part if a 

 rough section is made the axis is seen to be quadrangular, 

 with, however, a tendency to a circular or oval form. The 

 stalk slightly beneath the apical rosette of nine auto- 

 zooids, which surround a more or less central one, is com- 

 pressed bilaterally. It has a curious bend by which these 

 apical autozooids are disposed almost at right angles to 

 the lower stalk. One cannot, however, lay stress on this 







