12 THOMSON, The Pennatulaceae of the Cape of Good Hope. 



six smaller points. The stalk is brick-red or orange-red, 

 the rachis dark red, and the autozooids and siphonozooids 

 yellow or white. The rachis has no trace of a ventral 

 groove, and the autozooids are completely radially 

 arranged. 



Actinoptiluvi 1 nolle, Kiikth. 



Pieter Faure, No. 13,103 A. Off Beacon east of East 

 London, N.W. J W. 6\ miles. Taken by shrimp trawl. 

 Depth, 42 fathoms. Nature of bottom, sand with black 

 specks. Date, July 24th, 1901. 



A beautifully expanded white, almost transparent, 

 specimen ; with a simple lens one can easily see the 

 pinnules, the mesenteries, mesenterial filaments, and the 

 long stomodaeal part. The autozooids are very definitely 

 arranged in longitudinal and transverse rows. Between 

 every two autozooids in a longitudinal row there are 8-12 

 siphonozooids ; the latter are slightly raised above the 

 surface of the coenenchyme. The stomodaeal part of the 

 autozooids is retractile within the calyces, but the tentacles 

 appear at the opening. There are no spicules in the 

 anthocodiae nor in the calyces. The tentacles have 20-24 

 pairs of pinnules. The dimensions of the single specimen 

 are as follows : — 



Entire length 76 mm., length of rachis including pro- 

 jecting autozooids 67 mm., length of stalk 9 mm., breadth 

 of rachis at its widest part excluding projecting auto- 

 zooids 16 mm., length of expanded autozooids including 

 calyx 12 mm., length of calyx 8 mm., expanded tentacles 

 of the autozooids about 3 mm. in length, diameter of 

 spread of tentacles about 7 mm., diameter of calyx at 

 base about 3 mm., diameter of siphonozooids 0368 mm. 



The pinnules of the tentacles are very long and narrow 

 when extended ; there are about twenty-one pairs in each 



