BOUGAINVILLIA MUSCUS. Ill 



in extreme extension nearly cylindrical, protected at the 

 base by a membranous corrugated cup, into which about 

 a third of the body is withdrawn when contracted; GO- 

 NOPHORES pyriform, on distinct peduncles, invested by 

 a delicate cliitinous capsule, springing from the upper- 

 side of the ramules, along which they range almost from 

 end to end. 



GONOZOOID. UMBRELLA (at the time of liberation) deep 

 bell-shaped, with a well-developed velum, measuring 

 about ^Q inch across its base ; MANUBRIUM subcylindrical, 

 somewhat dilated at its base, of moderate size ; RADIA- 

 TING CANALS terminating in bulbs, containing red pig- 

 ment-granules, at the root of every tentacle a black 

 eye-speck. 



THE foregoing description is based on Prof. Allman's 

 papers. I have not had the opportunity of examining 

 this species, which differs very slightly from the B. ramosa. 



The following are the distinctive points : The polypite 

 of B. fruticosa when extended is of a more cylindrical and 

 slender form ; the membranous cup is smaller, covering 

 only about one-third of the body, whereas in B. ramosa it 

 almost entirely conceals the polypite during extreme con- 

 traction; and the reproductive buds are borne along the 

 whole of the upper surface of the ramules, instead of 

 occurring in pairs or small groups a little behind the free 

 extremity. The goiiozooids of the two forms seem to be 

 identical. 



Hub. Growing in abundance on a piece of floating tim- 

 ber in the mouth of the Kenmare River, co. Kerry (G. J. A.) . 



3. B. MUSCUS, Allmau. 



PERIGONIMUS MUSCUS, Allman, Ann. N. H. for Jan. 1863. 

 BOUGAINVILLIA MUSCUS, Allman, Ann. N. H. for May 1864. 



STEMS about half an inch in height , simple , springing at hi- 



