132 PEXNARIID.E. 



consists of two polypites united by a short adherent base, 

 one of them apparently fully grown, the 

 other of small size and with only four 

 knob-like tentacles round the upper ex- 

 tremity (woodcut, fig. 12). It may per- 

 haps be referable to the V. proteus ; at 

 any rate it shows what the perfect form 

 of the genus is. 



The type of the family Pennariidce is the Pennaria of 

 Goldfuss, founded on the Sertularia pennaria of Cavolinr's 

 admirable work (a form that has not occurred on our 

 shores) . 



1. V. HUM ins, Alder. 



Cut. of Zooph. of North, and Durh.," Trans. Trues. F. C. iii. 10U.pl. lii. 

 figs. 1-4. 



Plate XXIII. fig. 1. 



STEM nearly cylindrical, tapering slightly towards the 

 upper part ; POLYPITE w r hite, semitransparent ; oral ten- 

 tacles 5, short and stout ; aboral tentacles 10, rather 

 stout, smooth, about three times the length of the upper. 



Length of body -^ inch. 



Mr. ALDER'S specimen, which lived with him for several 

 days, " was sluggish, holding itself always in a curved po- 

 sition, as represented in the figure/'' The mouth is tubular 

 and prominent ; the upper tentacles which surround it are 

 generally curved inwards; they bear a cluster of small 

 thread-cells on the capitula. 



Hab. On Corallina officinalis in a rock-pool between tide- 

 marks, Cullercoats (J. A.) : Felixstowe (Busk). 



