the Zoophytes of South Devon and South Cornwall, 75 



form to which I have assigned Gaertner's classical name is 

 distinguished by its sparingly branched, closely annulated 

 stems, and its long linear polypites, with very numerous ten- 

 tacles. It prefers the higher and smaller pools, while G. vagi- 

 nata usually fringes the sides of the larger and deeper pools, 

 nearer to low-water mark, amongst a luxuriant growth of 

 Algae. 



Genus Syncoryne, Ehrenberg (in part). 



8. eximia^ Allman. 



Salcombe Bay, dredged on stones, sponge, &c. ; abundant. 

 The Devonshire specimens were inferior in size to those 

 which I have obtained from the Durham and Yorkshire coasts, 

 but richly coloured and (in May) profusely laden with gono- 

 phores. 



8. pulchellaj Allman. 



Salcombe, North Sands, in rock-pools. The polypites were 

 of a watery-white colour, with occasionally a slight tinge of 

 orange. Gonophores were obtained towards the close of May. 



Genus Gymnocoryne, nov. gen. 



Gen. Char. Polypites clavate, sessile, rising immediately 

 from a filiform stolon, invested by a delicate chitinous poly- 

 pary ; tentacula capitate, very numerous, the uppermost fur- 

 nished with large capitula and forming a circle round the oral 

 extremity, the rest scattered over nearly the whole of the body. 

 Reproduction unknown. 



This interesting form differs from Coryne^ as Clava from 

 Tuhiclava^ in the absence of a distinct stem clothed with a 

 polypary ; the polypites are truly sessile. I have not been 

 able to satisfy myself that there is even a slight sheath of 

 chitine, as in Clava, round the base of the body. If such a 

 structm-e exists, it must be of the most filmy and rudimentary 

 character. 



Another point in which this genus differs from Coryne is the 

 disposition of the uppermost tentacles in a perfect circle (usually 

 consisting of 8) round the oral extremity of the body (PL V. 

 fig. 1,«). They have thicker stems and much larger capitula 

 than the rest of the tentacles, and constitute a single verticil 

 closely resembling that of Clavatella when in a state of con- 

 traction. Nothing of this kind occurs in Coryne : the oral 

 tentacles, indeed, are frequently larger than the rest; but they 

 are never disposed, as in Gymnocoryne, in a regular wreath so 

 as completely to encircle the body a little below the mouth. 



6* 



