the Zoophytes of South Devon and South Cornioall. 77 



small basins on the higher blocks of rock. In May the gono- 

 zooid was obtained, laden with gemmse in various stages of 

 development. One specimen occurred with seven arms (six 

 being the more usual number), and bore seven buds — two 

 very fully developed, two more with the lobes formed, and 

 three in a very rudimentary state. On one of the young, 

 buds were already forming. The zooid seemed less active in 

 its habits than later in the season, when not burthened by so 

 heavy a load. 



Family Eudendriida. 



Genus EuDENDRiUM, Ehrenberg, 



E. ramoswrrij Linn, 



Note. — The polypites of this species are furnished with a 

 number of bosses, composed of thread-cells piled together, 

 which are ranged in a circle round the body, about halfway 

 between the base and the tentacles. 



E. capillare, Alder. 



Additional habitat : Salcombe Bay, not uncommon j gono- 

 phores abundant in May. 



Family Atractylidae. 

 Genus Perigonimus, Sars. 

 P. repens^ T. S. Wright. 

 Salcombe Bay, on Turritella &c., and in rock-pools. 



P. serpens^ AUman, 



" On the stems of Plumularia setacea, from about 12 fathoms, 

 Torbay" {Alhnan). 



P. coccineus, T. S. Wright. 



I refer to this species a Perigonimus, obtained at Salcombe, 

 which seems to agree on the whole with Wright's description. 

 It is larger than P. serpens, and the polypary not so delicate 

 and yielding ; the body does not rise, when extended, high 

 above the top of the stem and assume a slender cylindrical 

 form, as in the last-named species. The colour is red, very 

 vivid just below the arms, but becoming much paler below. 

 The tentacles are twelve in number and colourless ; Wright gives 

 only eight in P. coccineus. The stem tapers slightly down- 

 wards. For safe identification we require much fuller and 

 more precise descriptions of many of the minute Hydroids 

 than we have yet obtained. 



