BY R. VON LENDENFELD, PH.D. 353 



shrub-like. The Polypes on which the male and the female 

 genital products ripen soon get rudimentary. The male and 

 female Polypostyls are similar to each other. Their stems are 

 always short, and they always grow out from the base of the 

 stems, so that they are generally hidden between the undergrowth 

 of other organisms whilst the alimentary zooids which do not 

 become sexual appear high above on the centrifugal branches. 

 All the Polypes, and particularly the clusters of genital products are 

 intensely brick red, and can easily be distinguished by their color. 



The Perisarc is in its greater part smooth and simple cylindrical, 

 only just above the branching places a few rings are met with. 



Compared with other species it appears characterised by its 

 small size, the smoothness of its Perisarc and the colour of 

 the zooids and genital products. E. ramosum Linn6, E. rameum 

 Pallas, E. dispar Agassiz, E. annulatum Norman, and E. racemo- 

 sum Cavalini are very much larger. 



E. insigne Hincks and E. vaginatum Allman have a Pei'isarc 

 which is annulated throughout. In E. tenue A. Agassiz again 

 the ultimate ramuli only are annulated. 



In shape E. capillare Alder and E. arbuscula Wright most 

 resemble our zoophyte, but both these do not possess that intense 

 orange-red colour as E. pusillum. 



From the foregoing species it can readily be distinguished 

 by color, mode of branching, and particulaidy by the male 

 Polypostyls. 



Explanation of Plate. 



Plate VI. — Eudendrium generalis, von Lendenfeld. The formation 

 Polypostyle. 

 Fig. 1. Side view, C. Oc I (1). 

 Fig. 2. View from above, C. Oc I. 



(1.) The figures are drawn with a camera lucida, the lenses used are from 

 Zeiss. 



