LIST OF HYDROMEDUS^. 143 



Fauna, IV., p. 406. 

 Phialidium cijmbaloideum (Van Beneden). 



P.Z.S., 1896, p. 491. 

 Phialidium temporarium, Browne. 



P.Z.S., 1896, p. 489. 

 = Phialidium variabile, Haeckel. 



Fauna, IV., p. 409. 

 Saphenia mirabilis (Wright). 



Fauna, IV., p. 410 ; P.Z.S., 1896, p. 493. 

 Tiaropsis multicirrata (Sars). 



Fauna, IV., p. 406. 



Notes on the Medusae taken in April, 1896. 



Margelis ramosa. A young stage with 3 to 4 tentacles 

 in each of the four groups. The oral tentacles twice 

 dichotomously divided. 



Margellium octopunctatum. All young stages with 

 medusa-buds upon the manubrium. 



Phialidium cijmbaloideum. Young stages usually hav- 

 ing four perradial tentacles ; a few, however, showed the 

 commencement of the four interradial tentacles. 



Umbrella about 2 to 3 mm. in length and width, which 

 is about twice the size of specimens belonging to a similar 

 stage taken in Valencia Harbour, Kerry. The sudden 

 increase in the number of specimens of the two species of 

 Phialidium on 16th of April I am unable to account for. 



Phialidium temporarium. All young stages, mostly 

 with four tentacles. Umbrella about 1 mm. in diameter. 



Podocoryne camea. A young stage not long liberated 

 from its hydroid. It is possible that the medusae which 

 I have described as Cytceandra areolata (Fauna, IV., p. 

 390) may be the later stages of a medusa budded off from 

 one of the species of the hydroid Podocoryne. 



Tiaropsis multicirrata. All the specimens belonged to 

 young stages. Umbrella about 1 to 3 mm. in diameter. 



