General History of the Marine Polyzoa. 143 



'Annals,' October 1884 (p. 276). 



Menipea marg'inata^ sp. n. 



This species must be referred to Caherea riidis of Busk. 



The specimens of it on which my description is founded 

 were to a large extent destitute of vibracula. In the first 

 instance, indeed, I could find no trace of them, and, in the 

 supposed absence of this essential character, was not likely to 

 connect the species with the genus Caherea. 



My attention having been drawn to the remarkable agree- 

 ment of the two forms in many of the structural elements, I 

 have made a careful re-examination of the dorsal surface, with 

 the result that I have detected the vibracular grooves in a 

 limited number of cases, and in some of them to all appear- 

 ance imperfectly developed, whilst in a large number of cases 

 not one was met with upon a branch. Only one or two setas 

 were observed. My specimens show that the vibracular 

 zooids are liable to be veiy partially developed, or, in some 

 cases, even suppressed. 



Busk describes the aperture as " oval ; " it is somewhat 

 contracted above and expanded below. He does not mention 

 the very large size of the marginal cells and of the three 

 spines which they bear. This is a striking feature of the 

 species, as is also the line of large avicularia with broad 

 triangular mandible, each on a distinct area, which alternate 

 with the marginal zooecia. 



Ibid. (p. 279). 



CycLICOPOEA, gen. nov. 

 Cyclicopora prcelonga^ sp. n. 



This species is identical with Lepralia longipora^ Mac- 

 Gillivray *, which was published in 1882, and his specific 

 name must therefore take the place of the above. 



Ibid. (p. 280). 



Schizoporella subsinuata, sp. n. 



When I described this species I had not met with specimens 

 of it bearing avicularia ; but they have since occurred, and 

 instead of the clause in the diagnosis " Avicularia none," the 



• ' Descriptions of new or littlo-known Polyzoa,' part ii. p 6, pi iii 

 fig. 18 (1882). 



11* 



