General History of the Marine Polyzoa. 143 
‘Annals,’ October 1884 (p. 276). 
Menipea marginata, sp. n. 
This species must be referred to Caberea rudis 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 Caderea. 
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 sete 
were observed. My specimens show that the vibracular 
zooids are liable to be very 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 zocecia. 
” 
Ibid. (p. 279). 
CYCLICOPORA, gen. nov. 
Cyclicopora prelonga, 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 little-known Polyzoa,’ part ii. p. 6, pl. iii. 
fig. 18 (1882). 
i? 
