ON RECENT POLYZOA. SSL 
_. here is something very peculiar abont the zocecia of F. Barleeti. 
The cells are large and rectangular, with an unarmed margin, avicularia 
‘oblique. Ovicells in the dry specimens immersed. This is caused by 
the top wall of the zoccium, to which the ovicell is attached, being 
lower than the side walls which support the roofing. The localities 
of the species are Shetland, in aboat 50 fathoms; entrance to the 
Bémmelfjord, in 106 fathoms (Kirchenpauer). 
In his ‘ Contributions’ Mr. Hincks describes other species of Flustra. 
6. Flustra dentigera, Hincks, Australia, ‘Annals,’ Feb. 1882, pl. v. fig. 7. 
‘e reticulum, Hincks, - 
Flustra dissimilis, Busk, Bass’s Straits. 
8: »  solida, Stimpson. See Note on Hincks’s Pol. Barrent’s Sea, 
‘Annals,’ Oct. 1880, p, 282, pl. xv. figs. 2, 3. 
The following species is a peculiarly northern form, but Mr. Hincks 
gives it in his Report in the ‘ Poly. Queen Charlotte Is.’ 
” 
9. Flustra membranaceo-truncata, Smitt. 
Virago Sound, North Sea, and Arctic Seas common. 
In the ‘Challenger Report’ Mr. Busk describes four species of Flustra, 
three of which are new; seven species of Carbasea, two of which are 
mew ; and five species of Diachoris. 
§ A. Zocecia contiguous. 
§$ a. Utrinque porose, Linn. 
Genus 29. Flustra, Linn. 
‘Zocecia disposed in two inseparable layers (except when decurrent).’ 
—Busk, ‘ Chal. Rep.’ p. 53. 
1. Flustra crassa, Busk, ‘Chal. Rep.’ pl. xvi. fig. 6. 
Remarkable, says Mr. Busk, for its thick, almost fleshy 
consistence. 
The species is only recorded from one station, 149a. 
Kerguelen Island, 28 fath. 
2. »  denticulata, Busk, ‘ Chal Rep.’ pl. xxxii. fig. 2 
= F. denticulata, var. inermis, Busk, ‘Brit. Mus. Cat.’ 
3. »  biseriata, Busk, ‘Chal. Rep.’ pl. xvi. fig. 1. 
4. » membraniporides, Busk, ‘Chal. Rep.’ p. xxxii. fig. 7. 
Genus 30. Carbasea, Gray. 
*Zocecia in a single layer. Front either completely or partially mem- 
‘ranous.’—Chal. Rep., p. 55. 
1. Carbasea ovoidea, Busk, ‘Chal. Rep.’ pl. xvi. fig. 3, and ‘ Brit. 
y Mas. Cat.’ p. 52, &c. 
2. e dissimilis, Bk., ‘ Chal. Rep.’ p. 55 
' = C. dissimilis, Bk., ‘ Brit. Mus. Cat.’ p. 51 
= Flustra carbasea, var. 3, Lamk. 
3. A elegans, Bk., ‘ Chal. Rep.’ pl. xvi. fig. 5, and ‘ Brit. Mus. 
: Cat.’ p. 53. 
~ pedunculata, Bk., ‘Chal. Rep.’ pl. xvi. fig. 4. 
ie 5. »  Moseleyi, Bk., ‘Chal. Rep.’ pl, xxxiii. fig. 4. Specimen 
: showing the polypides. 
MM 2 
