ON RECENT POLYZOA. 555 
Genus Onchopora, Busk. 
»,  Onchoporella, Busk. 
Genus 55. Onchopora, Bush 
= Carbasea (pars), Busk 
= Malakosaria, Goldstein. 
‘Zoarium dichotomously branched, cylindrical, quadriserial.’—Chal. 
Rep., p. 103. 
Onchopora Sinclairii, Busk, ‘Chal. Rep.’ pl. x. fig. 4; ‘Quart. Jour. 
Mic. Soe.’ vol. v. p. 172 
= Malakosaria pholaramphos, Goldst., ‘Proc. Roy. Soc. 
Vict.’ June 1881, p. 5, pl. ii. fig. 1. 
Genus 56. Onchoporella, Busk 
= Carbasea (pars), Busk ; Scruparia (pars), Busk. 
‘Zoarium foliaceous, unilaminar, ligulate, or lobed.-—Chal. Rep., 
p. 103. 
1. Onchoporella bombicina, Busk, ‘Brit. Mus. Cat.’; ‘Chal. Rep.’ 
104 
= Flustra bombycinna, Linn., Bosc., Lamz. 
= Semiflustra bombycina, Lamk., D’Orb. 
? Lepralia diadema, Macgil. 
2, ey diaphana, Busk, ‘Quart. Jour. Mic. Soe.’ vol. viii- 
p- 28], pl. xxxi. fig. 1 
= Seruparia, id., Busk, ‘ Chal. Rep.’ p. 104 (note). 
Family XVIII. Reteporide, Smitt 
= Reteporide, Smitt, 1867 ; Hincks, 1879. 
Escharide (pars), D’Orb, 1851; Hincks, 1880; Smitt, 1872; ‘ Brit. 
Maus. Cat.’ 1852, Busk, ‘Crag Polyzoa,’ 1859 ; Macgillivray, &c. 
*Zoarium calcareous, erect, fixed; foliaceons and fenestrate, uni- 
laminar, or reticulately or freely ramose in one plane. Zocecia secund.” 
—Chal. Rep., p. 104. 
1, Genus Retepora, Imperato, 4 sections. 
2. ,,  Reteporella, Busk (sub-genus, Bush). 
3. ,, Turritigera, Busk. 
Genus 57. Retepora, Imperato 
= Retepora (pars), Lamz., Blainv. ‘ Brit. Mus. Cat.’ 
Eschara (pars), Smitt; Millepora (pars), Linn., Pallas., 
Ellis. 
_ ‘Zoarium reticulate, formed of flexuose, anastomosing branches, or 
fenestrate; erect, springing with a calcareous stem, rarely from an 
incrusting or spreading base. Zocecia disposed on one aspect only, 
usually deeply immersed, except on the sides of the branches or trabecule. 
_ paper (‘Cheilostomatous Bryozoa’ from Aldinga, &c. Quart. Jour. Geol. Soc. Aug. 
_ 1885) has come to hand. I find that he takes exception to, and freely criticises Mr. 
_ Busk’s arrangement in his prefatory remarks. I think it will be better to refer the 
Student to the paper itself, rather than point out all the moot-points raised by 
Mr. Waters. 
