ON RECENT POLYZOA. 509 
*Zocecia calcareous, decumbent, adherent, usually distant and con- 
nected by tubular prolongations. Branches given off from the sides of 
the zocecium. Orifice orbicular, sometimes produced and subtubular, 
_ with a sinus in the lower border.’—Challenger Report, p. 4. 
On account of this last character—the ‘sinus’ in the lower border— 
Mr. Hincks (* British Marine Polyzoa,’ p. 286) places Hippothoa in his 
family group Myrto0zoIp# in association with Schizoporella. Prof. Smitt 
‘disallows the genus and ranks its members with species which are 
supposed to possess similar zocecia, irrespective of the habit of growth’ 
(op. cit. p. 287). 
1. Hippothoa divaricata, Lame., Hincks, ‘British Marine Polyzoa,’ 
5 . 288. 
rsa thik divaricata, var. a, conferta, Hincks, p. 288. 
" ie 5 /, carinata, Norman, p. 289. 
# » Y, Patagonica, Busk. 
2. expansa, Dawson (Hincks, p. 291). 
3. y flagellum, Manzoni (Hincks, p. 293). 
4. a distans, Macgillivray (Hincks, ‘ Polyzoa,’ Queen Char- 
lotte Island Annals, June 1883. 
Only two species of Hippothoa are described by Mr. Busi in the ‘ Chal- 
lenger’ Report, H. divaricata and H. flagellum, Manzoni. The first at 
Station 135 in from 60 to 1,000 fathoms, and the other at Station 151, 
off Heard Island, in 75 fathoms. The H. ewpansa, Dawson, is a northern 
species, and the British species are cosmopolitan in their geographical 
distribution. 
Genus 4. Pasythea, Lamouroua 
= CeLaria (sp.), Solander. = Liriozoa, Lamk. = Eptcauuipium, Hincks. 
In the ‘Ann. Mag. Nat. Hist.’ Feb. 1881, p. 156, Mr. Hincks de- 
scribed as new under the generic and specific name of Hpicaulidium 
 pulchrum the Cellaria tulipifera of Solander. In his ‘ Challenger’ Report 
(pp. 8 and 5) Mr. Busk draws attention to this species when describing 
a new form previously referred to by Smitt in his ‘ Floridian Bryozoa.’ 
As Mr. Hincks’s genus is replaced by the older name, I have thought it 
best to retain his generic description intact, especially so as Mr. Busk’s 
diagnosis differs from that of Mr. Hincks. 
‘“Zoarum calcareous, composed of a creeping base and erect stems, 
_ made up of internodes linked together at their extremities by corneous 
joints, on which the zoccia are borne in companies. Zocecia erect, 
_ ¢lavate, with a small oblique subterminal orifice, several united together: 
longitudinally, so as to form a cluster; the clusters opposite free, except 
at the base, where they are attached by corneous joints to the internodes.’ 
—Hincks, op. cit. p. 157. 
In a corrigendum, ‘Ann. Mag. Nat. Hist.’ Aug. 1881, p. 135, Mr. 
‘Hincks says that the above species was figured and described by Ellis. 
(edited by Solander) under the name of Cellaria tulipifera; Lamouroux 
referred it to his genus Pasythea; De Blainville and Lamarck gave its. 
generic rank—one as Tuliparia, Blainv., the other as Liriozoa, Lamk. 
1. Pasythea tulipifera, Solander, Lame. = Errcavnipiom PuLcHRUM, 
Hincks, 
2. Pasythea eburnea, Smitt (Florid. Bryoz., Busk) = GEMELLipora 
EBURNEA, Sinitt. 
