ON RECENT POLYZOA. 517 
’ 
_ ‘Zocecia in conjoined pairs or triplets in each internode (not opposite), 
much expanded above and contracted below. Upper part of front 
occupied by a wide sub-triangular bordered area, partially filled in by a 
: ular lamina, and with a sub-orbicular membranous aperture. A 
~ Iateral sessile avicularium placed below the level of the aperture.’— Busk, 
*Chal. Rep.’ p. 22. 
In his ‘ British Marine Polyzoa’ Mr. Hincks disallows the genus 
mma, and he places the name among the synomyms of the genus 
Menipea. Notwithstanding this, Mr. Busk restores the only species in 
the ‘ Challenger ’ material to its old place, as— 
Emma crystallina, Gray, ‘Chal. Rep.’ p. 23 
= KE. crystallina, Busk, ‘ Brit. Mus. Cat.’ 
Genus 12. Scrupocellaria, Van Beneden 
= Canda, sp., Busk = Bicellaria, sp., Blainv. 
Cellularia, Waters, ‘Bay of Nap. Bry.’ 
‘Zoarium jointed. Zocecia numerous in each internode, rhomboid ; 
aperture with or without an operculum; a sessile avicularium placed 
laterally at the upper and outer angle, and a vibraculum in a bend or 
‘sinus on the lower part of the dorsal surface ; frequently an avicularium 
on the front of the cell.’—Hincks, ‘ Brit. Mar. Pol.’ p. 43. 
_ As species of Scrupocellaria range backward in time from the present 
“seas to the Miocene of Austria~Hungarian deposits, it is not surprising 
that many synonyms must necessarily fall under a few of the well- 
marked specific forms. Mr. Hincks has been exceptionally careful in 
his diagnosis of the five British forms, as the student will be pleased to 
“find when working up the forms which are widely and generally dis- 
_ tributed round our coast. Mr. Waters extends the area of three British 
Species in his ‘ Bry. Bay of Naples.’ 
o 
ay a. Without an operculum. 
4 1. Serupocellaria scruposa, Hincks, pl. vii. figs. 8-10. 
bg 2. +3 elliptica, Reuss, Hincks, pl. vi. figs. 5, 6 
q = 8. inermis, Norman, 
zz (8. With an operculum. 
a 
i 3. . scabra, Van Ben., Hincks, pl. vi. figs. 7-11. 
4. i scrupea, Busk, Hincks, p. vu. figs. 11-14. 
mm. os § reptans, Linn., Hincks, pl. yii. figs. 1-7. 
“* 
v 
These are the whole of the British species given by Mr. Hincks. Mr. 
A. W. Waters, in his ‘Bay of Naples Bryozoa,’ gives as Oellularia 
48. reptans, S. scruposa, and S. scrupea. 
bs In his ‘ Challenger Report,’ Mr. Busk describes five species :— 
___ 5. Scrupocellaria Macandrei, Busk, ‘Chal. Rep.’ pl. xi. fig. 4 
= §. Macandrei, Busk, ‘ Brit. Mus. Cat.’ 
i. he ciliata, Aud., ‘ Chal. Rep.’ pl. xi. fig. 5 
= S. diadema, Busk, ‘ Brit. Mus. Cat.’ 
8. se ornithorhyncus, Wyv. Thoms. ‘Chal. Rep.’ pl. vi. 
fio. 6 
= ?S. clypeata, Haswell, 
