ON RECENT POLYZOA. 563 
Genus 61. Membraniporella (pars), Siitt. 
See Hincks, ‘ Brit. Mar. Polyzoa,’ p. 199. 
*Florid. Bryozoa,’ Smit, Part 11, p. 10. 
‘Zoarium incrusting, or rising into free, foliaceous expansions, with a 
single layer of cells (hemischaran) (?) Busk. Zocecia closed in front by 
“a number of flattened calcareous ribs more or less consolidated.’— Brit. 
Mar. Polyzoa, p. 199. 
oy 
1. Membraniporella nitida, Johnst., op. cit. pl. xxvii. figs. 1-8. 
. S melolontha, Busk, op. cit. pl. xxvii. figs. 9, 10. 
i Family XX. Microporellide. 
Microporellide (pars), Hincks, ‘ Brit. Mar. Pol,’ p. 204. 
This family as established by Mr. Hincks (‘ Brit. Mar. Bol.) 
embraced three genera :— 
Genus Microporella, Hincks. 
» Diporula, Hincks. 
», Chorizopora, Hincks. 
__In the ‘Challenger Report’ (p. 134) Mr. Busk has modified the 
definition of Mr. Hincks for the purpose of ‘limiting it to such Es- 
aarine forms as have a true lunate pore. Consequently, as here under- 
od, it corresponds with Professor Smitt’s genus Porrelina (‘‘ Florid. 
Bryoz.” p. 27 ).’ The genus Chorizopora, Hincks, is relegated to the 
next family, Escharide, and Diporula, Hincks, is not accounted for in 
the ‘Challenger Report.’ 
_ ‘Mouth semicircular 6r coarctate, with an entire straight lower 
border; a lunate fimbriated median pore. Zoarium erect and bilaminar, 
‘or crustaceous and adnate.’—Chal. Rep. p. 134. 
iM 
§ a. Hrect, bilaminar. 
Genus Flustramorpha, Cray. 
oan Ad RE vy 
§ B. Crustaceous. 
Genus Microporella, Hincks. 
§ a. Hrect, bilaminar. 
Genus 62. Flustramorpha, Gray 
= Mastigophora (pars), Hincks. (See p. 101.) 
_ ‘Zoarium erect, radicate, bilaminar, composed of irregular lobes, 
bordered and loosely interconnected by chitinous tubes; mouth coare- 
tate ; a lateral pouch-like vibracularium.’—Chal. Rep. p. 135. 
1. Flustramorpha marginata, Krauss (sp.), ‘ Chal. Rep.’ pl. xx. fig. 8, 
} ! woodcut, p. 155 
= Flustra marginata, Krauss 
= Flustramorpha marginata, Gray. 
2. ss hastigera, Busk, ‘Chal. Rep.’ pl. xxi. fig. 7 
woodcut, p. 136 
= (?) Porellina ciliata, Smitt. 
? 
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